CRB Crossed roller bearings

CRB CROSSED ROLLER BEARINGS

CRB Series

The CRB Series features a split outer ring and a full complement of rollers and is most suited to applications where precise inner ring rotation is required such as the joints for industrial robots, rotary tables of machining centers, medical machines and measuring equipment.

The outer rings are held together by factory fitted bolts. These must not be removed under any circumstances as this will affect the bearing’s performance.

The basic sizes are tabulated below. More details are available in the QBC Precision Bearings catalogue

Outline dimensionsHousing ØLoad capacityWeight
QCB referenceDiDaHr mindsdhCCo
mmmmmmmmmmmmKNKNkg
CRB 2008203680.522.831.23.233.10.04
CRB 2508254180.527.836.23.633.830.05
CRB 30103055100.635.847.27.358.360.12
CRB 35103560100.640.852.27.649.120.13
CRB 40104065100.646.357.78.3310.60.16
CRB 45104570100.651.863.28.6211.30.17
CRB 50135080130.657.972.116.720.90.27
CRB 60136090130.667.982.11824.30.30
CRB 701370100130.575.289.419.427.70.35
CRB 801680120160.691.5108.530.142.10.70
CRB 901690130160.699.5116.531.445.30.75
CRB 10016100140161111.7128.731.748.60.83
CRB 10020100150201110.7133.333.150.91.45
CRB 11012110135120.6116127.512.524.10.40
CRB 11015110145150.611813523.741.50.75
CRB 11020110160201120.7143.334541.56
CRB 12016120150160.5125.4139.624.243.20.72
CRB 12025120180251.5134.2162.466.91002.62
CRB 13015130160150.61361502546.70.72
CRB 13025130190251.5143.917269.51072.82
CRB 14016140175160.6146.3163.325.950.11.00
CRB 14025140200251153.918274.81212.96
CRB 15013150180130.6156.9171.12753.60.68
CRB 15025150210251165.9194.176.81283.16
CRB 15030150230301.5166.8209.21001565.3
CRB 16025160220251.5173.9202.181.71353.14
CRB 17020170220201.5180.7203.32962.12.21
CRB 18025180240251.5193.9222.1841433.44
CRB 19025190240251200.7223.341.782.92.99
CRB 20025200260251.5215.9244.184.21574.0
CRB 20030200280302218.8261.21142006.7
CRB 20035200295352226.5268.91512529.6
CRB 22025220280252234.4262.692.31714.1
CRB 24025240300251.5254.9283.168.31454.5
CRB 25025250310252263.4291.669.31505.0
CRB 25030250330302.5270.5304.51262448.1
CRB 25040250355402.5278.1323.319534814.8
CRB 30025300360251.5313.9342.176.31785.9
CRB 30035300395352.5323.8366.218336713.4
CRB 30040300405402.5330.4372.821240917.2
CRB 35020350400201362.1384.754.11433.9
CRB 40035400480352.542245615637014.5
CRB 40040400510402.5429.847224153123.5
CRB 45025450500251460.7483.361.71826.6
CRB 50025500550251512.9535.565.52017.3
CRB 50040500600402.5527.657023960726
CRB 50050500625502.5533.3589.926765341.7
CRB 60040600700403625.8668.226472129
CRB 70045700815453725.2781.828183646
CRB 80070800950704828.5907.74681330105
CRB 900709001050704929.41008.64941490120
CRB 10001101000125011051057.41170.612203220360
CRB 12501101250150011051308.41421.613503970440

Characteristics

Very rigid and accurate bearing systems that support axial, radial and moment loads with high running accuracy
  • Available with clearance or preload (i.e. after installation)
  • Available in Normal, P6, P5, P4 and P2 precision grades in diameters from 50 – 800mm diameter bore
  • Also available with seals
 

Numbering system

Example:   CRBC 12025 UU CC0 P5


CRBC         Model
120            Bore diameter
25              Thickness
UU             Sealed both sides / leave blank for no seal
CC0            CC0 = light preload; C0 or C1 = positive clearance
P5              Precision grade

 

 

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