108 TN9/C3
Miniature Self-Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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108 TN9/C3 Bearing Product Overview & Core Advantages
The 108 TN9/C3 is a metric double row angular contact ball bearing engineered for applications requiring high precision and reliable performance. This bearing features an open design with optimized internal geometry that enables it to handle significant combined loads—both radial and axial forces—simultaneously. Its compact dimensions (8mm bore, 22mm OD, 7mm width) make it ideal for space-constrained assemblies while maintaining high rigidity through its double row ball construction. Pre-lubricated and featuring a nylon cage (TN9), it delivers smooth operation across a broad temperature range (-30° to 110°C), making it a versatile solution for demanding industrial environments.
108 TN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 108 | Basic bearing designation | Defines standard dimensions: 8mm bore, 22mm OD, 7mm width |
| TN9 | Nylon cage, glass fiber reinforced | Enables high-speed operation (up to 40,000 rpm), reduces friction and weight |
| C3 | Greater than normal radial internal clearance | Accommodates thermal expansion in high-temperature applications |
108 TN9/C3 Bearing Structural Features & Performance Benefits
Double Row Design: The two rows of balls provide enhanced stiffness and load capacity, making this bearing exceptionally resistant to deflection under combined loading conditions. This design significantly improves positioning accuracy in precision applications.
Optimized Load Distribution: Engineered contact angles allow the bearing to efficiently handle radial loads (596 lbf dynamic rating) while simultaneously accommodating axial loads from both directions, eliminating the need for complex bearing arrangements.
High-Speed Capability: The TN9 nylon cage contributes to superior high-speed performance through reduced mass and excellent sliding properties, while the pre-applied lubrication ensures consistent operation at the maximum limiting speed of 40,000 rpm.
Precision Manufacturing: Manufactured from chrome steel with tight dimensional tolerances, the bearing delivers consistent performance and long service life in demanding applications.
108 TN9/C3 Bearing Typical Application Areas
- Precision spindles in small electric motors and dental handpieces
- Industrial pumps and compact gearboxes requiring high-speed operation
- Office automation equipment including printers, scanners, and copiers
- Medical devices and laboratory instrumentation where reliability is critical
- Small machinery with space constraints but demanding performance requirements
