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KOYO 6905ZZC3 Deep Groove Ball Bearings
KOYO 6905ZZC3 single-row deep groove ball bearing – shielded (zz). Bore 25mm x OD 42mm x width 9mm. Dynamic load rating 8.75 kN. C3 internal clearance.
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| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6905 |
| Inner Diameter (Bore) | 25 mm |
| Outer Diameter | 42 mm |
| Width | 9 mm |
| Seal Type | ZZ |
| Material | Chrome Steel (AISI 52100) |
| Clearance | C3 |
| Dynamic Load Rating (Cr) | 8750 N (8.75 kN) |
| Static Load Rating (C₀) | 4550 N |
| Limiting Speed (Grease) | 16000 rpm |
| Limiting Speed (Oil) | 19000 rpm |
| Fillet Radius (r min) | 0.3 mm |
| Fatigue Load Limit (Cu) | 0.230 kN |
| Weight | 0.041 kg |
The KOYO 6905ZZC3 is a single-row deep groove ball bearing with double metal shields (ZZ) – measuring 25mm bore x 42mm outside diameter x 9mm width.
Load ratings: dynamic 8.75 kN (Cr) and static 4.55 kN (C0r) – fatigue load limit 0.230 kN. Limiting speed 16000 rpm with grease lubrication and 19000 rpm with oil lubrication. Minimum fillet radius 0.3mm.
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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