QJ306 Bearing
Four-point contact ball bearing
- Bore d30 mm
- Outer dia. D72 mm
- Width B19 mm
- Weight≈ 0.4 kg
High axial loads in both directions: compressors, gearboxes and pump shafts.
Technical data
| Bearing designation | QJ306 |
|---|---|
| Type | Four-point contact ball bearing |
| Bore d | 30 mm |
| Outer dia. D | 72 mm |
| Width B | 19 mm |
| Weight | ≈ 0.4 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 QJ306
| QJ306 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)
30 × 72 × 10 mm
Seal weight: ≈ 0.036 kg
Other common widths: 30 × 72 × 8 mm, 30 × 72 × 12 mm
The seal's inner diameter matches the shaft (30 mm) and its outer diameter matches the housing bore (72 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.
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