RA Series (Thin Crossed Roller)
Structure: Thin Crossed Roller / Compact
Material: Bearing Steel (Gcr15) / SUJ2
Precision: P5, P4, P2
Rigidity: Medium-High
Mounting Type: Through-bolt / Integral Flange
Bore Range: 50mm – 300mm
Application: Robot joints, medical CT scanners, compact rotary actuators
WhatsApp: +86 18663551233
Get a Quote
The RA Series thin crossed roller bearings deliver exceptional rigidity in a space-saving thin cross-section profile. The crossed roller arrangement (rollers alternating at 90°) handles radial, axial, and moment loads simultaneously from a single bearing position. Perfect for robot joints, medical CT scanner gantries, and compact rotary actuators where space is at a premium.
Technical Specifications
| Bearing No. | Bore (d) mm | Outer Dia. (D) mm | Width (B) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Max Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| RA5008 | 50 | 66 | 8 | 5.10 | 7.19 | 500 | 0.08 |
| RA6008 | 60 | 76 | 8 | 5.68 | 8.34 | 450 | 0.09 |
| RA7008 | 70 | 86 | 8 | 5.98 | 9.32 | 400 | 0.10 |
| RA8008 | 80 | 96 | 8 | 6.37 | 10.3 | 350 | 0.11 |
| RA9008 | 90 | 106 | 8 | 6.76 | 11.3 | 320 | 0.12 |
| RA10008 | 100 | 116 | 8 | 7.15 | 12.4 | 300 | 0.14 |
| RA11008 | 110 | 126 | 8 | 7.45 | 13.4 | 280 | 0.15 |
| RA12008 | 120 | 136 | 8 | 7.84 | 14.5 | 260 | 0.16 |
