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KOYO 6311-2RS Deep Groove Ball Bearings
KOYO 6311-2RS single-row deep groove ball bearing – contact sealed (2rs). Bore 55mm x OD 120mm x width 29mm. Dynamic load rating 89.5 kN.
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- Bore 55mm x OD 120mm x width 29mm
- Carries radial and axial loads in both directions
- Contact rubber seals give superior protection against dust - dirt and moisture
- Dynamic load rating 89.5 kN - static 45.0 kN
- KOYO (JTEKT) chrome steel quality
- Single-row deep groove ball bearing - Contact Sealed (2RS)
| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6311 |
| Inner Diameter (Bore) | 55 mm |
| Outer Diameter | 120 mm |
| Width | 29 mm |
| Seal Type | 2RS |
| Material | Chrome Steel (AISI 52100) |
| Clearance | CN |
| Dynamic Load Rating (Cr) | 89500 N (89.5 kN) |
| Static Load Rating (C₀) | 45000 N |
| Limiting Speed (Grease) | 3700 rpm |
| Fillet Radius (r min) | 2 mm |
| Fatigue Load Limit (Cu) | 3.45 kN |
| Weight | 1.37 kg |
| Features & Benefits | Bore 55mm x OD 120mm x width 29mm Carries radial and axial loads in both directions Contact rubber seals give superior protection against dust - dirt and moisture Dynamic load rating 89.5 kN - static 45.0 kN KOYO (JTEKT) chrome steel quality Single-row deep groove ball bearing - Contact Sealed (2RS) |
The KOYO 6311-2RS is a single-row deep groove ball bearing with double contact rubber seals (2RS) – measuring 55mm bore x 120mm outside diameter x 29mm width.
Load ratings: dynamic 89.5 kN (Cr) and static 45.0 kN (C0r) – fatigue load limit 3.45 kN. Limiting speed 3700 rpm with grease lubrication. Minimum fillet radius 2mm.
Deep groove ball bearings are the most widely used bearing type – carrying radial and axial loads in both directions with low friction and high running accuracy. The double contact rubber seals give superior protection against dust – dirt and moisture for contaminated environments – and retain the factory-filled grease for life.
Manufactured by KOYO (JTEKT) in chrome steel to ISO standards.
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