61808-2RZ
618 & 619 Series Thin Section Bearings
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Main Dimensions
Performance
Materials
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61808-2RZ Bearing Product Overview & Core Advantages
The 61808-2RZ is a metric single row deep groove ball bearing designed for exceptional performance in compact spaces. Featuring integral contact seals (2RZ) and factory-preloaded grease lubrication, this bearing delivers reliable operation with minimal maintenance. Its P6 tolerance class ensures high running accuracy, making it ideal for applications demanding precise rotational characteristics. The combination of a stainless steel cage, optimized internal geometry, and effective sealing provides excellent high-speed capability (up to 13,000 rpm) and long service life under radial loads.
61808-2RZ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 61808 | Basic bearing designation: Metric deep groove ball bearing series with 40mm bore, 52mm OD, and 7mm width |
| 2RZ | Bearing seal type: Non-contact seals on both sides providing effective protection against contamination while maintaining low friction |
61808-2RZ Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The deep groove raceway design enables excellent performance under radial loads while accommodating moderate axial loads in both directions.
High-Speed Performance: The combination of stainless steel cage and optimized internal clearance (CN group) enables operation at limiting speeds up to 13,000 rpm.
Enhanced Protection System: The 2RZ non-contact seals effectively prevent lubricant leakage and exclude contaminants, extending bearing service life in demanding environments.
Precision Engineering: Manufactured to P6 tolerance class with tight dimensional control (bore tolerance: -0.01mm to 0), ensuring high running accuracy and consistent performance.
Maintenance-Free Operation: Factory-preloaded grease lubrication and effective sealing provide long-term reliable operation without additional maintenance requirements.
61808-2RZ Bearing Typical Application Areas
- Electric Motors: Small to medium-sized motors requiring high-speed operation and reliable sealing
- Precision Instruments: Medical devices, optical equipment, and measuring instruments demanding high accuracy
- Office Automation Equipment: Printers, scanners, and copiers where compact design and quiet operation are essential
- Automotive Components: Auxiliary systems, pumps, and small gearboxes requiring sealed bearing solutions
- Industrial Machinery: Small pumps, fans, and spindles operating at high speeds in contaminated environments
