30304D Wheel Bearing
The DUHUI Bearing 30304D wheel bearing is a metric-series single-row tapered roller bearing designed for combined radial and axial load applications in transmissions, differentials, and wheel hubs. This OE-replacement component matches NSK 30304D, Timken 30304, and SKF 30304 specifications, delivering reliable performance for a range of automotive and industrial drivetrain applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWB2583 |
| Part Number | 30304D |
| Product Type | Single Row Tapered Roller Bearing – Metric Series |
| Inner Diameter (d) | 20.00 mm (0.787 inch) |
| Outer Diameter (D) | 52.00 mm (2.047 inch) |
| Total Width (T) | 16.25 mm (0.640 inch) |
| Cone Width (B) | 15.00 mm (0.591 inch) |
| Cup Width (C) | 13.00 mm (0.512 inch) |
| Chamfer Dimension (min) | 1.50 mm (0.059 inch) |
| Dynamic Load Rating (Cr) | 39.0 kN |
| Static Load Rating (Cor) | 32.5 kN |
| Grease Limit Speed | 7,100 rpm |
| Oil Limit Speed | 10,000 rpm |
| Weight | 0.168 kg (0.370 lb) |
Note: Dimensional data is based on published specifications. 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: DWB2583
OE Numbers:
30304D
Reference Numbers (Interchange):
NSK: 30304D
SKF: 30304
Timken: 30304
NTN: 4T-30304
Vehicle Fitment
This bearing is used in differentials, transmissions, and wheel hubs across multiple vehicle makes. Typical applications include:
NISSAN: Various models (verify OE number and dimensions before ordering)
TOYOTA: Various models (verify OE number and dimensions before ordering)
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Single-row tapered roller geometry handles combined radial and axial loads in one direction – suitable for differential and transmission applications.
- Metric-series configuration with 20 mm bore and 52 mm outer diameter matches NSK 30304D and SKF 30304 specifications.
- Interchangeable with major brands including NSK, SKF, Timken, and NTN equivalents.
- Separable cone and cup design simplifies installation and maintenance – inner ring with rollers can be mounted independently.
- Heat-treated bearing steel with precision-ground raceways delivers rated dynamic load of 39 kN and static load of 32.5 kN.
Installation Notes
- Confirm inner diameter (20.00 mm) and outer diameter (52.00 mm) match your existing bearing and housing before installation.
- Inspect the shaft and housing for wear or damage – replace if scoring or pitting is present.
- Set bearing preload according to vehicle manufacturer specifications – tapered rollers require proper adjustment for differential and hub applications.
- Lubricate with high-quality gear oil or grease – refer to your vehicle manual for viscosity grade and lubrication method.
- When paired with a second tapered roller bearing, apply preload according to manufacturer specifications to achieve rigid bearing support.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces tapered roller bearings and wheel bearings to OE specifications. Contact us
