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KOYO 6328ZZXC3 Deep Groove Ball Bearings
KOYO 6328ZZXC3 single-row deep groove ball bearing – shielded (zzx). Bore 140mm x OD 300mm x width 62mm. Dynamic load rating 316 kN. C3 internal clearance.
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| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6328 |
| Inner Diameter (Bore) | 140 mm |
| Outer Diameter | 300 mm |
| Width | 62 mm |
| Seal Type | ZZX |
| Material | Chrome Steel (AISI 52100) |
| Clearance | C3 |
| Dynamic Load Rating (Cr) | 316000 N (316 kN) |
| Static Load Rating (C₀) | 246000 N |
| Limiting Speed (Grease) | 2100 rpm |
| Limiting Speed (Oil) | 2500 rpm |
| Fillet Radius (r min) | 4 mm |
| Fatigue Load Limit (Cu) | 15.6 kN |
| Weight | 19.4 kg |
The KOYO 6328ZZXC3 is a single-row deep groove ball bearing with double metal shields (ZZX) – measuring 140mm bore x 300mm outside diameter x 62mm width.
Load ratings: dynamic 316 kN (Cr) and static 246 kN (C0r) – fatigue load limit 15.6 kN. Limiting speed 2100 rpm with grease lubrication and 2500 rpm with oil lubrication. Minimum fillet radius 4mm.
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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