RA5008UU crossed roller bearing
Inner ring: 55mm
Outer ring: 66mm
Width: 8mm
Weight: 0.08kg
Structure: crossed cylindrical roller bearing with separators, without mounting holes.
Materials: GCr15
Lubrication type: Grease lubrication
Lubrication hole: Yes
Load direction: axial, radial and tilting moment.
Type of guide: Roller
Space retainer: Yes
Material: GCr15
Standard lubrication method: Grease lubrication
Oil hole: Yes
Sealing: Oil seal at both sides
Radial clearance: -0.01 ~ 0
Rotation accuracy: P5/P4
Working temperature: -20℃ ~ 80℃
RA cross roller bearing models
| Model No. | d (mm) | D (mm) | B (mm) | Cr (kN) | Cor (kN) | Mass(kg) |
| RA5008 | 55 | 66 | 8 | 5.1 | 7.19 | 0.08 |
| RA6008 | 60 | 76 | 8 | 5.68 | 8.68 | 0.09 |
| RA7008 | 70 | 86 | 8 | 5.98 | 9.8 | 0.1 |
| RA8008 | 80 | 96 | 8 | 6.37 | 11.3 | 0.11 |
| RA9008 | 90 | 106 | 8 | 6.76 | 12.4 | 0.12 |
| RA10008 | 100 | 116 | 8 | 7.15 | 13.9 | 0.14 |
| RA11008 | 110 | 126 | 8 | 7.45 | 15 | 0.15 |
| RA12008 | 120 | 136 | 8 | 7.84 | 16.5 | 0.17 |
| RA13008 | 130 | 146 | 8 | 7.94 | 17.6 | 0.18 |
| RA14008 | 140 | 156 | 8 | 8.33 | 19.1 | 0.19 |
| RA15008 | 150 | 166 | 8 | 8.82 | 20.6 | 0.2 |
| RA16013 | 160 | 186 | 13 | 23.3 | 44.9 | 0.59 |
| RA17013 | 170 | 196 | 13 | 23.5 | 46.5 | 0.64 |
| RA18013 | 180 | 206 | 13 | 24.5 | 49.8 | 0.68 |
| RA19013 | 190 | 216 | 13 | 24.9 | 51.5 | 0.69 |
| RA20013 | 200 | 226 | 13 | 25.8 | 54.7 | 0.71 |
RA...UU is sealed type.
RIGBRS type RA5008 Crossed Roller Bearing has high rigidity, loading capacity and rotation accuracy. It has integrated inner ring and separable outer ring, share the same structure with RB crossed roller bearing except it's ultra-thin. Suited for where light weight, compact design are required, such as the swiveling units of industrial robot or manipulators.













