1311 Bearing
Self-aligning ball bearing
- Bore d55 mm
- Outer dia. D120 mm
- Width B29 mm
- Weight≈ 1.5 kg
Light to medium loads with shaft deflection or misalignment.
Technical data
| Bearing designation | 1311 |
|---|---|
| Type | Self-aligning ball bearing |
| Bore d | 55 mm |
| Outer dia. D | 120 mm |
| Width B | 29 mm |
| Weight | ≈ 1.5 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 1311
| 1311 K | Tapered bore, taper 1:12 |
|---|---|
| 1311 ETN9 | Reinforced internal design (higher load capacity) · Glass-fibre reinforced polyamide cage |
| 1311 C3 | Radial clearance larger than normal (for higher operating temperatures) |
| 1311 K C3 | Tapered bore, taper 1:12 · Radial clearance larger than normal (for higher operating temperatures) |
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.
Quote for bearing and sealAll seal sizes and matching bearings →
Matching sleeve
H 311 · shaft 50 mm
Adapter sleeve H 311: shaft diameter 50 mm, bearing bore 55 mm, width 45 mm. Used with lock nut KM11 and lock washer MB11.
H 311 set weight (incl. lock nut and lock washer): ≈ 0.35 kg
A sleeve mounts a tapered-bore bearing on a plain cylindrical shaft and bridges the difference between the bearing bore and the shaft diameter.
Use with a sleeve requires the tapered-bore version of the bearing: 1311 K.
Quote for bearing and sleeve