Products

BRS High Precision Cross Roller Ring THK RB series

RB cross roller ring belongs to the basic model of high precision cross roller bearings. Its cylindrical rollers are placed in a 90°V groove, with each roller arranged in perpendicular to the adjacent one, and separated from each other by a space retainer. RB crossed roller ring’s outer ring is designed to be separable, and fixed by screw, suited for locations where the rotation accuracy of the inner ring is required.

RB Series Crossed Roller Bearing Features

1. Sustain radial, axial and moment loads at the same time.

2. High rotation accuracy is ensured through adjusting the bearing clearance to preload.

3. Stable rotation, spacer retainer keeps rollers in proper position, preventing them from skewing, thus eliminates friction between rollers.

Applications

RB cross roller rings are specially suitable for the applications where space is limited, while high rigidity and high rotation accuracy are required. Such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines.

RB Crossed Roller Bearing Models

Part NO. Dimension(mm) Base Load Ratings(kN) Mass (kg) Equivalent Model
d D B Cr Cor IKO NSK
RB2008 20 36 8 3.23 3.1 0.04 - -
RB2508 25 41 8 3.63 3.83 0.05 - NRXT2508
RB3010 30 55 10 7.35 8.36 0.12 CRB3010 -
RB3510 35 60 10 7.64 9.12 0.13 - -
RB4010 40 65 10 8.33 10.6 0.16 CRB4010 NRXT4010
RB4510 45 70 10 8.62 11.3 0.17 - -
RB5013 50 80 13 16.7 20.9 0.27 CRB5013 NRXT5013
RB6013 60 90 13 18 24.3 0.3 CRB6013 NRXT6013
RB7013 70 100 13 19.4 27.7 0.35 CRB7013 NRXT7013
RB8016 80 120 16 30.1 42.1 0.7 CRB8016 NRXT8016
RB9016 90 130 16 31.4 45.3 0.75 CRB9016 NRXT9016
RB10016 100 140 16 31.7 48.6 0.83 - -
RB10020 100 150 20 33.1 50.9 1.45 CRB10020 NRXT10020
RB11012 110 135 12 12.5 24.1 0.4 - -
RB11015 110 145 15 23.7 41.5 0.75 - -
RB11020 110 160 20 34 54 1.56 CRB11020 NRXT11020
RB12016 120 150 16 24.2 43.2 0.72 - -
RB12025 120 180 25 66.9 100 2.62 CRB12025 NRXT12025
RB13015 130 160 15 25 46.7 0.72 - -
RB13025 130 190 25 69.5 107 2.82 CRB13025 NRXT13025
RB14016 140 175 16 25.9 50.1 1 - -
RB14025 140 200 25 74.8 121 2.96 CRB14025 NRXT14025
RB15013 150 180 13 27 53.5 0.68 - -
RB15025 150 210 25 76.8 128 3.16 CRB15025 NRXT15025
RB15030 150 230 30 100 156 5.3 CRB15030 NRXT15030
RB16025 160 220 25 81.7 135 3.14 - -
RB17020 170 220 20 29 62.1 2.21 - -
RB18025 180 240 25 84 143 3.44 - -
RB19025 190 240 25 41.7 82.9 2.99 - -
RB20025 200 260 25 84.2 157 4 CRB20025 NRXT20025
RB20030 200 280 30 114 200 6.7 CRB20030 NRXT20030
RB20035 200 295 35 151 252 9.6 CRB20035 -
RB22025 220 280 25 92.3 171 4.1 - -
RB24025 240 300 25 68.3 145 4.5 - -
RB25025 250 310 25 69.3 150 5 CRB25025 NRXT25025
RB25030 250 330 30 126 244 8.1 CRB25030 NRXT25030
RB25040 250 355 40 195 348 14.8 CRB25040 -
RB30025 300 360 25 76.3 178 5.9 CRB30025 NRXT30025
RB30035 300 395 35 183 367 13.4 CRB30035 NRXT30035
RB30040 300 405 40 212 409 17.2 CRB30040 NRXT30040
RB35020 350 400 20 54.1 143 3.9 - -
RB40035 400 480 35 156 370 14.5 RB40035 NRXT40035
RB40040 400 510 40 241 531 23.5 RB40040 NRXT40040
RB45025 450 500 25 61.7 182 6.6 - -
RB50025 500 550 25 65.5 201 7.3 - -
RB50040 500 600 40 239 607 26 CRB50040 NRXT50040
RB50050 500 625 50 267 653 41.7 CRB50050 NRXT50050
RB60040 600 700 40 264 721 29 CRB60040 NRXT60040
RB70045 700 815 45 281 836 46 CRB70045 -
RB80070 800 950 70 468 1330 105 CRB80070 -
RB90070 900 1050 70 494 1490 120 - -
RB1000110 1000 1250 110 1220 3220 360 - -
RB1250110 1250 1500 110 1350 3970 440 - -