rolling bearings

crossed roller bearings

crossed roller bearings

Crossed roller bearings have the rollers placed axially perpendicular to each other alternately and therefore are called crossed roller bearings. The rollers are sparated by disc shaped spacers instead of a traditional retaining cage. Either the inner ring or the outer ring is split and held together by retaining rings and the corresponding outer ring or inner ring is one piece. These bearings are therefore separable.

Crossed roller bearings can carry high radial loads, high axial loads in either direction, as well as moment loads. These bearings also have high rigidity and high running accuracies.

Versions of crossed roller bearings

Crossed tapered roller bearings

  • XR series
  • JXR series

Crossed cylindrical roller bearings

  • CRBH series
  • RB series
  • RU series
  • SX series
  • XU series

models

ModelInner Outer Width Interchange
 d (mm)D(mm)B(mm)SKFNACHIURBPSL
XR496051203.2279.431.75616093A///
XR678052330.2457.263.5615661A300XRN50/PSL 912-309A
XR766051457.2609.663.5615894A0457XRN060XD.10.0457P5PSL 912-308A
XR82006058076080615662A580XRN76XD.10.0580P5PSL 912-304A
XR855053685.8914.479.375615659A0685XRN091XD.10.0686P5PSL 912-305A
XR882055901.71117.682.55615895A0901XRN112XD.10.0902P5PSL 912-306A
XR8890581028.71327.15114.3BFKB353282/HA41028XRN132XD.10.1029P5PSL 912-307A
XR8970511549.41828.8101.6615898A/XD.10.1549P5/
JXR63705030040037////
JXR65205031042545////
JXR69905037049550////
Crossed cylindrical roller bearings
CRBH type(Whole inner and outer ring, ultra-thin)
Modelinner ringouter ringRoller pitch circle diameterwidthweight
 dDDpwB  B1kg
CRBH208203626.680.04
CRBH258254131.180.05
CRBH3010305541.5100.12
CRBH3510356046.5100.13
CRBH4010406551.5100.15
CRBH4510457056.5100.16
CRBH5013508063.5130.29
CRBH6013609074130.33
CRBH70137010082.3130.38
CRBH801680120100160.74
CRBH901690130108160.81
CRBH10016100140120.2160.83
CRBH10020100150122201.45
CRBH11015110145126.5150.75
CRBH11020110160133201.56
CRBH12016120150132.5160.72
CRBH12025120180148.3252.62
CRBH13015130160143.1150.72
CRBH13025130190158252.82
CRBH14016140175154.816 
CRBH14025140200168252.96
CRBH15025150210180253.16
CRBH20025200260230254
CRBH20035200295247.7359.6
CRBH22025200260248.5254.1
CRBH25025250310277.5254.97
CRBH25030250330287.5308.1
CRBH400354004804393514.5
CRBH50040500600548.84026
RB type (outer ring split, inner ring integral)
Modelinner ringouter ringRoller pitch circle diameterwidth 
 dDDpwB  B1kg
RB200820362780.04
RB250825413280.05
RB3010305541.5100.12
RB3510356046.5100.13
RB4010406552100.16
RB4510457057.5100.17
RB5013508065130.27
RB6013609075130.3
RB70137010082.3130.35
RB801680120100160.7
RB901690130108160.75
RB10016100140120.2160.83
RB10020150123201.45
RB11012110135121.8120.4
RB11015145126.5150.75
RB11020160133201.56
RB12016120150132.5160.72
RB12025180148.3252.62
RB13015130160143.1150.72
RB13025190158152.82
RB14016140175154.8161
RB14025200168252.96
RB15013150180164130.68
RB15025210180253.16
RB15030230188305.3
RB16025160220188253.14
RB17020170220192202.21
RB18025180240208253.44
RB19025190240212252.99
RB20025200260230254
RB20030280240306.7
RB20035295247.7359.6
RB22025220280248.5254.1
RB24025240300269254.5
RB25025250310277.5255
RB25030330287.5308.1
RB25040355300.74014.8
RB30025300360328255.9
RB300353953453513.4
RB30040405351.64017.2
RB35020350400373.4203.9
RB400354004804393514.5
RB400405104514023.5
RB45025450500472256.6
RB50025500550524.2257.3
RB50040600548.84026
RB50050625561.65041.7
RB600406007006474029
RB70045700815753.54546
RB80070800950868.170105
RB90070900105096970120
RB1000110100012501114110360
RB1250110125015001365110440
RU type(Integral inner and outer rings, with mounting holes)
Modelinner ringouter ringRoller pitch circle diameterwidthweight
 dDDpwB  B1kg
RU42207041.5120.29
RU66359566150.62
RU855512085151
RU  124(G) 80165124222.6
RU 124X
RU  148(G)90210148254.9
RU  148X
RU  178(G)115240178286.8
RU  178X
RU  228(G)160295227.53511.4
RU  228X
RU  297(G)210380297.34021.3
RU  297X
RU  445(G)350540445.44535.4
RU  445X
Modelinnerouterwidth
 dDB
SX011814709010
SX0118189011513
SX01182010012513
SX01182412015016
SX01182814017518
SX01183216020020
SX01183618022522
SX01184020025024
SX01184824030028
SX01186030038038
SX01186834042038
SX01188040050046
SX0118/50050062056
Modelinner ringouter ringwidth
 dD
XU0500774011222
XU0600945714026
XU06011176.2145.7915.87
XU0801206917030
XU080149101.6196.8522.22
XU120179124.523435
XU12022214030036
XU16026019132946
XU080264215.931125.4
XU16040533647446
XU08043038048026
XU30051538464686

application of crossed roller bearings

  • Joint units of robots
  • Precision rotary bables
  • Precision measuring instrument

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