QJ304 Bearing
Four-point contact ball bearing
- Bore d20 mm
- Outer dia. D52 mm
- Width B15 mm
- Weight≈ 0.17 kg
High axial loads in both directions: compressors, gearboxes and pump shafts.
Technical data
| Bearing designation | QJ304 |
|---|---|
| Type | Four-point contact ball bearing |
| Bore d | 20 mm |
| Outer dia. D | 52 mm |
| Width B | 15 mm |
| Weight | ≈ 0.17 kg |
Designation meaning and notes
- Four-point contact; split inner ring.
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for QJ304
| QJ304 MA | Machined brass cage, outer ring guided |
|---|
Click a designation to open it in the bearing finder. Suffix usage can differ slightly between brands.
Matching seal (radial shaft seal)
20 × 52 × 7 mm
Seal weight: ≈ 0.017 kg
Other common widths: 20 × 52 × 10 mm
The seal's inner diameter matches the shaft (20 mm) and its outer diameter matches the housing bore (52 mm); the width depends on the space in the housing. NBR (double lip, TC type) is recommended for general use and FKM (Viton) for high temperatures.
Quote for bearing and sealAll seal sizes and matching bearings →