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KOYO 6812ZZC3 Deep Groove Ball Bearings
KOYO 6812ZZC3 single-row deep groove ball bearing – shielded (zz). Bore 60mm x OD 78mm x width 10mm. Dynamic load rating 14.3 kN. C3 internal clearance.
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| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6812 |
| Inner Diameter (Bore) | 60 mm |
| Outer Diameter | 78 mm |
| Width | 10 mm |
| Seal Type | ZZ |
| Material | Chrome Steel (AISI 52100) |
| Clearance | C3 |
| Dynamic Load Rating (Cr) | 14300 N (14.3 kN) |
| Static Load Rating (C₀) | 10600 N |
| Limiting Speed (Grease) | 8000 rpm |
| Limiting Speed (Oil) | 9400 rpm |
| Fillet Radius (r min) | 0.3 mm |
| Fatigue Load Limit (Cu) | 0.550 kN |
| Weight | 0.104 kg |
The KOYO 6812ZZC3 is a single-row deep groove ball bearing with double metal shields (ZZ) – measuring 60mm bore x 78mm outside diameter x 10mm width.
Load ratings: dynamic 14.3 kN (Cr) and static 10.6 kN (C0r) – fatigue load limit 0.550 kN. Limiting speed 8000 rpm with grease lubrication and 9400 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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