# CSZBTR RU42 Crossed Roller Bearing (20 x 70 x 12 mm)

Low-cost RU42-size crossed roller bearing sold by a Changsha bearing trader with tiered pricing from 10 pieces, useful for prototype robot joints.

- Maglev ID: ac-cszbtr-ru42
- Brand: CSZBTR
- MPN: RU42
- Category: actuators / Crossed Roller Bearings
- Origin: CN (maker HQ, factory not confirmed)
- Maker: Changsha Terry Machinery Co., Ltd. (unknown, CN)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8482.50.0000
- MOQ: 10 · Lead time: unknown
- Confidence: REPORTED

## Price
- 10+: $40 (distributor, 2026-10-30, https://ntl-bearing.en.made-in-china.com/product/KxDYRBXJsIWQ/China-Crossed-Roller-Bearing-Ru42-Slewing-Bearing-for-Robot.html)
- 100+: $38 (distributor, 2026-10-30, https://ntl-bearing.en.made-in-china.com/product/KxDYRBXJsIWQ/China-Crossed-Roller-Bearing-Ru42-Slewing-Bearing-for-Robot.html)
- 1000+: $35 (distributor, 2026-10-30, https://ntl-bearing.en.made-in-china.com/product/KxDYRBXJsIWQ/China-Crossed-Roller-Bearing-Ru42-Slewing-Bearing-for-Robot.html)

## Specifications
- Bore: 20 mm
- Outside diameter: 70 mm
- Width: 12 mm
- Basic dynamic load rating C: 7.35 kN
- Type: Crossed roller, integral inner and outer rings with mounting holes (RU type)
- Basic static load rating C0: 8.35 kN

## Links
- Product: https://ntl-bearing.en.made-in-china.com/product/KxDYRBXJsIWQ/China-Crossed-Roller-Bearing-Ru42-Slewing-Bearing-for-Robot.html
- Datasheet: none
- CAD: none

## Equivalents
- THK RU42 Cross-Roller Ring (20 x 70 x 12 mm) (ac-thk-ru42)

## Sources
- https://ntl-bearing.en.made-in-china.com/product/KxDYRBXJsIWQ/China-Crossed-Roller-Bearing-Ru42-Slewing-Bearing-for-Robot.html (specs, price tiers, MOQ, image)