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NACHI 6911ZZ Deep Groove Ball Bearings
NACHI 6911ZZ deep groove ball bearing. 55mm ID x 80mm OD x 13mm width. ZZ. Chrome steel construction.
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- 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 (ZZ) 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
- Standard CN clearance suits most general-purpose installations
| Brand | NACHI |
|---|---|
| Bearing Type | Deep Groove Ball Bearings |
| Series | 6911 |
| Inner Diameter (Bore) | 55 mm |
| Outer Diameter | 80 mm |
| Width | 13 mm |
| Seal Type | ZZ |
| Material | Chrome Steel (AISI 52100) |
| Clearance | CN |
| Dynamic Load Rating (Cr) | 16000 N (16 kN) |
| Static Load Rating (C₀) | 13200 N |
| Limiting Speed (Grease) | 8200 rpm |
| Limiting Speed (Oil) | 9600 rpm |
| Fillet Radius (r min) | 1 mm |
| Weight | 0.177 kg |
| Features & Benefits | 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 (ZZ) 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 Standard CN clearance suits most general-purpose installations |
NACHI 6911ZZ Deep Groove Ball Bearings
The NACHI 6911ZZ 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 55 mm, outer diameter of 80 mm, and a width of 13 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 6911ZZ 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 (ZZ) protect against dust and debris on both sides while retaining the factory-filled grease.
Performance
Rated for a basic dynamic load capacity of 16.0 kN and a static load capacity of 13.2 kN, this bearing delivers dependable load-carrying ability and long calculated service life under correct operating conditions. Permissible speeds reach 8,200 rpm with grease lubrication and 9,600 rpm with oil lubrication, making it well suited to high-speed rotating equipment. Supplied with standard CN internal clearance, this bearing is suited to the widest range of general-purpose applications.
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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