3311 Bearing
Double row angular contact ball bearing
- Bore d55 mm
- Outer dia. D120 mm
- Width B49.2 mm
- Weight≈ 2.3 kg
Radial plus axial loads in both directions: pumps, compressors, clutches and wheel bearings.
Technical data
| Bearing designation | 3311 |
|---|---|
| Type | Double row angular contact ball bearing |
| Bore d | 55 mm |
| Outer dia. D | 120 mm |
| Width B | 49.2 mm |
| Weight | ≈ 2.3 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 3311
| 3311 A | Modified internal design |
|---|---|
| 3311 A-2RS | Modified internal design · Rubber seals on both sides (sealed), greased |
| 3311 A-2Z | Modified internal design · Metal shields on both sides (dust shields) |
| 3311 ATN9 | Modified internal design · Glass-fibre reinforced polyamide cage |
Click a designation to open it in the bearing finder. Suffix usage can differ slightly between brands.
Matching seal (radial shaft seal)
55 × 120 × 10 mm
Seal weight: ≈ 0.099 kg
Other common widths: 55 × 120 × 8 mm, 55 × 120 × 12 mm
The seal's inner diameter matches the shaft (55 mm) and its outer diameter matches the housing bore (120 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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