SKF K25X31X21 — Needle roller and cage assembly (K / KBK / KZK)
SKF · Bearings & Power Transmission · Needle Roller & Cage Assemblies
SKF K25X31X21 needle roller and cage assembly (k / kbk / kzk). Needle roller and cage assembly with no supplied inner or outer race — installed between a hardened, ground shaft and a hardened, ground housing bore. Provides the smallest possible radial cross-section. Series K / KBK per ISO 3245. Suitable for planetary-gear pinions, universal-joint yokes. Designation follows the SKF alphanumeric identification convention where the numeric block encodes the boundary plan and the suffix declares execution options.
Specifications
- Part number
- K25X31X21
- HS code
- 8482.40
- Material
- As declared by SKF designation suffix
- Temperature range
- Per SKF product data
- Standard
- SKF designation convention
Compatibility
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.
Also known as — OEM cross-references & superseded numbers
- INA 253121
- Torrington / Timken 253121
- IKO 253121
- NTN 253121
- Competitor equivalent: 253121 (INA)
- Competitor equivalent: 253121 (Torrington / Timken)
- Competitor equivalent: 253121 (IKO)
- Competitor equivalent: 253121 (NTN)
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