# THK RU42 Cross-Roller Ring (20 x 70 x 12 mm)

![THK RU42 Cross-Roller Ring (20 x 70 x 12 mm)](https://parts.trymaglev.com/img/ac-thk-ru42.webp)

THK's RU42 one-piece cross-roller ring with mounting holes, the reference part Chinese RU-type bearings copy.

- Maglev ID: ac-thk-ru42
- Brand: THK
- MPN: RU42UUC0
- Category: actuators / Crossed Roller Bearings
- Origin: JP (maker HQ, factory not confirmed)
- Maker: THK Co., Ltd. (brand, JP)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8482.50.0000
- MOQ: 1 · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: $562 (distributor, 2026-10-30, https://acorn-ind.co.uk/p/ru42uuc0-thk)

## 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://acorn-ind.co.uk/p/ru42uuc0-thk
- Datasheet: https://tech.thk.com/en/products/pdf/en_a18_022.pdf
- CAD: none

## Equivalents
- CSZBTR RU42 Crossed Roller Bearing (20 x 70 x 12 mm) (ac-cszbtr-ru42)

## Sources
- https://tech.thk.com/en/products/pdf/en_a18_022.pdf (THK catalog A18-22 RU table (d, D, B, C, C0, mass))
- https://acorn-ind.co.uk/p/ru42uuc0-thk (price, country of origin, image)