SKF 31313 Tapered roller bearing
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Product Description
SKF 31313 tapered roller bearing. Single-row tapered roller bearing designed to take combined heavy radial and one-direction axial load. Rollers, inner ring raceway (cone) and outer ring raceway (cup) are ground to converge at a common apex on the bearing axis. Two bearings are always mounted in opposition so the pair carries axial load in both directions and can be preloaded to remove all internal clearance. Metric dimensions per ISO 355 / ISO 492 Class Normal. Bore diameter d = 65 mm per ISO 15.
Technical Specifications
- Type
- Tapered roller bearing
- Designation
- SKF 31313
- Standard
- ISO 15 / DIN 623 dimension plan; ISO 492 Class Normal precision
- HS code
- 8482.20
- Bore diameter
- 65 mm
- Outside diameter
- 140 mm
- Width, total
- 36 mm
- Width, inner ring
- 33 mm
- Width, outer ring
- 23 mm
- Contact angle
- 28.8 °
- Basic dynamic load rating
- 203 kN
- Basic static load rating
- 193 kN
- Reference speed
- 3600 r/min
- Limiting speed
- 4800 r/min
- SKF performance class
- SKF Explorer
- Bearing part
- Complete bearing
- Number of rows
- 1
- Locating feature, bearing outer ring
- Without
- Bore type
- Cylindrical
- Cage
- Sheet metal
- Arrangement of contact angle (double-row bearing)
- Not applicable
- Matched arrangement
- No
- Coating
- Without
- Sealing
- Without
- Lubricant
- None
- Relubrication feature
- Without
- Unit system
- Metric
- Indicative carbon footprint for new product
- 8.7 kg CO2e
- Product net weight
- 2.35 kg
- eClass code
- 23-05-09-10
- UNSPSC code
- 31171516
Standards & Compliance
- Standard
- ISO 15 / ISO 492 / DIN 623
- Material
- Bearing steel — 100Cr6 (through-hardened) or SNR-nitrided; cage as declared by suffix
- Temperature Range
- -30 to +120 °C standard grease
- HS Code
- 8482.20
Cross References
- Timken 31313
- NSK 31313
- NTN 31313
- FAG 31313
- Koyo 31313
- Equivalent: 31313 (Timken)
- Equivalent: 31313 (NSK)
- Equivalent: 31313 (NTN)
- Equivalent: 31313 (FAG)
- Equivalent: 31313 (Koyo)
Compatibility & Fitment
ISO 15 boundary-plan interchange — the numeric bore-code block is portable across every ISO 15 bearing manufacturer (SKF, Timken, NSK, NTN, FAG, Koyo, NACHI). Confirm suffix compatibility on cage, seal, clearance and precision class before substitution.
Product Documentation
More from SKF
Technical guides
- Tapered Roller Bearing Finder — by Bore and Series (302, 303, 313, 320, 322, 323, 329–332, Inch Cone/Cup) SKF
- SKF 81xxx Cylindrical Roller Thrust Bearing — Dimensions, Load Ratings & Interchange (81102 to 81140)
- SKF Deep Groove Ball Bearing Reference — 6000 / 6200 / 6300 / 6400 Series (Dimensions, Load Ratings, Interchange to FAG NSK NTN Timken)
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 31313?
- 31313 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 31313.
- What is the HS code for 31313?
- The customs tariff (HS) code for 31313 is 8482.20.
- Who manufactures 31313?
- 31313 is a SKF product in the Bearings & Power Transmission range.
- Is a datasheet available for 31313?
- Yes — the 31313 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 31313?
- The minimum order quantity is 1.
- Is 31313 available?
- Yes — 31313 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).