31310 Wheel Bearing
The DUHUI Bearing 31310 is a single-row tapered roller bearing with a 50 mm bore, 110 mm outer diameter, and 29.25 mm total width. This automotive wheel bearing is designed for combined radial and axial loads and is commonly used in wheel hubs, gearboxes, differentials, pinion shafts, and industrial machinery applications. It matches OE specification 31310 and serves as a direct replacement for workshops, distributors, and B2B buyers requiring a reliable bearing solution.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWB2503 |
| Part Number | 31310 |
| Product Type | Single Row Tapered Roller Bearing |
| Bore Diameter (d) | 50.00 mm (1.969 inch) |
| Outer Diameter (D) | 110.00 mm (4.331 inch) |
| Cone Width (B) | 29.25 mm (1.152 inch) |
| Cup Width (C) | 23.00 mm (0.906 inch) |
| Total Width (T) | 29.25 mm (1.152 inch) |
| Weight | 1.20 kg (2.65 lb) |
| Bearing Material | Case Carburized Steel |
| Cage Material | Pressed Steel Cage |
Note: Dimensional data is based on manufacturer published specifications from SKF, FAG, and NTN catalogs. Please verify measurements against your original bearing before ordering.
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code: DWB2503
OE Numbers:
31310
Reference Numbers (Interchange):
SKF: 31310, 31310J2Q
FAG: 31310A, 31310DY
NTN: 31310D, 31310U
TIMKEN: 31310
KOYO: 31310JR
NSK-RHP: 31310
Vehicle Fitment
Please verify OE number, dimensions and vehicle configuration before ordering. Fitment data is not available for this part number.
Product Features
- Single-row tapered roller bearing design accommodates high radial and axial loads in one direction. The conical raceways allow these versatile bearings to support combined loads effectively.
- Separable cone and cup components simplify mounting, dismounting, and maintenance. The cone unit consists of an inner ring with cage and roller set, while the cup is the outer ring.
- Manufactured to OE specifications with case carburized steel for durability and fatigue resistance.
- Pressed steel cage provides reliable roller guidance under load.
- Direct interchange with multiple major brand equivalents including SKF 31310, FAG 31310A, and NTN 31310D.
- Available for product customization – logo, code, pattern, or words can be applied to the bearing or packaging.
Installation Notes
- Confirm bore diameter (50.00 mm) and outer diameter (110.00 mm) match your housing and shaft before installation.
- This is a single-row tapered roller bearing – these bearings must be mounted in mirror-image arrangement together with a second tapered roller bearing. Paired bearing sets can be applied in X, O, or tandem arrangements.
- Inspect the housing and shaft surfaces for wear or damage before installing new components.
- Apply even pressure when pressing the cone onto the shaft and the cup into the housing – never apply force directly through the rolling elements.
- Proper bearing preload is critical for tapered roller bearings – refer to the vehicle service manual for torque specifications.
- Pack the bearing with high-quality grease before installation if not pre-lubricated.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces wheel bearings and automotive components to OE specifications. Contact us
