6311 Bearing
Deep groove ball bearing
- Bore d55 mm
- Outer dia. D120 mm
- Width B29 mm
- Weight≈ 1.4 kg
High-speed applications such as electric motors, pumps, fans and gear reducers.
Technical data
| Bearing designation | 6311 |
|---|---|
| Type | Deep groove ball bearing |
| Bore d | 55 mm |
| Outer dia. D | 120 mm |
| Width B | 29 mm |
| Weight | ≈ 1.4 kg |
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for 6311
| 6311 | Standard design (open, normal clearance) |
|---|---|
| 6311-2RS | Rubber seals on both sides (sealed), greased |
| 6311-ZZ | Metal shields on both sides (dust shields) |
| 6311 C3 | Radial clearance larger than normal (for higher operating temperatures) |
| 6311-2RS C3 | Rubber seals on both sides (sealed), greased · Radial clearance larger than normal (for higher operating temperatures) |
| 6311-ZZ C3 | Metal shields on both sides (dust shields) · Radial clearance larger than normal (for higher operating temperatures) |
| 6311-Z | Metal shield on one side |
| 6311-RS | Rubber seal on one side |
| 6311 NR | Snap ring groove in the outer ring, with snap ring |
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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