6304 ZNR Wheel Bearing
The DUHUI Bearing 6304 ZNR deep groove ball bearing is a standard replacement component for industrial and automotive applications requiring a 20×52×15 mm bearing. This single-row ball bearing features a snap ring groove (NR) on the outer ring for axial positioning, eliminating the need for separate retaining rings. Manufactured to original equipment specifications including 6304 ZNR, this bearing delivers dependable performance for compatible applications.
Technical Specifications
| Specification | mm | inch |
|---|---|---|
| DH Code | DWB3565 | |
| Part Number | 6304 ZNR | |
| Product Type | Deep Groove Ball Bearing | |
| Row Type | Single Row | |
| Bore Diameter (d) | 20.00 mm | 0.787 in |
| Outside Diameter (D) | 52.00 mm | 2.047 in |
| Width (B) | 15.00 mm | 0.591 in |
| Snap Ring Groove | NR (Snap Ring Groove on Outer Ring) | |
| Dynamic Load Rating (Cr) | 15,900 N | |
| Static Load Rating (C0r) | 7,800 N | |
| Limiting Speed – Grease | 12,000 rpm | |
| Weight | 0.14 kg | |
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: DWB3565
OE Numbers:
6304 ZNR
Reference Numbers (Interchange):
6304NR
Vehicle Fitment
Application Type: This 6304 ZNR bearing is a standard deep groove ball bearing used across multiple vehicle platforms and industrial applications.
Typical applications include: Electric motors, pumps, gearboxes, automotive transmissions, agricultural equipment, and general industrial machinery requiring a 20×52×15 mm bearing with snap ring groove.
Please verify OE number, dimensions and application requirements before ordering.
Product Features
- Deep groove ball bearing design accommodates both radial and moderate axial loads in either direction.
- Snap ring groove (NR) on the outer ring allows for axial positioning and eliminates the need for separate retaining rings.
- Manufactured from high-carbon chromium bearing steel for durability under load.
- Precision-ground raceways ensure smooth rotation and long service life.
- Interchangeable with standard 6304NR bearings.
Installation Notes
- Confirm bore diameter is 20.00 mm (0.787 in), outside diameter is 52.00 mm (2.047 in), and width is 15.00 mm (0.591 in) before installation.
- This bearing is supplied with a snap ring groove – ensure the corresponding snap ring is correctly installed if axial positioning is required.
- Press the bearing onto the shaft or into the housing using appropriate tools – never strike with a hammer.
- Apply force only to the ring being fitted (inner ring for shaft mounting, outer ring for housing mounting).
- Inspect the shaft and housing surfaces for damage or wear before installing new components.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive and industrial bearing supplier established in Zhejiang, China, in 2003. DUHUI produces deep groove ball bearings and automotive components to OE specifications. Contact us
