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KOYO 6228ZZXC3 Deep Groove Ball Bearings
KOYO 6228ZZXC3 single-row deep groove ball bearing – shielded (zzx). Bore 140mm x OD 250mm x width 42mm. Dynamic load rating 208 kN. C3 internal clearance.
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| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6228 |
| Inner Diameter (Bore) | 140 mm |
| Outer Diameter | 250 mm |
| Width | 42 mm |
| Seal Type | ZZX |
| Material | Chrome Steel (AISI 52100) |
| Clearance | C3 |
| Dynamic Load Rating (Cr) | 208000 N (208 kN) |
| Static Load Rating (C₀) | 150000 N |
| Limiting Speed (Grease) | 2400 rpm |
| Limiting Speed (Oil) | 2900 rpm |
| Fillet Radius (r min) | 3 mm |
| Fatigue Load Limit (Cu) | 8.65 kN |
| Weight | 7.45 kg |
The KOYO 6228ZZXC3 is a single-row deep groove ball bearing with double metal shields (ZZX) – measuring 140mm bore x 250mm outside diameter x 42mm width.
Load ratings: dynamic 208 kN (Cr) and static 150 kN (C0r) – fatigue load limit 8.65 kN. Limiting speed 2400 rpm with grease lubrication and 2900 rpm with oil lubrication. Minimum fillet radius 3mm.
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 metal shields retain the factory-filled grease and keep out dust and debris while allowing higher speeds than a contact seal.
C3 internal clearance: this bearing is supplied with greater than normal (CN) internal radial clearance. C3 suits applications with an interference fit on the shaft or in the housing – a temperature differential between the inner and outer rings – or shaft expansion under load – where the extra clearance prevents the bearing from becoming preloaded in service.
Manufactured by KOYO (JTEKT) in chrome steel to ISO standards.
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