SKF F4B20M-WF — Flanged ball bearing unit (UCF / UCFC / UCFL)
SKF · Bearings & Power Transmission · Flanged Ball Bearing Units
SKF F4B20M-WF flanged ball bearing unit (ucf / ucfc / ucfl). Square four-bolt (UCF), round three-bolt (UCFC) or oval two-bolt (UCFL) flanged housing pre-assembled with a spherical-outer-ring insert bearing. Absorbs shaft-to-housing misalignment on assembly. Set-screw shaft attachment on standard UC-series insert; eccentric-collar (UEL) or adapter-sleeve (UK) variants available. Dimensioned to ISO 3228 / DIN 626. Designation follows the SKF alphanumeric identification convention where the numeric block encodes the boundary plan and the suffix declares execution options.
Specifications
- Part number
- F4B20M-WF
- HS code
- 8483.20
- 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Also known as — OEM cross-references & superseded numbers
- NTN 420
- NSK 420
- FAG 420
- Koyo 420
- ASAHI 420
- Competitor equivalent: 420 (NTN)
- Competitor equivalent: 420 (NSK)
- Competitor equivalent: 420 (FAG)
- Competitor equivalent: 420 (Koyo)
- Competitor equivalent: 420 (ASAHI)
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