Sealed Spherical Roller Bearing Manufacturer

Sealed spherical roller bearings, as an upgrade of spherical roller bearing technology, more and more manufacturers have begun to produce Sealed Spherical Roller Bearing and have been recognized by the market,

SKF– Exceptional protection and longer life – with sealed SKF Explorer spherical roller bearings

FAG– FAG Sealed Spherical Roller Bearings With reliable protection against contamination

NSK– Long life sealed spherical roller bearings for Conveyor pulley in Mining industry

NTN–Sealed Spherical Roller Bearings

ULTAGE Series Sealed Spherical Roller Bearings (WA Type) are new innovative standard products specifically developed to provide “longer service life”, “higher reliability” and “improved ease of use” required for all industrial machineries.ZKL-NEW FORCE Sealed Spherical Roller Bearings

ZKL–  has developed its first types of Sealed spherical roller bearings. In the current year the range of sealed spherical roller bearings will be extended and the customers will be able to choose the bearings from our new catalogue „ZKL Sealed spherical roller bearings“, which will come out in May this year.

EASIER, ZWZ, TIMKEN, COATMASTER, Sealed spherical roller bearings offer long-life performance, are highly reliable,and promote a clean working environment.

Sealed spherical roller bearing, includes an inner ring and an outer ring, a cage is arranged between the inner ring and the outer ring, and rollers are arranged on both sides of the cage between the inner ring and the outer ring, which is characterized by the inner ring There are end caps for sealing the inner end of the bearing on both sides of the outer ring. The sealed end cover can effectively protect the internal structure of the bearing from external aggressions, prolong the service life of the bearing, and enable the bearing to run for a long time under complex environmental conditions such as high temperature, high pressure, and heavy load.

Special Grease: Heat And pressure resistance are ensured using a special long-life grease

Special Seal:Sealing performance is enhanced by adopting an outward-extending, spring loaded lip seal made of nitrile rubber and is beaded on the outer circumference, which sectures the seal to prevent dislodging.

Symmetric Rollers:Roller and raceway surface areas are designed to prevent edge loading at the contact points under high-load operating conditions.

Special Chamfer: the chamfer configuration of the outer-ring outer bore offers smooth axial movement of the bearing at the free end.

 

Spherical roller bearings are universally applicable to various machines. The ordinary roller bearing generally includes an inner ring and an outer ring. A cage is arranged between the inner ring and the outer ring. Both sides of the cage are evenly distributed with axial pockets, and the pockets on both sides of the cage are arranged in a cross shape. There are rollers in each pocket, and the rollers are drum-shaped spherical rollers. The inner surface of the outer ring and the corresponding inner ring raceway of the roller are both spherical. A circumferential boss is processed in the middle of the inner surface of the cage, and the inner surface of the circumferential boss and the inner surface of the inner ring are in a contact-like sliding fit, and the inner ring guides the movement of the cage.

However, because spherical rollers are generally used in harsh working conditions, if this ordinary spherical roller bearing is directly installed in the above environment, the inside of the bearing is easily contaminated, which greatly reduces the life of the bearing and affects the equipment. Normal operation.

Sealed spherical roller bearings can be widely used in places with relatively harsh environments, such as steel metallurgy, mining, petrochemicals, papermaking, cement manufacturing and other engineering machinery fields. Sealed end covers are provided to effectively protect The internal structure of the bearing is protected from external aggressions, which prolongs the service life of the bearing and enables the bearing to run for a long time under complicated environmental conditions such as high temperature, high pressure and heavy load.

 

Designation  (Bore diameter 20mm-45mm) Principal dimensions Basic load ratings Speed ratings
EASIER FAG NSK dynamic static Reference speed Limiting speed
d[mm] D[mm] B [mm] C[kN] C0[kN] [r/min] [r/min]
BS2-2205-2RS/VT143 WS22205-E1-XL-2RSR 25 52 23 49.9 44 6 100
BS2-2206-2RS/VT143 WS22206-E1-XL-2RSR 30 62 25 66.1 60 5 100
BS2-2207-2RS/VT143 WS22207-E1-XL-2RSR 35 72 28 88.8 85 4 300
BS2-2208-2RS/VT143 WS22208-E1-XL-2RSR 40 80 28 98.5 90 3 900
BS2-2208-2RSK/VT143 WS22208-E1-XL-K-2RSR 40 80 28 98.5 90 3 900
BS2-2308-2RS/VT143 WS22308-E1-XL-2RSR 40 90 38 155 140 3 900
BS2-2209-2RS/VT143 WS22209-E1-XL-2RSR 45 85 28 104 98 3 500
BS2-2209-2RSK/VT143 WS22209-E1-XL-K-2RSR 45 85 28 104 98 3 500
BS2-2309-2RS/VT143 WS22309-E1-XL-2RSR 45 100 42 190 183 3 400
BS2-2210-2RS/VT143 WS22210-E1-XL-2RSR 50 90 28 107 108 3 200
BS2-2210-2RSK/VT143 WS22210-E1-XL-K-2RSR 50 90 28 107 108 3 200
BS2-2310-2RS/VT143 WS22310-E1-XL-2RSR 50 110 45 228 224 3 000
BS2-2211-2RS/VT143 WS22211-E1-XL-2RSR 55 100 31 129 127 2 900
BS2-2211-2RSK/VT143 WS22211-E1-XL-K-2RSR 55 100 31 129 127 2 900
BS2-2311-2RS/VT143 WS22311-E1-XL-2RSR 55 120 49 280 280 2 800
BS2-2212-2RS/VT143 WS22212-E1-XL-2RSR 60 110 34 159 166 2 700
BS2-2212-2RSK/VT143 WS22212-E1-XL-K-2RSR 60 110 34 159 166 2 700
BS2-2312-2RS/VT143 WS22312-E1-XL-2RSR 60 130 53 325 335 2 500
24013-2RS5W/VT143 65 100 35 137 173 2 600
BS2-2213-2RS/VT143 WS22213-E1-XL-2RSR 65 120 38 198 216 2 400
BS2-2213-2RSK/VT143 WS22213-E1-XL-K-2RSR 65 120 38 198 216 2 400
BS2-2313-2RS/VT143 WS22313-E1-XL-2RSR 65 140 56 357 360 2 400
BS2-2214-2RS/VT143 WS22214-E1-XL-2RSR 70 125 38 213 228 2 300
BS2-2214-2RSK/VT143 WS22214-E1-XL-K-2RSR 70 125 38 213 228 2 300
BS2-2314-2RS/VT143 WS22314-E1-XL-2RSR 70 150 60 413 430 2 100
24015-2RS5/VT143 75 115 40 181 232 2 300
BS2-2215-2RS/VT143 WS22215-E1-XL-2RSR 75 130 38 217 240 2 200
BS2-2215-2RSK/VT143 WS22215-E1-XL-K-2RSR 75 130 38 217 240 2 200
BS2-2315-2RS/VT143 WS22315-E1-XL-2RSR 75 160 64 462 475 2 100
BS2-2315-2RSK/VT143 WS22315-E1-XL-K-2RSR 75 160 64 462 475 2 100
BS2-2216-2RS/VT143 WS22216-E1-XL-2RSR 80 140 40 243 270 2 000
BS2-2216-2RSK/VT143 WS22216-E1-XL-K-2RSR 80 140 40 243 270 2 000
BS2-2316-2RS/VT143 WS22316-E1-XL-2RSR 80 170 67 516 530 2 000
BS2-2316-2RSK/VT143 WS22316-E1-XL-K-2RSR 80 170 67 516 530 2 000
BS2-2217-2RS/VT143 WS22217-E1-XL-2RSR 85 150 44 291 325 1 900
Designation (Bore diameter 85mm-95mm) Principal dimensions Basic load ratings Speed ratings
EASIER FAG NSK dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min] [r/min]
BS2-2217-2RSK/VT143 WS22217-E1-XL-K-2RSR 85 150 44 291 325 1 900
BS2-2218-2RS/VT143 WS22218-E1-XL-2RSR 90 160 48 331 375 1 800
BS2-2218-2RSK/VT143 WS22218-E1-XL-K-2RSR 90 160 48 331 375 1 800
BS2-2318-2RS5/VT143 WS22318-E1-XL-2RSR 90 190 73 637 695 1 700
BS2-2318-2RS5K/VT143 WS22318-E1-XL-K-2RSR 90 190 73 637 695 1 700
BS2-2219-2RS/VT143 WS22219-E1-XL-2RSR 95 170 51 393 450 1 700
24020-2RS5/VT143 100 150 50 296 415 1 700
24120-2RS5/VT143 100 165 65 470 640 1 700
BS2-2220-2RS5/VT143 WS22220-E1-XL-2RSR 100 180 55 433 490 1 600
BS2-2220-2RS5K/VT143 WS22220-E1-XL-K-2RSR 100 180 55 433 490 1 600
23220-2RS/VT143 100 180 60.3 499 600 1 600
23220-2RS5/VT143 100 180 60.3 499 600 1 600
BS2-2320-2CS5/VT143 WS22320-E1-XL-2RSR 100 215 82 847 950 600
BS2-2320-2CS5K/VT143 WS22320-E1-XL-K-2RSR 100 215 82 847 950 600
23022-2RS/VT143 110 170 45 326 440 1 500
24022-2RS5/VT143 110 170 60 438 620 1 600
23122-2CS5/VT143 110 180 56 451 585 800
23122-2CS5K/VT143 110 180 56 451 585 800
24122-2CS5/VT143 24122-BE-XL-2VSR 110 180 69 540 750 630
BS2-2222-2RS5/VT143 WS22222-E1-XL-2RSR 110 200 63 572 640 1 500
BS2-2222-2RS5K/VT143 WS22222-E1-XL-K-2RSR 110 200 63 572 640 1 500
23222-2CS5/VT143 110 200 69.8 627 765 640
23222-2CS5K/VT143 110 200 69.8 627 765 640
23024-2RS5/VT143 120 180 46 367 500 1 400
24024-2CS5/VT143 24024-BE-XL-2VSR 120 180 60 457 670 670
Designation (Bore diameter 120mm-130mm) Principal dimensions Basic load ratings Speed ratings
EASIER FAG NSK dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min] [r/min]
23124-2CS5/VT143 120 200 62 535 695 720
24124-2CS5/VT143 24124-BE-XL-2VSR 120 200 80 680 950 560
BS2-2224-2RS5/VT143 WS22224-E1-XL-2RSR 120 215 69 652 765 1 400
BS2-2224-2RS5K/VT143 WS22224-E1-XL-K-2RSR 120 215 69 652 765 1 400
23224-2CS5/VT143 120 215 76 734 930 600
23224-2CS5K/VT143 120 215 76 734 930 600
22324-2CS5/VT143 120 260 86 1 022 1 120 600
22324-2CS5K/VT143 120 260 86 1 022 1 120 600
23026-2CS5/VT143 130 200 52 452 610 800
23026-2CS5K/VT143 130 200 52 452 610 800
24026-2CS5/VT143 24026-BE-XL-2VSR 130 200 69 570 830 600
Designation (Bore diameter 130mm-140mm) Principal dimensions Basic load ratings Speed ratings
EASIER FAG NSK dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min] [r/min]
24126-2CS5/VT143 24126-BE-XL-2VSR 130 210 80 701 1 000 530
229750 J/C3R505 130 220 73 640 930 1 600 2 400
BS2-2226-2CS5/VT143 WS22226-E1-XL-2RSR 130 230 75 758 930 700
BS2-2226-2CS5K/VT143 WS22226-E1-XL-K-2RSR 130 230 75 758 930 700
23226-2CS5/VT143 130 230 80 828 1 060 530
23226-2CS5K/VT143 130 230 80 828 1 060 530
22326-2CS5/VT143 130 280 93 1 178 1 320 500
22326-2CS5K/VT143 130 280 93 1 178 1 320 500
23028-2CS5/VT143 140 210 53 485 680 700
23028-2CS5K/VT143 140 210 53 485 680 700
24028-2CS5/VT143 24028-BE-XL-2VSR 140 210 69 601 900 560
Designation (Bore diameter 140mm-150mm) Principal dimensions Basic load ratings Speed ratings
EASIER FAG NSK dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min] [r/min]
24128-2CS5/VT143 24128-BE-XL-2VSR 140 225 85 797 1 160 450
24128-2CS5K30/VT143 24128-BE-XL-K-2VSR 140 225 85 797 1 160 450
22228-2CS5/VT143 22228-E1A-XL-2RSR-M 140 250 68 744 900 670
22228-2CS5K/VT143 22228-E1A-XL-K-2RSR-M 140 250 68 744 900 670
23228-2CS5/VT143 140 250 88 963 1 250 480
23228-2CS5K/VT143 140 250 88 963 1 250 480
22328-2CS5/VT143 140 300 102 1 359 1 560 430
22328-2CS5K/VT143 140 300 102 1 359 1 560 430
23030-2CS5/VT143 150 225 56 532 750 670
23030-2CS5K/VT143 150 225 56 532 750 670
24030-2CS5/VT143 24030-BE-XL-2VSR 150 225 75 681 1 040 530
23130-2CS5/VT143 150 250 80 884 1 200 560
23130-2CS5K/VT143 150 250 80 884 1 200 560

Electrically Insulated cylindrical roller bearings

Electrically Insulated cylindrical roller bearings have outer ring coating, inner ring coating and ceramic material rolling elements. Because of the higher cost of using ceramic material rolling elements, in most cases, the inner ring or outer ring 50-200 μm is used. Thick ceramic coating. The first two coatings are plasma spraying method to coat ceramic material on the bearing surface. This coating still maintains its insulation performance in a humid environment. The ceramic material rolling element insulated bearing is the rolling element. Using ceramic materials, it has excellent current resistance capability.

These three methods can make the cylindrical roller bearing achieve the effect of insulation, so that the bearing will not be damaged by current during operation, and it can resist the electric flashover generated under 1000V voltage. The thicker coating can resist the high voltage above 1000V. Discharge.

Electrically insulated bearings can avoid damage caused by electrical corrosion, so compared with ordinary bearings, they can be used in motors to ensure more reliable operation. Compared with other insulation methods, such as shaft or housing insulation, it is more cost-effective and reliable. The outer dimensions and basic technical characteristics of insulated bearings are the same as those of non-insulated bearings, so they can be 100% interchanged.

 

 

Normally Cylindrical roller bearings are available in a wide range of designs, series, variants and sizes. The main design differences are the number of roller rows and the inner/outer ring flanges as well as cage designs and materials.

Cylindrical Roller Bearings And insulated Cylindrical roller bearings also have many different design as follows

–Single Row Cylindrical Roller Bearings

–Double Row Cylindrical Roller Bearings

–High Capacity Cylindrical Roller Bearings

–Single Row Full Complement Cylindrical Roller Bearings

–Double Row Full Complement Cylindrical Roller Bearings

 

Designation Principal dimensions Basic load ratings Fatique load limit Speed ratings Weight
Cylindrical roller bearings mm mm mm dynamic static Reference speed Limiting speed kg
d D B C[kN] C0[kN] [r/min] [r/min]
NU 1010 ECP/C3VL0241 50 80 16 46.8 56 6.7 9500 9500 0.27
NU 210 ECM/C3VL0241 50 90 20 73.5 69.5 8.8 8500 9000 0.48
NU 310 ECM/C3VL0241 50 110 27 127 112 15 6700 8000 1.36
NU 1011 ECP/C3VL0241 55 90 18 57.2 69.5 8.3 8500 8500 0.4
NU 1011 ECML/C3VL0241 55 90 18 57.2 69.5 8.3 8500 13000 0.4
NU 211 ECM/C3VL0241 55 100 21 96.5 95 12.2 7500 8000 0.78
NU 311 ECM/C3VL0241 55 120 29 156 143 18.6 6000 7000 1.75
NU 1012 ML/C3VL0241 60 95 18 37.4 44 5.3 8000 13000 0.48
NU 1012 ECP/C3VL0241 60 95 18 58.3 73.5 8.8 8000 8000 0.48
NU 212 ECM/C3VL0241 60 110 22 108 102 13.4 6700 7500 0.1
NU 312 ECM/C3VL0241 60 130 31 173 160 21.2 5600 6700 2.2
NU 1013 ECP/C3VL0241 65 100 18 62.7 81.5 9.8 7500 7500 0.45
NU 213 ECM/C3VL0241 65 120 23 122 118 15.6 6300 6700 1.3
NU 313 ECM/C3VL0241 65 140 33 212 196 25.5 5300 6000 2.63
NU 1014 ECM/C3VL0241 70 110 20 76.5 93 12 7000 7000 0.7
NU 1014 ECP/C3VL0241 70 110 20 76.5 93 12 7000 7000 0.7
NU 214 ECM/C3VL0241 70 125 24 137 137 18 6000 6300 1.4
NU 314 ECM/C3VL0241 70 150 35 236 228 29 4800 5600 3.2
NU 1015 M/C3VL0241 75 115 20 58.3 71 8.5 6700 6700 0.75
NU 215 ECM/C3VL0241 75 130 25 150 156 20.4 5600 6000 1.5
NU 315 ECM/C3VL0241 75 160 37 280 265 33.5 4500 5300 4
NU 315 ECP/VL0241 75 160 37 280 265 33.5 4500 5300 4
NU 1016 ECM/C3VL0241 80 125 22 99 127 16.3 6000 6000 1.05
NU 216 ECM/C3VL0241 80 140 26 160 166 21.2 5300 5600 1.9
NU 316 ECM/C3VL0241 80 170 39 300 290 36 4300 5000 4.6
NU 1017 M/C3VL0241 85 130 22 68.2 86.5 10.8 6000 6000 1.1
NU 217 ECM/C3VL0241 85 150 28 190 200 25 4800 5300 2.3
NU 317 ECM/C3VL0241 85 180 41 340 335 41.5 4000 4800 5.4
NU 1018 M/C3VL0241 90 140 24 80.9 104 12.7 5600 5600 1.4
NU 218 ECM/C3VL0241 90 160 30 208 220 27 4500 5000 2.8
NU 318 ECM/C3VL0241 90 190 43 365 360 43 3800 4500 6.3
NU 1019 ML/C3VL0241 95 145 24 84.2 110 13.2 5300 5300 1.4
NU 219 ECM/C3VL0241 95 170 32 255 265 32.5 4300 4800 2.9
NU 319 ECM/C3VL0241 95 200 45 390 390 46.5 3600 4300 7.3
NU 1020 M/C3VL0241 100 150 24 85.8 114 13.7 5000 5000 1.5
NU 220 ECM/C3VL0241 100 180 34 285 305 36.5 4000 4500 4.05
NU 320 ECM/C3VL0241 100 215 47 450 440 51 3200 3800 8.7
NU 1022 M/C3VL0241 110 170 28 128 166 19.3 4500 4500 2.3
NU 222 ECM/C3VL0241 110 200 38 335 365 42.5 3600 4000 5.7
NU 322 ECM/C3VL0241 110 240 50 530 540 61 3000 3400 12
NU 1024 M/C3VL2071 120 180 28 134 183 20.8 4000 4000 2.7
NU 224 ECM/C3VL0241 120 215 40 390 430 49 3400 3600 6.7
NU 324 ECM/C3VL0241 120 260 55 610 620 69.5 2800 3200 14.9
NU 1026 M/C3VL2071 130 200 33 165 224 25 3800 3800 3.9
NU 226 ECM/C3VL2071 130 230 40 415 455 51 3200 3400 7.7
NU 326 ECM/C3VL2071 130 280 58 720 750 81.5 2400 3000 18.5
NU 1028 M/C3VL2071 140 210 33 172 245 27 3600 3600 4.1
NU 228 ECM/C3VL2071 140 250 42 450 510 57 2800 3200 9
NU 328 ECM/C3VL2071 140 300 62 780 830 88 2400 2800 25.5
NU 1030 M/C3VL2071 150 225 35 194 275 30 3200 3200 5
NU 230 ECM/C3VL2071 150 270 45 510 600 64 2600 2800 12
NU 330 ECM/C3VL2071 150 320 65 900 965 100 2200 2600 31.5

 

Single row cylindrical roller bearings have NU, NJ, NUP, N, RNU type, as well as the complete single row cylindrical roller bearings, cylindrical roller bearing without outer ring etc. Cylindrical roller bearings are also available in sealed or split designs. In sealed bearings, the rollers are protected from contaminants, water and dust, while providing lubricant retention and contaminant exclusion. This provides lower friction and longer service life. Split bearings are intended primarily for bearing arrangements which are difficult to access, such as crank shafts, where they simplify maintenance and replacements. 

And different types of cylindrical roller bearings also have their different design according to their feather, and also many kinds of cages, just like Brass cage, Pressed Steel cage, nylon cage etc.

So insulated cylindrical roller bearings also have above mentioned characteristic with normal cylindrical roller bearings.The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life. 

Cylindrical roller bearings with up to three times longer service life than the previous CoatMaster (China Bearing manufacturer, Top Quality standard), which is superior to all other conventional cylindrical roller bearings. The performance improvements of CoatMaster (China cylindrical roller bearings) over the past 15 years have permitted downsizing, whilst still maintaining the required performance.

How to install insulated bearing correctly?

Insulated bearing

The correct installation of the bearing is related to the service life of the bearing, especially for insulated bearings, super-precision bearings, angular contact ball bearings, spindle bearings, high-speed bearings, etc. Improper installation may cause the bearing to be scrapped, so correct installation and scientific installation Is a very important process

1.Use special tools for bearing installation and disassembly

Advanced installation tools can avoid insulated bearing damage caused by improper tools and operations during installation. For example, when installing the bearing, the staff used the copper rod knock-in method, which is easy to cause uneven axial force of the bearing, causing deformation of the cage, damage to the rolling elements, and larger clearance, and the copper rod is in the process of knocking. The copper powder flies into the bearing cage, which is easy to cause bearing failure. Therefore, professional bearing removal tools must be used.

2. Do the bearing inspection work before installation

Before installing an insulated bearing, check the package for completeness. If it is damaged, carefully check whether the insulation layer of the bearing is damaged. If this type of bearing is damaged, its insulation capacity is greatly reduced, and it is easy to be corroded by current and lose its insulation. The effect of the bearing is intact, you can proceed to the next step

3. Check the matching size of the insulated bearing and the rotor shaft

When assembling the motor, it is necessary to carefully check the matching size of the bearing and the rotor shaft when the bearing is installed, and the matching size of the bearing outer ring and the end cover hole.

4. Control the amount of oil in the bearing and the bearing housing

Too much oil in the bearing and the box will cause the rolling elements of the bearing to slip, causing the rolling friction to change from rolling friction to sliding friction, which will damage the rolling elements of the bearing. Due to the excessive amount of oil in the bearing, the free space in the bearing box is small, and the operating temperature of the bearing will be reduced. Rising, the lubricating grease density is reduced, the rolling element lubricating oil film becomes thin, the lubrication condition is poor, it is easy to cause abnormal bearing noise, surface slippage, and shorten the life of the bearing

5. Pay attention to ensure that the insulation function

For bearings with an insulation design on the outer ring, care must be taken to ensure that the insulation is intact. If the bearing insulation is damaged during installation, the thin oil film of the bearing will be broken down by the shaft voltage. After the oil film breaks down, not only will the lubrication conditions of the rolling elements be poor, but also the electric sparks generated will form electrical corrosion on the rolling elements of the bearing, causing the rolling elements The surface is not polished, which accelerates the wear of the bearing.

 

insulated bearing manufacturer

Choosing the right bearing for applications such as electric motors, which can be affected by stray electrical currents, is of the utmost importance. Electrical continuity can cause damage to raceways and rolling elements. This risk is greater in applications using frequency converters. Insulated ball bearings offer a cost-effective method of protection against electrical current. Insulated bearings from HQW Precision are ceramic coated with a very thin layer of up to 200μm to ensure insulation up to 2,000V. A 100 μm layer ensures insulation up to 1,000 V. The shaft and housing tolerances need not be adjusted compared to non-coated bearings because the ceramic layer thickness is considered in the design. Bearing Specifications:

■ Ceramic coating on inner or outer ring

■ Layer thickness optimised by special coating process

■ Performance characteristics (load/ speed) are unchanged Advantages:

■ High electrical resistance

■ Cost efficiency due to increased bearing life and reduced maintenance costs

■ No special housing or shaft tolerances necessary

 

E-mail: brandbearings@gmail.com

Skype:brandbearings

Whatsapp: 0086-13280450757

www.china-bearing-manufacturer.com

How many bearings are there on a hydraulic excavator?

A tracked hydraulic excavator requires about fifty bearings for its basic operation (travel and rotation).

Irrespective of its size and its use (earthwork, mining, demolition), it is made up of a crawler track chassis topped with a superstructure including the engine, hydraulic components (pump, motors, cylinders), the driving cab and the attachment (arm, boom, dipper, bucket).

hydraulic excavator bearings include: Crawler Excavator walking bearing, excavator slewing bearing, excavator needle roller bearing, excavator gearbox bearing, excavator walking motor bearing, excavator walking drive bearing, excavator spherical plain bearing, excavator slewing support bearing and English non-standard bearing used on excavator.

Travel

The two track sets are each driven by a planetary reducer using 2 angular contact ball bearings or tapered bearings – for supporting the reducer – and 14 needle roller bearings – for planet gears.

32 bearings are thus necessary so that the machine can move.

Swing

The superstructure pivots 360° thanks to a slewing ring of about 1.50 m diameter fixed on the straight truck chassis and a hydraulic motor or a planetary reducer. This includes 12 needle roller bearings for the planet gears and 2 spherical roller bearings for the shaft support.

14 bearings contribute to the swing of the superstructure.

Note that the plain bearings equip the various joints located on the boom, the dipper and the bucket.

Crawler Excavators Also have many kinds of design according to the special situations

— Standard Crawler Excavators

— Intelligent Machine Control

— Hybrid Crawler Excavators

— Short Tail Swing Crawler Excavators

— Demolition Crawler Excavators

— Super long Front Crawler Excavators

Quiet, safe and reliable. The environmentally friendly crawler excavators are also simple to operate and probably the most efficient around. It’s no wonder they’re among the top selling hydraulic excavators in the world.

Here, you can find a number of offers for your crawler excavators bearings. For information about the full range of excavator bearings offers, and to find a specific solution for your needs, please contact us.

SKF INSOCOAT bearings with electrically insulating coating

SKF INSOCOAT bearings with electrically insulating coating are the special design special used in Electric motor. This design have the same dimension with the normally bearings, same weight and same cage, but INSOCOAT bearing have the electrially insulating coating on the outer ring or inner ring. At the present, Some bearing manufacturer can supply this kind of electrially insulating bearings, SKF, FAG, NSK, NTN, NKE, CoatMaster, ZKL, GRW Bearing.

Electric motors, generators and associated equipment are at risk when an electric current passes through their bearings. This can damage the contact surfaces of rolling elements and raceways in the bearings (electrical erosion) and rapidly degrade the grease. An additional risk in electric motors and generators comes from high frequency currents caused by the inherent stray capacitance. The risk of damage increases where the application uses a frequency converter.

INSOCOAT bearings are designed to prevent electric current from passing through the bearing. The external surfaces of either their inner or outer ring are coated with an insulating aluminium oxide layer, by applying a sophisticated plasma-spray process for an outstanding quality finish. The solutions are very cost-effective compared with other insulation methods.

They must be robust enough to operate in electrical equipment with modern AC technology. The passage of electric current through rolling bearings can lead to damage in a relatively short period of time. Small craters caused by electric current passage which have been tolerated occasionally in the past are no longer acceptable. SKF, as a consequence, has developed the INSOCOAT bearing range. These bearings have special coated outer rings with an electrically-insulated layer for a breakdown voltage up to 1,000 V.

To ensure smooth, trouble-free operation, it is necessary to prevent the bearing from electric current passage. The contact areas between housing, outer ring, rolling elements, inner ring and shaft can act as electric contacts. The resulting arcs – characterised by very high temperatures similar to that produced by melting and welding processes – will damage rolling elements as well as raceways of bearing rings. Typical damage is characterised by craters and false brinelling.

Electrially Insulating Bearing have many kinds of design

— Insulated deep groove ball bearing
— Insulated cylindrical roller bearing
— Insulated tapered roller bearing
— Insulated spherical roller bearing
— Insulated angular contact ball bearing
— Insulated thrust roller bearing
— Insulated linear ball bearing

Bearing design

The insulating coating on the outer ring of the INSOCOAT bearing is made from aluminium oxide and applied using plasma spraying technology. SKF has carried out extensive research and development in this area and is pursuing further improvement of the process. The latest phase of the development is the ability to handle a 1,000V dielectric breakdown voltage.

Design characteristics of the bearing include:

  • ISO standard dimensions and tolerances
  • Interchangeability with non-insulated bearing types
  • Suitability for all common housing types
  • Dielectric breakdown voltage optional up to 500V or 1,000V.
  • Coating thickness of about 0.05 mm
  • Durability of coating
  • High thermal stability

Insulated Deep Groove Ball Bearing

Designation Principal dimensions Basic load ratings Fatique load limit Speed ratings
dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] Pu[kN] [r/min] [r/min]
6314/C3VL0241 70 150 35 111 68 2.75 9500 6300
6314 M/C3VL0241 70 150 35 111 68 2.75 9500 9000
6215/C3VL0241 75 130 25 68.9 49 2.04 10000 6700
6315/C3VL0241 75 160 37 119 76.5 3 9000 5600
6315 M/C3VL0241 75 160 37 119 76.5 3 9000 8000
6216/C3VL0241 80 140 26 72.8 55 2.2 9500 6000
6316/C3VL0241 80 170 39 130 86.5 3.25 8500 5300
6316 M/C3VL0241 80 170 39 130 86.5 3.25 8500 7500
6217/C3VL0241 85 150 28 87.1 64 2.5 9000 5600
6317/C3VL0241 85 180 41 140 96.5 3.55 8000 5000
6317 M/C3VL0241 85 180 41 140 96.5 3.55 8000 7500
6218/C3VL0241 90 160 30 101 73.5 2.8 8500 5300
6318/C3VL0241 90 190 43 151 108 3.8 7500 4800
6318 M/C3VL0241 90 190 43 151 108 3.8 7500 7000
6219/C3VL0241 95 170 32 114 81.5 3 8000 5000
6219 M/C3VL0241 95 170 32 114 81.5 3 8000 7500
6319/C3VL0241 95 200 45 159 118 4.15 7000 4500
6319 M/C3VL0241 95 200 45 159 118 4.15 7000 6300
6220/C3VL0241 100 180 34 127 93 3.35 7500 4800
6320/C3VL0241 100 215 47 182 140 4.75 6700 4300
6320 M/C3VL0241 100 215 47 182 140 4.75 6700 6000
6222/C3VL0241 110 200 38 151 118 4 6700 4300
6222 M/C3VL0241 110 200 38 151 118 4 6700 6300
6322/C3VL0241 110 240 50 216 180 5.7 6000 3800
6322 M/C3VL0241 110 240 50 216 180 5.7 6000 5300
6224/C3VL0241 120 215 40 153 118 3.9 6300 4000
6324/C3VL2071 120 260 55 216 186 5.7 5600 3400
6324 M/C3VL2071 120 260 55 216 186 5.7 5600 5000
6226/C3VL2071 130 230 40 163 132 4.15 5600 3600
6326/C3VL2071 130 280 58 242 216 6.3 5000 3200
6326 M/C3VL2071 130 280 58 242 216 6.3 5000 4500
6228/C3VL2071 140 250 42 174 150 4.55 5300 3400
6328/C3VL2071 140 300 62 265 245 7.1 4800 3000
6328 M/C3VL2071 140 300 62 265 245 7.1 4800 4300
6230/C3VL2071 150 270 45 186 166 4.9 5000 3200
6330/C3VL2071 150 320 65 286 285 7.8 4300 2800
6332 M/C3VL2071 160 340 68 291 285 7.65 4000 3800
6334 M/C3VL2071 170 360 72 332 340 8.8 3800 3400
6336 M/C3VL2071 180 380 75 371 405 10.4 3600 3200

 

Insulated Cylindrical Roller Bearing

Designation Principal dimensions Basic load ratings Fatique load limit Speed ratings
dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] Pu[kN] [r/min] [r/min]
NU 1010 ECP/C3VL0241 50 80 16 46.8 56 6.7 9500 9500
NU 210 ECM/C3VL0241 50 90 20 73.5 69.5 8.8 8500 9000
NU 310 ECM/C3VL0241 50 110 27 127 112 15 6700 8000
NU 1011 ECP/C3VL0241 55 90 18 57.2 69.5 8.3 8500 8500
NU 1011 ECML/C3VL0241 55 90 18 57.2 69.5 8.3 8500 13000
NU 211 ECM/C3VL0241 55 100 21 96.5 95 12.2 7500 8000
NU 311 ECM/C3VL0241 55 120 29 156 143 18.6 6000 7000
NU 1012 ML/C3VL0241 60 95 18 37.4 44 5.3 8000 13000
NU 1012 ECP/C3VL0241 60 95 18 58.3 73.5 8.8 8000 8000
NU 212 ECM/C3VL0241 60 110 22 108 102 13.4 6700 7500
NU 312 ECM/C3VL0241 60 130 31 173 160 21.2 5600 6700
NU 1013 ECP/C3VL0241 65 100 18 62.7 81.5 9.8 7500 7500
NU 213 ECM/C3VL0241 65 120 23 122 118 15.6 6300 6700
NU 313 ECM/C3VL0241 65 140 33 212 196 25.5 5300 6000
NU 1014 ECM/C3VL0241 70 110 20 76.5 93 12 7000 7000
NU 1014 ECP/C3VL0241 70 110 20 76.5 93 12 7000 7000
NU 214 ECM/C3VL0241 70 125 24 137 137 18 6000 6300
NU 314 ECM/C3VL0241 70 150 35 236 228 29 4800 5600
NU 1015 M/C3VL0241 75 115 20 58.3 71 8.5 6700 6700
NU 215 ECM/C3VL0241 75 130 25 150 156 20.4 5600 6000
NU 315 ECM/C3VL0241 75 160 37 280 265 33.5 4500 5300
NU 315 ECP/VL0241 75 160 37 280 265 33.5 4500 5300
NU 1016 ECM/C3VL0241 80 125 22 99 127 16.3 6000 6000
NU 216 ECM/C3VL0241 80 140 26 160 166 21.2 5300 5600
NU 316 ECM/C3VL0241 80 170 39 300 290 36 4300 5000
NU 1017 M/C3VL0241 85 130 22 68.2 86.5 10.8 6000 6000
NU 217 ECM/C3VL0241 85 150 28 190 200 25 4800 5300
NU 317 ECM/C3VL0241 85 180 41 340 335 41.5 4000 4800
NU 1018 M/C3VL0241 90 140 24 80.9 104 12.7 5600 5600
NU 218 ECM/C3VL0241 90 160 30 208 220 27 4500 5000
Designation Principal dimensions Basic load ratings Fatique load limit Speed ratings
dynamic static Reference speed Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] Pu[kN] [r/min] [r/min]
NU 318 ECM/C3VL0241 90 190 43 365 360 43 3800 4500
NU 1019 ML/C3VL0241 95 145 24 84.2 110 13.2 5300 5300
NU 219 ECM/C3VL0241 95 170 32 255 265 32.5 4300 4800
NU 319 ECM/C3VL0241 95 200 45 390 390 46.5 3600 4300
NU 1020 M/C3VL0241 100 150 24 85.8 114 13.7 5000 5000
NU 220 ECM/C3VL0241 100 180 34 285 305 36.5 4000 4500
NU 320 ECM/C3VL0241 100 215 47 450 440 51 3200 3800
NU 1022 M/C3VL0241 110 170 28 128 166 19.3 4500 4500
NU 222 ECM/C3VL0241 110 200 38 335 365 42.5 3600 4000
NU 322 ECM/C3VL0241 110 240 50 530 540 61 3000 3400
NU 1024 M/C3VL2071 120 180 28 134 183 20.8 4000 4000
NU 224 ECM/C3VL0241 120 215 40 390 430 49 3400 3600
NU 324 ECM/C3VL0241 120 260 55 610 620 69.5 2800 3200
NU 1026 M/C3VL2071 130 200 33 165 224 25 3800 3800
NU 226 ECM/C3VL2071 130 230 40 415 455 51 3200 3400
NU 326 ECM/C3VL2071 130 280 58 720 750 81.5 2400 3000
NU 1028 M/C3VL2071 140 210 33 172 245 27 3600 3600
NU 228 ECM/C3VL2071 140 250 42 450 510 57 2800 3200
NU 328 ECM/C3VL2071 140 300 62 780 830 88 2400 2800
NU 1030 M/C3VL2071 150 225 35 194 275 30 3200 3200
NU 230 ECM/C3VL2071 150 270 45 510 600 64 2600 2800
NU 330 ECM/C3VL2071 150 320 65 900 965 100 2200 2600

 

Common suffixes used for INSOCOAT bearings are:
VL024 and VA309 breakdown voltage to 500V and VL0241 and VA3091 breakdown voltage up to 1,000V. VA309 and VA3091 are applied to bearings for traction motor applications.

In principle, electrically-insulated bearings can be of any type. Most common bearing types include cylindrical roller bearings and deep groove ball bearings with outside diameters larger than 75 mm for traction motor designs, stationary electric motors (medium and large types), generators and special applications including submersible pumps. Also electrically-insulated taper roller bearings could be used as wheel bearings for tram and suspension tube bearings for electric railway vehicles.

China Bearing for construction machinery

Off-road construction machinery may work at low speed, but to raise productivity and reduce downtime, reliable operation under intense pressure is key.

Operators need to comply with strict environmental standards, control costs and improve machine performance. All types of machinery, from wheel loaders to road rollers, must continue to work effectively under harsh operating conditions.

Our expertise can help you achieve this. Components such as bearings, seals and lubricants play a key role in improving rotating equipment performance. Meanwhile, our smart lubrication systems help automate the maintenance process, and reduce costs, while condition monitoring spots early signs of component damage to prevent downtime.

Special bearing used in Construction Machinery as follows:

Planetary Gear Bearings
Excavator machinery bearing
hydraulic bearing
Bearing of hydraulic pump
Special needle roller bearing for hydraulic pump
Full complete cylindrical roller bearing without outer ring

Standard bearings – commonly used bearing types in construction and heavy machinery:

  • Spherical roller bearings
  • Cylindrical roller bearings
  • Tapered roller bearings
  • Spherical Plain Bearing

Construction machinery is the important part of assembly industry. Generally speaking, construction engineering, road construction and maintenance, flow type lifting handling operation and various construction projects need necessary for comprehensive mechanized construction engineering machinery and equipment, known as engineering machinery. It is mainly used in construction, transportation, national defense construction, energy industry, mine construction and production raw materials, such as construction and industrial production, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, environmental protection and other fields.

Excavator Bearing
Designation Dimension (mm) Designation Dimension (mm)
1 AC5033 250*330*37 111 BA289-1SA 289*355*32.5
2 AC5836 289*355*34 112 BA270-3 270*350*38
3 AC4629 230*290*27 113 BA115-1 115*145*15
4 AC4630 230*300*35 114 BA200-6 200*250*24
5 AC4631 230*310*38 115 BA168-1 168*205*20
6 AC4639 230*300*35 116 BA176-1 176*216*22
7 AC4531 225*315*36 117 BA135-6A 135*170*20
8 AC463240 230*320*40 118 BA135-16A 135*175*22
9 AC423040 210*300*40 119 BA165-6A 165*210*24
10 AC6037 300*370*33 120 BA257-1 257*315*30
11 AC523438-1 260*340*38 121 SF4831VPX1 240*310*33.4
12 BA130-1 130*166*18 122 SF4815VPX1 240*310*34
13 BA240-3WSA 240*310*32 123 SF4860VPX1 240*320*37
14 BA240-5WSA 240*308*30 124 SF4826VPX1 240*310*33
15 BA222-1WSA 222*273*26 125 SF4852VPX1 240*310*33
16 BN220-1 22O*280*28 126 B-SF4454VPX1 220*295*33
17 BA230-7 230*300*34 127 SF4444VPX1 220*295*32
18 BA222-5WSA 222*273*26 128 SF6015VPX1 300*372*36
19 BA280-4 280*400*39 129 SF4411VPX1 220*290*32.5
20 BA180-4WSA 180*250*33 130 SF4615VPX1 230*300*35
21 BA280-2SA 280*370*40 131 SF4460VPX1 220*300*35
22 BA200-7B 200*250*25 132 SF4903VPX1 245*305*31.5
23 BA300-4WSA 300*395*52 133 SF3215VPX1 160*200*20
24 BA340-1 340*440*52 134 SF5235VPX1 260*330*34,5
25 BA345-1WSA 345*470*52 135 SF3215 160*200*28
26 BA205-1 205*295*40 136 SF4007VPX1 200*250*25
27 BA290-3A 290*380*40 137 SF4910VPX1 243*312*33
28 BA250-4A 250*330*38 138 SF2812VPX1 140*175*17.5
29 BA246-1A 246*308*32 139 SF2907VPX1 143*175*17
30 BA246-2A 246*313*32 140 SF2912VPX1 145*200*27.5
31 BA200-10 200*280*38 141 SF3607VPX1 180*225*21
32 BA300-5 300*380*40 142 SF3227VPX1 160*200*20
33 BA230-2 230*320*40 143 SF3240VPX1 160*200*20
34 BA260-3 260*340*38 144 SF4019VPX1 200*260*30
35 BA260-4 260*340*38 145 4205VPX1 190*260*33
36 BA195-3A 195*280*36.15 146 SF4224PX1 210*180*35
37 BA165-19A 165*203*17 147 SF7938 190*260*45
38 BD185-6A 185*232*51 148 SA0355 289*355*33
39 BD222-1 222*273*50 149 SA0330 250*330*38
40 SDA155-200 155*200*47 150 SA0310 230*310*38
41 DE2618PX1 130*166*37 151 SA0400A 280*400*50
42 CR2256 110*150*20.5 152 SF4469PX1 220*276*26
43 CR4411 220*290*33 153 SDA0141 175*220*52
44 CR6016 300*380*38 154 22-0067 214*264*25
45 CR3914 195*242*24.5 155 BS225560/BS2255613 60*130*31
46 64450/64700 114.3*177.8*41.275 156 BS225740/BS225739-3 70*150*35
47 74550/74850 139,7*215.9*47.625 157 W67315EAHB/WRB67315 75*160*46
48 HM218248/10 89.974*146.975*40 158 W61312EH/WRB61312 60*130*31
49 HM518445/10 88.9*152.4*39.688 159 M7309EAH/MR7309 45*100*25
50 HM220149/10 99.974*156.975*42 160 M1311EAH/MR1311 55*120*29
51 47686/20 82.55*133.35*33.337 161 M1311CH/MU1311 55*120*29
52 T2EE100 100*165*47 162 M7315EAH/MR7315 75*160*46
53 JL819349/10 95*135*20 163 W61314EH/WRB61314 70*150*35
54 37431/37625 109.538*158.75*23.02 164 MU1308CAH/M1308X 40*90*23
55 37425/37625 107.95*158.75*23.02 165 MU1209CAH/M1209X 45*85*19
56 67790/20 177.8*247.65*47.625 166 MU1308SRAH/M1308X 40*90*23
57 T4DB200 200*270*34 167 M1308EAH/MR1308 40*90*23
58 18790/90037 50.8*85*34.92 168 M1212EHXW975/MA5212W972 60*110*22
59 36690/20 146.05*193.675*28.575 169 M1313CHW181C5/MU1313X 65*140*33
60 68462/68712 117.475*180.975*34.925 170 M67315EAHXW919/MR67315 75*160*46
61 580/572 82.55*139.992*80.962 171 W67220EAH/WR67220 100*180*34
62 598/592A 92.075*152.4*39.688 172 W1313EAH/WRB1313 65*140*33
63 594A/592 95.25*152.4*39.688 173 567079B 36*54.3*22
64 5K0985-47-575-572 76.2*139.992*73 174 F-212543 50*75.25*40
65 L853049/853010 276.225*352.425*36.512 175 F-208099 40*57.8*34
66 PSL610-304 220*265*25 176 10-8326 38*55.64*29.5
67 LM545849/10 234.95*314.325*36.512 177 10-8032 40*64*27
68 RC20E-00 87*113*14 178 F-208098 35*53.09*26.5
69 HS05250 200*250*24 179 F-229575.1 38*54.7*29.5
70 HT1529 250*330*38 180 F-208266 50*72.33*31
71 SF3313PX1 165*210*24 181 544741B 36*56.3*20
72 SDA0102 165*210*53.5 182 PLC55-200-1 50872.1*31
73 SF3658PX1 180*235*26.5 183 F-204781 40*61.55*36
74 SA0370 300*370*33 184 SF4820VPX1 240*310*34
75 SF3650PX1 182*214*18 185 302711 150*270*108
76 SF3417PX1 168*205*20 186 SR242207RHRRS 120*215*67
77 SF6413PX3 320*395*35 187 SF3170(SR131205C3F) 65*120*46
78 SF4640 230*290*26 188 6K5746(SR121104W33) 60*110*44
79 SF3666PX1 180*235*27 189 40BW06CG50 40*90*23
80 SF7002PX1 350*400*22 190 440D1024-0001/P4 150*182*16
81 220BA300 220*300*35 191 R25/26 25*52*22
82 42526-3 230*312*85 192 33205 25*52*22
83 310BN42-2 310*422*45 193 33205(3007205) 25*52*22
84 180BA2256 180*225*21.5 194 33207(3007207) 35*72*28
85 180BA2251 184*226*19 195 33213(3007213) 65*120*41
86 180BN19W 180*250*33 196 33220(3007220) 100*180*63
87 200BA27V-2 200*272*33 197 33115(3009715) 75*125*37
88 120BA16 120*165*22 198 32922(2007922) 110*150*25
89 245BA35S1 245*355*44 199 32924(2007924) 120*165*29
90 274BA330 274*330*30 200 32928(2007928) 140*190*32
91 240BA3251 240*320*38 201 32930(2007930) 150*210*38
92 105BA14 105*145*20 202 32934(2007934) 170*230*38
93 165BA203 165*203*17 203 32213(7513E) 65*120*31
94 151BA179 151*179*14 204 32214(7514E) 70*125*31
95 150BA20V 150*200*24 205 32215(7515E) 75*130*31
96 230BA30-2 230*300*33 206 32216(7516E) 80*140*33
97 160BA210 160*210*24 207 32217(7517E) 85*150*36
98 HS05145 117*145*14 208 32218(7518E) 90*160*40
99 HS05154 126*154*14 209 31309(27309E) 45*100*25
100 HS05383 320*383*30 210 31310(27310E) 50*110*27
101 SH0340 260*340*40 211 31311(2711E) 55*120*29
102 MC6034 300*340*18 212 31312(7312E) 80*130*31
103 BD110-1 110*140*28 213 F-32X46X28 32*46.6*28
104 BD130-1WSA 130*166*34 214 F-213617 55*77*41
105 BD130-16 130*166*38 215 CPM2509 55*83.54*46
106 (BD130-2) 130*166*34 216 BA1B633418 160*200*20
107 BD140-1 140*180*38 217 BA1B633419 190*240*22
108 BD155-6A 155*198*48 218 BA1B633420 220*270*24
109 BD165-6A 165*210*50
110 BD175-6A 175*220*52

Despite facing harsh operating conditions, crawler excavators must operate profitably in construction projects. They are required to move more materials with greater speed and reliability, suffer less downtime and use fuel more efficiently. Choosing components and services that raise efficiency, maintain uptime and reduce environmental impact is crucial.

An example of how this is achieved is the use of automatic lubrication systems. These perform a critical operation with essentially no human intervention. As well as streamlining and improving the process of lubrication, it leaves staff free to concentrate on other tasks. In some instances, it’s possible to avoid re-lubrication completely, with sealed bearings that are lubricated for life, like for example, our Explorer plain bearings.

CoatMaster Bearing supply Complete Bearings for Construction Machinery Industry, Its pleasure to know any demand from you who need this kinds of bearings, we would like to supply One-Stop Shopping for you,  this list we only showed the excavator bearing list, the more details demand, please contact with us.

Insulated Cylindrical Roller Bearing Manufacturer replace SKF, FAG, NSK, NKE,KOYO Brand

Insulated cylindrical roller bearing mean the same design with normal standard cylindrical roller bearing with coated insulated materials on the inner ring or outer ring. The cylindrical roller and raceway of the cylindrical roller bearing are linear contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the retaining edge of the ring is small, which is suitable for high-speed rotation. The inner and outer rings of cylindrical roller bearings can be separated. According to whether the rings have ribs or not, they can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN series.

Cylindrical roller insulated bearings are designed to prevent current from passing through the bearing. On the outer surface of the inner ring of the bearing or the outer surface of the outer ring, a layer of aluminum oxide coating with insulating properties is sprayed through a complex plasma spraying process, which can avoid the electric corrosion effect of the induced current on the bearing and prevent the current from affecting the grease and grease. Damage caused by rolling elements and raceways can increase the service life of the bearing. The external dimensions and basic technical characteristics of cylindrical roller insulated bearings are the same as ordinary cylindrical roller bearings, so they can be interchanged each other.

 

Designation Principal dimensions Basic load ratings Fatique load limit Speed ratings Weight
Cylindrical roller bearings mm mm mm dynamic static Reference speed Limiting speed kg
d D B C[kN] C0[kN] [r/min] [r/min]
NU 1010 ECP/C3VL0241 50 80 16 46.8 56 6.7 9500 9500 0.27
NU 210 ECM/C3VL0241 50 90 20 73.5 69.5 8.8 8500 9000 0.48
NU 310 ECM/C3VL0241 50 110 27 127 112 15 6700 8000 1.36
NU 1011 ECP/C3VL0241 55 90 18 57.2 69.5 8.3 8500 8500 0.4
NU 1011 ECML/C3VL0241 55 90 18 57.2 69.5 8.3 8500 13000 0.4
NU 211 ECM/C3VL0241 55 100 21 96.5 95 12.2 7500 8000 0.78
NU 311 ECM/C3VL0241 55 120 29 156 143 18.6 6000 7000 1.75
NU 1012 ML/C3VL0241 60 95 18 37.4 44 5.3 8000 13000 0.48
NU 1012 ECP/C3VL0241 60 95 18 58.3 73.5 8.8 8000 8000 0.48
NU 212 ECM/C3VL0241 60 110 22 108 102 13.4 6700 7500 0.1
NU 312 ECM/C3VL0241 60 130 31 173 160 21.2 5600 6700 2.2
NU 1013 ECP/C3VL0241 65 100 18 62.7 81.5 9.8 7500 7500 0.45
NU 213 ECM/C3VL0241 65 120 23 122 118 15.6 6300 6700 1.3
NU 313 ECM/C3VL0241 65 140 33 212 196 25.5 5300 6000 2.63
NU 1014 ECM/C3VL0241 70 110 20 76.5 93 12 7000 7000 0.7
NU 1014 ECP/C3VL0241 70 110 20 76.5 93 12 7000 7000 0.7
NU 214 ECM/C3VL0241 70 125 24 137 137 18 6000 6300 1.4
NU 314 ECM/C3VL0241 70 150 35 236 228 29 4800 5600 3.2
NU 1015 M/C3VL0241 75 115 20 58.3 71 8.5 6700 6700 0.75
NU 215 ECM/C3VL0241 75 130 25 150 156 20.4 5600 6000 1.5
NU 315 ECM/C3VL0241 75 160 37 280 265 33.5 4500 5300 4
NU 315 ECP/VL0241 75 160 37 280 265 33.5 4500 5300 4
NU 1016 ECM/C3VL0241 80 125 22 99 127 16.3 6000 6000 1.05
NU 216 ECM/C3VL0241 80 140 26 160 166 21.2 5300 5600 1.9
NU 316 ECM/C3VL0241 80 170 39 300 290 36 4300 5000 4.6
NU 1017 M/C3VL0241 85 130 22 68.2 86.5 10.8 6000 6000 1.1
NU 217 ECM/C3VL0241 85 150 28 190 200 25 4800 5300 2.3
NU 317 ECM/C3VL0241 85 180 41 340 335 41.5 4000 4800 5.4
NU 1018 M/C3VL0241 90 140 24 80.9 104 12.7 5600 5600 1.4
NU 218 ECM/C3VL0241 90 160 30 208 220 27 4500 5000 2.8
NU 318 ECM/C3VL0241 90 190 43 365 360 43 3800 4500 6.3
NU 1019 ML/C3VL0241 95 145 24 84.2 110 13.2 5300 5300 1.4
NU 219 ECM/C3VL0241 95 170 32 255 265 32.5 4300 4800 2.9
NU 319 ECM/C3VL0241 95 200 45 390 390 46.5 3600 4300 7.3
NU 1020 M/C3VL0241 100 150 24 85.8 114 13.7 5000 5000 1.5
NU 220 ECM/C3VL0241 100 180 34 285 305 36.5 4000 4500 4.05
NU 320 ECM/C3VL0241 100 215 47 450 440 51 3200 3800 8.7
NU 1022 M/C3VL0241 110 170 28 128 166 19.3 4500 4500 2.3
NU 222 ECM/C3VL0241 110 200 38 335 365 42.5 3600 4000 5.7
NU 322 ECM/C3VL0241 110 240 50 530 540 61 3000 3400 12
NU 1024 M/C3VL2071 120 180 28 134 183 20.8 4000 4000 2.7
NU 224 ECM/C3VL0241 120 215 40 390 430 49 3400 3600 6.7
NU 324 ECM/C3VL0241 120 260 55 610 620 69.5 2800 3200 14.9
NU 1026 M/C3VL2071 130 200 33 165 224 25 3800 3800 3.9
NU 226 ECM/C3VL2071 130 230 40 415 455 51 3200 3400 7.7
NU 326 ECM/C3VL2071 130 280 58 720 750 81.5 2400 3000 18.5
NU 1028 M/C3VL2071 140 210 33 172 245 27 3600 3600 4.1
NU 228 ECM/C3VL2071 140 250 42 450 510 57 2800 3200 9
NU 328 ECM/C3VL2071 140 300 62 780 830 88 2400 2800 25.5
NU 1030 M/C3VL2071 150 225 35 194 275 30 3200 3200 5
NU 230 ECM/C3VL2071 150 270 45 510 600 64 2600 2800 12
NU 330 ECM/C3VL2071 150 320 65 900 965 100 2200 2600 31.5

 

Compared with ordinary insulated bearings, cylindrical roller insulated bearings have good electrical corrosion resistance. By integrating insulation properties into the bearings, insulated bearings can improve reliability by eliminating electrical corrosion problems and extend the uptime of equipment. Cylindrical roller insulated bearings adopt a unique sealing process to encapsulate the bearings, which can be protected from humidity and moisture during use. The aluminum oxide coating on the surface has a minimum resistance of 200MΩ and can withstand a voltage of up to 3000V DC.

Features and benefits of Insulated cylindrical roller bearing
— Protection against electrical erosion
With insulating properties integrated into the bearing, INSOCOAT bearings can improve reliability and increase machine uptime by virtually eliminating the problem of electrical erosion.
— High electrical resistance
The aluminium oxide coating provides a minimum electrical resistance of 200 MΩ and can withstand voltages up to 3 000 V DC.
— Consistent electrical performance
Plasma-spray coatings are normally hygroscopic and, therefore, vulnerable to penetration caused by condensation. To protect against this effect, INSOCOAT bearings are treated with a unique sealant.

Cylindrical roller insulated bearings are widely used because of their characteristics:

— Power industry: Cylindrical roller insulated bearings for generators; wind generators, hydroelectric generators, and thermal generators.
— Railway industry: cylindrical roller insulated bearings for traction motors of diesel locomotives, used in locomotives, etc.
— Machinery and metallurgy industry: Insulated bearings for high-power inverter motors: used in cranes, textile machines, printing machines, iron-making equipment, steel-making equipment, rolling equipment, cutting equipment, coking equipment, smelting equipment, etc.
— Mining machinery industry: insulated bearings for high-power and high-voltage motors, used in mining machines, coal separators, coal washers, crushers, ball mills, grinders, sand mills
— Petrochemical industry: insulated bearings for high-power and high-voltage motors: used in compressors, etc.

 

Company Information

Factory add: Yandian Industrial zone, Liaocheng city, Shandong province of China

Tel: 86-635-8509787

Mobile: 0086-13280450757

Whatsapp: 0086-13280450757

Skype: brandbearings

E-mail: sales@bearing.plus, brandbearings@gmail.com

Global competition pattern of China bearing manufacturer

No.1 Asia accounts for half of the world’s from end user competition situation

Bearing is an important part of modern mechanical equipment, And its main function of rotation is to reduce the friction coefficient of the rotating body, and ensure its rotation accuracy. Therefore, its application range is very wide and the market demand is strong. Asia, represented by China and Japan, accounts for half of the global bearing consumption and becomes the largest bearing consumer market in the world. Europe and North America followed, with 25% and 20% respectively.

No.2 Supply side competition pattern: eight groups divide up the market

After years of industrial competition, the global bearing industry has formed a monopolistic competition pattern. The market is divided by eight multinational groups of Sweden, Germany, Japan and the United States, including Swedish enterprise SKF, German enterprise Schaeffler (INA+FAG), Japanese enterprise NSK, NTN, NMB, Nachi, jtket and American Enterprise TIMKEN, These eight companies account for more than 70% of the global market share.

— Competition pattern in China

Regional competition: five industrial clusters have their own characteristics

From the perspective of regional competition, China’s bearing industry has formed industrial clusters, including Wafang area of Liaoning Province, Luoyang region of Henan Province, eastern Zhejiang region, Liaocheng region of Shandong Province and Yangtze River Delta region. Each region has its own characteristics. For example, Liaoning Wafang area has the advantages of major equipment bearings, and eastern Zhejiang region is good at precision small and medium-sized bearings.

— Competition among Bearing manufacturer

Competition level: local enterprises occupy middle and low end market, From the level of competition, the high-end market of bearing manufacturing in China is mainly occupied by the eight multinational bearing groups mentioned above. China’s local enterprises mainly occupy the middle and low-end market, and the representative enterprises are renben Group Co., Ltd., Wanxiang Qianchao Co., Ltd., Wafangdian Bearing Group Co., Ltd. However, with the improvement of manufacturing technology by local bearing manufacturers, some large-scale local enterprises have been able to produce high-end products, such as the Supporting bearing of large electric wheel dump truck produced by ZWZ group, which has successfully replaced the imported products.

— Market concentration: low market concentration

China’s bearing manufacturing industry belongs to a completely competitive market with a large number of enterprises and low market concentration. According to the data of China Bearing Industry Association, in 2019, China’s bearing industry achieved a revenue of 177 billion yuan, of which the top 10 bearing manufacturers achieved 50.67 billion yuan, accounting for about 28.63 percent.

— Representative enterprise:

Representative enterprise: Renben Group’s Revenue First

In 2019, the top ten enterprises of bearing business income of Chinese bearing manufacturing enterprises

Company Name (Chinese languge) Company Name Representative products
1 人本集团有限公司 Renben Group Co., Ltd Automobile bearing, household appliance bearing
2 万向钱潮股份有限公司 Wanxiang Qianchao Co., Ltd Automobile bearing
3 瓦房店轴承集团有限公司 Wafangdian Bearing Group Corp. Spherical roller bearing
4 浙江天马轴承集团股份有限公司 Zhejiang Tianma Bearing Group Co., Ltd. Cylindrical roller bearing, deep groove ball bearing
5 洛阳LYC轴承有限公司 Luoyang LYC bearing Co., Ltd Extra large rolling mill bearings
6 浙江五洲新春集团股份有限公司 Zhejiang Wuzhou Xinchun Group Co., Ltd Small and medium precision bearings, tapered roller bearings
7 慈兴集团有限公司 Cixing Group Co., Ltd Precision ball bearing, miniature bearing
8 湖北新火炬科技股份有限公司 Hubei New Torch Science & Technology Co. Ltd wheel hub bearing
9 襄阳汽车轴承股份有限公司 Xiangyang Automobile Bearing Co., Ltd Automobile bearing
10 环驰轴承集团有限公司 Huanchi Bearing Group Co., Ltd High precision deep groove ball bearing, tapered roller bearings

— Product competition
According to the structure, Rolling bearing has the advantages of high transmission efficiency and good mechanical performance, which is the leading type in the bearing industry, the bearing type are:

1. Deep Groove ball bearing
2. Cylindrical roller bearing
3. Aligning ball bearing
4. Spherical Roller Bearing
5. Needle Roller Bearing
6. Mounted ball bearing unit
7. Angular contact ball bearing
8. Tapered Roller Bearing
9. Thrust ball bearing
10.Thrust roller bearing

And also the bearing have slide motion type

1. Spherical plain bearing
2. Linear bearing, linear guideways
3. Linear Sliding Guideway Rail

According to the size of the production: miniature and small size bearings, medium and large bearing,extra large bearing   According to the size classification, with the continuous development of bearing technology in China, bearing enterprises in China have begun to compete with foreign enterprises in the field of miniature and small bearing, with a large production volume. However, the output of bearing products above medium and large is still relatively small.   However, with the development of China’s major equipment manufacturing industries, such as aerospace and military industry, machine tools, wind power, etc., the demand for medium and large-scale bearing products is gradually increasing. Enterprises are also constantly introducing, developing and producing such bearing products, and the output has increased in recent years.

By downstream application products: Automobile bearing is the largest demand on the market   Bearings are widely used in the downstream. At present, bearings are mainly used in automobile industry, accounting for about 37%. The second are household appliance bearings, motor bearings and textile machinery bearings, accounting for 12%, 11% and 5% respectively.

New energy vehicle bearing is the new profit growth point of China Bearing Manufacturer

ZWZ’s efforts in the field of new energy vehicle bearings have finally paid off recently. The cylindrical roller bearing of a certain specification developed by them has stood out in the competition with many international well-known bearing enterprises. In the second half of the year, they began to batch support the world-famous Nordic luxury brand new energy SUV passenger cars. A new energy automobile bearing project was recently held in the 9th China Innovation and Entrepreneurship competition (Dalian competition area) and the 6th Dalian Innovation and entrepreneurship competition Won the first prize.

As the world’s largest producer of new energy vehicles, China’s new energy vehicles are in the ascendant. In order to meet the market demand of new energy vehicles, ZWZ group( Top 1 bearing manufacturer in China) has accelerated the research and development of supporting bearings, and has successively developed high-speed silent deep groove ball bearings, tapered roller bearings and cylindrical roller bearings with high speed, low noise and long life, which are matched with the drive and deceleration mechanism of new energy vehicles. Up to now, ZWZ group has developed nearly 50 kinds of bearing supporting new energy vehicles.

According to Wen Shaoying, director of the Automobile Bearing Research Institute of ZWZ group, the working speed of new energy automobile bearing is as high as 16000rpm. After special raceway design, special seal structure design, special silent grease selection, special raw material development and special heat treatment process application, the bearing group has achieved the basic theoretical research, bearing design and manufacturing, testing and service The strong coordination of the links has achieved the supporting standards of new energy automobile enterprises. The bearing shaft is two specifications of bearings for a famous brand new energy passenger car secondary reducer with differential gear box. In the three-way limit speed test conducted in the well-known bearing test center in China, the limit speed reaches 20400rpm and the test time reaches 1300 hours.

In the development of new energy vehicle bearing market, ZWZ group is giving full play to the advantages of batch supply in overseas market, driving the expansion of domestic market share, forming a good pattern of domestic and international dual market forces and synchronous promotion of front and rear markets, making new energy vehicle bearing a new profit growth point of the company.

China high quality cylindrical roller bearing manufacturer

Cylindrical Roller Bearings are a type of bearing that use cylindrical rolling elements instead of steel balls,These cylindrical rollers provide a larger contact area and are therefore able to support larger radial loads. Due to their design, Cylindrical Roller Bearings are unable to support significant thrust loads. Depending on the application, Cylindrical Roller Bearings are available with or without cages. Without a cage, Cylindrical Roller Bearings are able to support higher loads, however, this limits their application to low speed systems.

While Cylindrical Roller Bearings are typically supplied with both inner and outer races, these races can also be integrated into the shaft or other system components, Such design choices are often necessary when space is limited within the system.

Single Row Cylindrical Roller Bearings is one kind of Cylindrical roller bearing design. The material are adopt high quality chrome steel, this design are separable. the bearing ring with the rollers and cage assembly can be separated from the other ring, single row cylindrical roller bearings not only NU series design, but also N, NJ, NUP design, CoatMaster bearing have two integral flanges on the outer ring and no flanges on the outer ring. this kind of bearing can accommodate axial displacement of the shaft relative to the housing in both directions.

CoatMaster brand cylindrical roller bearing is the China Top Quality cylindrical roller bearing, we can see why CoatMaster higher quality than EASIER

New performance class

Cylindrical roller bearings with up to three times longer service life than the previous EASIER standard, which is superior to all other conventional cylindrical roller bearings. The performance improvements of  cylindrical roller bearings over the past 15 years have permitted downsizing, whilst still maintaining the required performance

Material

CoatMaster bearings feature an extremely clean and homogenous steel with a minimum number of inclusions. This improved steel is so much cleaner than the highest grades covered by present classifications. The reduction in the number of inclusions increases the fatigue strength in the rolling contacts and enables the bearings to operate much longer.

Heat treatment

New heat treatment procedures optimize the bearing resistance to operational damage and temperatures without affecting dimensional stability.

Logarithmic contact profile

This important feature of CoatMaster cylindrical roller bearings – for the past years – has been further refined for the rollers used in XRB bearings. The bearings are thus even less sensitive to small misalignment and can carry heavy loads.

Roller end/flange geometry

The optimized roller end/flange contacts of CoatMaster cylindrical roller bearings are also present in XRB bearings. The resultant advantages include reduced friction, lower operating temperatures and less wear

Material hardness

The hardness of the rings and rollers of CoatMaster bearings have been selected for optimum performance. This makes them less sensitive to contaminants and contributes to their extremely long service life.

Surface finish

The surface finish of the raceways on the rings and rollers has been further refined and provides enhanced lubrication conditions in CoatMaster bearings so that they can operate longer even under poor lubrication conditions.

Manufacturing quality

Upgraded manufacturing processes have contributed to a significant improvement in product quality. This means that the rings can be produced with an increased roundness and the deviation from true form of the rollers has also been further reduced. The results of the tighter tolerances may be invisible but the bearings run markedly quieter and with less vibration.

Cage design

The design and material of the cage can have a significant impact on a bearing’s ability to withstand given operating conditions. That is the reason for making XRB bearings available with up to four different cages. The design of the cages used in Coatmaster bearings contributes to good lubrication of all contact surfaces, even under occasional interruptions in lubricant supply.

Cylindrical Roller Bearings also have the other different design as follows

–Single Row Cylindrical Roller Bearings

–Double Row Cylindrical Roller Bearings

–High Capacity Cylindrical Roller Bearings

–Single Row Full Complement Cylindrical Roller Bearings

–Double Row Full Complement Cylindrical Roller Bearings

And different types of cylindrical roller bearings also have their different design according to their feather, and also many kinds of cages, just like Brass cage, Pressed Steel cage, nylon cage etc.

Feature of Cylindrical Roller Bearing

1.The rollers and raceway of inner ring and outer ring are in line contact or repair line contact, this design can make the bearing have large carry capacity. So Cylindrical roller bearing are suitable for heavy load and impact load.

  1. Low friction coefficient, suitable for high speed, its limited speed are closed to deep groove ball bearing.
  2. N and NU series Cylindrical roller bearing can move in axial direction, so they can accommodate to the changes in the relative position of the shaft and the housing due to thermal expansion or mounting errors.
  3. High standard for the machining of shaft or seat holes, Relatively skew for the axial of the outer ring should be control strictly. So the Contact stress concentration can be avoid.

The outer ring and inner ring of Cylindrical Roller Bearing are separatable, the design are easy installation and removal.

N, NU series cylindrical roller bearing

N series cylindrical roller bearing have no flange on outer ring, and double flange on inner ring. This design Allows displacement of the shaft relative to the bearing housing in both axial directions.

NU series cylindrical roller bearing have flange on both side of the outer ring, and no flange on inner ring, it also allows movement of the shaft relative to the housing in both axial directions, so this design suitable for used as floating bearing.

NJ, NF Series cylindrical roller bearing

NJ series cylindrical roller bearing have ribs on both side of the outer ring, and single flange on one side of inner ring. It Can withstand a certain degree of one-way axial load .

NF series cylindrical roller bearing have single flange on one side of outer ring, double flange on inner ring , it can carry certain degree of one way axial load. Therefore, this type of structure is suitable for use as a single direction axial locating bearing

NUP , NFP series

NUP Series cylindrical roller bearing have flange on both side of outer ring, and one fixed flange on one side of inner ring,and the other side are separable loose rib .it can bear a certain degree double direction axial load.

NFP series cylindrical roller bearing with fixed single flange on outer ring, and separable loose rib on the other side of outer ring, inner ring have flange on both side, it can take a certain degree axial load from double direction.

This kind of bearing can control the axial direction displacement of the shaft relatively bearing housing in two directions. Therefore, it is suitable for use as a fixed-end bearing.

Double Row Cylindrical Roller Bearing

Double Row cylindrical roller bearing have cylindrical bore and taper bore design, taper bore suffix K , This type of bearing has the compact structure, high rigidity, and large carrying capacity . Small deformation after load such advantage . Particularly suitable for machine tool spindle . taper bore can also play a minor role in adjusting the tolerance. And also can simplify the locating device structure . its Easy to install and remove. Commonly used double row cylindrical roller bearings have the following several forms.

XRB is the China bearing manufacturer, exporter, supplier, it can supply China Cylindrical roller bearing, Our large quantity Cylindrical Roller Bearings Stock can meet your need with good quality and fast delivery, Also you can find China cylindrical roller Bearing, the other type and brand bearing. just like NSK, SKF, NTN, KOYO, TIMKEN, McGill, PMI, ABBA, SBC, ZWZ, C&U, We accepted DHL,FEDEX,TNT express for small order and samples order,also the transportation By AIR or By Sea,by Train are all available, we asure we can ship high quality cylindrical roller bearing to your office at the first time.