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NACHI 6308ZZEC3 Deep Groove Ball Bearings
NACHI 6308ZZEC3 deep groove ball bearing. 40mm ID x 90mm OD x 23mm width. ZZE with C3 clearance. Chrome steel construction.
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- C3 clearance accommodates thermal expansion in hot-running applications
- Chrome steel (AISI 52100) rings and balls for durability and fatigue resistance
- Conforms to ISO dimension standards and interchanges with equivalent series
- Double metal shields (ZZE) protect against dust and debris on both sides while retaining the factory-filled grease
- Handles both radial and moderate axial loads in either direction
- High-speed capability with low noise and vibration
- Operating temperature range: -25°C to +120°C (standard grease)
- Pre-lubricated with high-performance grease - ready to install
| Brand | NACHI |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6308 |
| Inner Diameter (Bore) | 40 mm |
| Outer Diameter | 90 mm |
| Width | 23 mm |
| Seal Type | ZZE |
| Material | Chrome Steel (AISI 52100) |
| Clearance | C3 |
| Dynamic Load Rating (Cr) | 40500 N (40.5 kN) |
| Static Load Rating (C₀) | 24100 N |
| Limiting Speed (Grease) | 7800 rpm |
| Limiting Speed (Oil) | 9200 rpm |
| Fillet Radius (r min) | 1.5 mm |
| Weight | 0.633 kg |
| Features & Benefits | C3 clearance accommodates thermal expansion in hot-running applications Chrome steel (AISI 52100) rings and balls for durability and fatigue resistance Conforms to ISO dimension standards and interchanges with equivalent series Double metal shields (ZZE) protect against dust and debris on both sides while retaining the factory-filled grease Handles both radial and moderate axial loads in either direction High-speed capability with low noise and vibration Operating temperature range: -25°C to +120°C (standard grease) Pre-lubricated with high-performance grease - ready to install |
NACHI 6308ZZEC3 Deep Groove Ball Bearings
The NACHI 6308ZZEC3 is a high-quality single-row deep groove ball bearing engineered to deliver reliable performance across a broad spectrum of industrial and commercial applications. With a bore diameter of 40 mm, outer diameter of 90 mm, and a width of 23 mm, this bearing conforms to ISO dimension standards and is a direct interchange for equivalent series bearings from other manufacturers.
Design & Construction
Manufactured by NACHI – one of Japan’s leading bearing producers – the 6308ZZEC3 is precision-ground from high-carbon chromium bearing steel (AISI 52100 / JIS SUJ2), heat-treated to achieve optimum hardness and fatigue resistance. The deep raceway grooves in both the inner and outer rings enable the bearing to support radial loads as well as moderate axial loads in either direction. Double metal shields (ZZE) protect against dust and debris on both sides while retaining the factory-filled grease.
Performance
Rated for a basic dynamic load capacity of 40.5 kN and a static load capacity of 24.1 kN, this bearing delivers dependable load-carrying ability and long calculated service life under correct operating conditions. Permissible speeds reach 7,800 rpm with grease lubrication and 9,200 rpm with oil lubrication, making it well suited to high-speed rotating equipment. This variant features C3 internal clearance – a wider-than-standard radial play that accommodates thermal expansion in elevated-temperature environments such as electric motors, dryers, and heat-intensive machinery.
Typical Applications
- Electric motors, generators, and alternators
- Pumps, compressors, and blowers
- Conveyor and material-handling systems
- Agricultural and farming equipment
- Power tools and woodworking machinery
- Automotive ancillaries – water pumps, tensioners, idlers
- HVAC fans, air-conditioning units, and refrigeration
- Food and beverage processing machinery
- Gearboxes, reducers, and transmission assemblies
- General industrial and workshop machinery
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