SKF HM31/630 Bearing lock nut (keyway type)
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Product Description
SKF HM31/630 bearing lock nut (keyway type). Bearing lock nut in the KM series with axial keyway that engages an MB lock washer. Locks a bearing, adapter sleeve or withdrawal sleeve axially on a shaft. Thread size and boundary dimensions per ISO 2982-1 / DIN 981. Nut always paired with the matching MB washer of the same numeric designation.
Technical Specifications
- Type
- Bearing lock nut (keyway type)
- Designation
- SKF HM31/630
- Bore d
- 630 mm
- HS code
- 8483.30
- Thread designation
- Tr 630x6
- Bore diameter
- 630 mm
- Outside diameter
- 800 mm
- Width
- 95 mm
- Locking device
- Locking clip
- Nut for hydraulic mounting
- No
- Associated mounting tool
- TMFN 600-750
- Product net weight
- 132 kg
- eClass code
- 23-11-07-05
- UNSPSC code
- 31163218
Standards & Compliance
- Standard
- SKF designation convention (see description for governing ISO / DIN)
- Material
- As declared by SKF designation suffix
- Temperature Range
- Per SKF product data
- HS Code
- 8483.30
Cross References
- FAG 31630
- NSK 31630
- Timken 31630
- NTN 31630
- Koyo 31630
- Equivalent: 31630 (FAG)
- Equivalent: 31630 (NSK)
- Equivalent: 31630 (Timken)
- Equivalent: 31630 (NTN)
- Equivalent: 31630 (Koyo)
Compatibility & Fitment
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.
Product Documentation
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Technical guides
Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy HM31/630?
- HM31/630 can be ordered from cballast.com as a SKF catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this SKF product?
- The manufacturer part number is HM31/630.
- What is the HS code for HM31/630?
- The customs tariff (HS) code for HM31/630 is 8483.30.
- Who manufactures HM31/630?
- HM31/630 is a SKF product in the Bearings & Power Transmission range.
- Is a datasheet available for HM31/630?
- Yes — the HM31/630 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for HM31/630?
- The minimum order quantity is 1.
- Is HM31/630 available?
- Yes — HM31/630 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).