SKF W638/4R-2Z — Deep-groove ball bearing
SKF · Bearings & Power Transmission · Deep Groove Ball Bearings
SKF W638/4R-2Z deep-groove ball bearing. Deep-groove ball bearing designed for combined radial and moderate axial load, high running speed and low frictional torque. Manufactured to ISO 492 (Class Normal / P6 / P5) with standard C0 radial internal clearance unless a suffix declares otherwise. Available in open, single-shielded (Z), double-shielded (2Z), single-lip contact-sealed (RSH / RS1), and double-lip contact-sealed (2RSH / 2RS1) execution. Designation follows the SKF alphanumeric identification convention where the numeric block encodes the boundary plan and the suffix declares execution options.
Specifications
- Part number
- W638/4R-2Z
- HS code
- 8482.10
- 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Also known as — OEM cross-references & superseded numbers
- Timken 63842
- NSK 63842
- NTN 63842
- FAG 63842
- Koyo 63842
- NACHI 63842
- Competitor equivalent: 63842 (Timken)
- Competitor equivalent: 63842 (NSK)
- Competitor equivalent: 63842 (NTN)
- Competitor equivalent: 63842 (FAG)
- Competitor equivalent: 63842 (Koyo)
- Competitor equivalent: 63842 (NACHI)
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