61805 TN9
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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61805 TN9 Bearing Product Overview & Core Advantages
The 61805 TN9 is a single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. This metric bearing features an open design without seals, allowing for optimal lubrication flexibility. Its compact dimensions (25mm bore, 37mm OD, 7mm width) make it ideal for space-constrained assemblies. Engineered with chrome steel rings and balls combined with a nylon cage, it delivers excellent radial load capacity (980 lbf dynamic) and smooth operation at high limiting speeds up to 24,000 rpm. Manufactured to ABEC 1 | ISO P0 tolerance standards with CN radial clearance, it ensures consistent performance in demanding industrial environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 61805 | Standard deep groove ball bearing series with 25mm bore diameter |
| TN9 | Nylon cage, glass fiber reinforced, suitable for high-speed applications |
61805 TN9 Bearing Structural Features & Performance Benefits
Optimized Cage Design: The TN9 nylon cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling higher rotational speeds while maintaining dimensional stability across the operating temperature range.
Precision Engineering: Manufactured to ABEC 1 | ISO P0 tolerance class with CN radial internal clearance, this bearing ensures smooth operation and minimal vibration, critical for precision applications.
Material Excellence: Constructed from chrome steel for both rings and balls, delivering superior hardness, wear resistance, and fatigue life under radial dynamic loads up to 980 lbf.
Open Design Advantage: The unsealed construction allows for custom lubrication solutions and efficient heat dissipation, supporting operation within a broad temperature range of -30°C to 120°C.
61805 TN9 Bearing Typical Application Areas
- Electric Motors: Small to medium-sized motors requiring high-speed capability and reliable radial load support
- Precision Instruments: Medical devices, optical equipment, and measuring instruments where low vibration and precise rotation are critical
- Industrial Pumps: Centrifugal and circulation pumps benefiting from the bearing's high-speed performance and radial load capacity
- Office Automation Equipment: Printers, scanners, and copiers requiring compact dimensions and smooth operation
- Automotive Components: Auxiliary systems, alternators, and small transmission applications where space and weight are constraints
