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KOYO 6918ZZ Deep Groove Ball Bearings
KOYO 6918ZZ single-row deep groove ball bearing – shielded (zz). Bore 90mm x OD 125mm x width 18mm. Dynamic load rating 41.0 kN.
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- Bore 90mm x OD 125mm x width 18mm
- Carries radial and axial loads in both directions
- Dynamic load rating 41.0 kN - static 31.6 kN
- KOYO (JTEKT) chrome steel quality
- Metal shields retain grease and exclude dust - permitting higher speeds
- Single-row deep groove ball bearing - Shielded (ZZ)
| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6918 |
| Inner Diameter (Bore) | 90 mm |
| Outer Diameter | 125 mm |
| Width | 18 mm |
| Seal Type | ZZ |
| Material | Chrome Steel (AISI 52100) |
| Clearance | CN |
| Dynamic Load Rating (Cr) | 41000 N (41.0 kN) |
| Static Load Rating (C₀) | 31600 N |
| Limiting Speed (Grease) | 5100 rpm |
| Limiting Speed (Oil) | 6000 rpm |
| Fillet Radius (r min) | 1.1 mm |
| Fatigue Load Limit (Cu) | 1.60 kN |
| Weight | 0.565 kg |
| Features & Benefits | Bore 90mm x OD 125mm x width 18mm Carries radial and axial loads in both directions Dynamic load rating 41.0 kN - static 31.6 kN KOYO (JTEKT) chrome steel quality Metal shields retain grease and exclude dust - permitting higher speeds Single-row deep groove ball bearing - Shielded (ZZ) |
The KOYO 6918ZZ is a single-row deep groove ball bearing with double metal shields (ZZ) – measuring 90mm bore x 125mm outside diameter x 18mm width.
Load ratings: dynamic 41.0 kN (Cr) and static 31.6 kN (C0r) – fatigue load limit 1.60 kN. Limiting speed 5100 rpm with grease lubrication and 6000 rpm with oil lubrication. Minimum fillet radius 1.1mm.
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.
Manufactured by KOYO (JTEKT) in chrome steel to ISO standards.
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