31309 Wheel Bearing
The DUHUI Bearing 31309 is a single-row tapered roller bearing with a 45 mm bore, 100 mm outer diameter, and 27 mm total width. This automotive wheel bearing is designed for combined radial and axial loads and is commonly used in wheel hubs, gearboxes, and industrial machinery applications. It matches OE specification 31309 and serves as a direct replacement for workshops, distributors, and B2B buyers requiring a reliable bearing solution.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWB2504 |
| Part Number | 31309 |
| Product Type | Single Row Tapered Roller Bearing |
| Bore Diameter (d) | 45.00 mm (1.772 inch) |
| Outer Diameter (D) | 100.00 mm (3.937 inch) |
| Total Width (T) | 27.00 mm (1.063 inch) |
| Weight | 0.92 kg (2.03 lb) |
| Bearing Material | Case Carburized Steel |
| Cage Material | Pressed Steel Cage |
Note: Dimensional data is based on manufacturer published specifications from SKF, FAG, TIMKEN, 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: DWB2504
OE Numbers:
31309
Reference Numbers (Interchange):
SKF: 31309, 31309CL7A, 31309J2QCL7A, 31309WM024
FAG: 31309A, 31309DY
TIMKEN: 31309, 31309M
NTN: 31309D, 31309U, 4T30309D
KOYO: 30309D, 30309DJR, 31309JR
NSK-RHP: 30309D, 31309, HR30309DJ
NACHI: E30309DJ
SNR: 31309, 31309V
TRIPLE FIVE: 30309DJ
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 31309, FAG 31309A, TIMKEN 31309, and NTN 31309D.
- Available for product customization – logo, code, pattern, or words can be applied to the bearing or packaging.
Installation Notes
- Confirm bore diameter (45.00 mm) and outer diameter (100.00 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
