Wheel Bearing 6304-ZNR
The DUHUI Bearing 6304-ZNR is a single-row deep groove ball bearing with a 20 mm bore, 52 mm outer diameter, and 15 mm width. This automotive wheel bearing features a single metal shield on one side and a snap ring groove on the outer ring for secure axial location in the housing. It matches OE specification 6304-ZNR and serves as a direct replacement for workshops, distributors, and B2B buyers requiring a reliable bearing solution for wheel hubs, electric motors, gearboxes, pumps, and industrial applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWB3658 |
| Part Number | 6304-ZNR |
| Product Type | Single Row Deep Groove Ball Bearing |
| Bore Diameter (d) | 20.00 mm (0.787 inch) |
| Outer Diameter (D) | 52.00 mm (2.047 inch) |
| Width (B) | 15.00 mm (0.591 inch) |
| Snap Ring OD | 57.70 mm (2.272 inch) |
| Snap Ring Width | 2.46 mm (0.097 inch) |
| Seals | Z – Single Metal Shield (One Side) |
| Snap Ring | Fitted on Outer Ring |
| Bearing Material | Steel |
| Cage Material | Sheet Metal |
| Weight | 0.14 – 0.15 kg |
| Dynamic Load Rating | 15.9 kN |
| Static Load Rating | 7.8 kN |
| Limiting Speed (Grease) | 15,000 rpm |
| Limiting Speed (Oil) | 18,000 rpm |
Note: Dimensional data is based on manufacturer published specifications from SKF 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: DWB3658
OE Numbers:
6304-ZNR
Reference Numbers (Interchange):
SKF: 6304-ZNR, 6304-ZNRJEM
NTN: 6304ZZNR
FAG: 6304 ZNR
NSK: 6304ZNR
KOYO: 6304ZNR
Vehicle Fitment
Please verify OE number, dimensions and vehicle configuration before ordering. Fitment data is not available for this part number.
Known OE References (Industrial):
SKF: 6304-ZNRJEM
SKF: 6304-ZNRMT33
Product Features
- Single-row deep groove ball bearing design supports radial loads and moderate axial loads in both directions. Simple and robust construction requires little maintenance.
- Z – single metal shield on one side provides contamination protection while maintaining low friction for high running speeds.
- Snap ring groove on the outer ring with fitted snap ring simplifies axial location in the housing, eliminating the need for additional positioning components.
- Manufactured to OE specifications with steel rings and balls, and a sheet metal cage for durability and fatigue resistance.
- Factory-lubricated and maintenance-friendly design.
- Available for product customization – logo, code, pattern, or words can be applied to the bearing or packaging.
Installation Notes
- Confirm bore diameter (20.00 mm) and outer diameter (52.00 mm) match your housing and shaft before installation.
- The snap ring is pre-fitted on the outer ring – verify the snap ring OD (57.70 mm) matches your housing groove dimensions.
- This bearing has a single metal shield on one side. The shield is non-removable and protects against contamination.
- Inspect the housing and shaft surfaces for wear or damage before installing new components.
- Apply even pressure when pressing the bearing into the housing – never apply force directly through the rolling elements. Do not use a hammer to strike the bearing.
- Bearing is factory-preserved with oil – if pre-lubricated grease is required, pack with appropriate grease before installation. Install in a clean environment to prevent contamination.
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
