108WA
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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108WA Bearing Product Overview & Core Advantages
The 108WA is a metric double row angular contact ball bearing designed for applications requiring high precision and reliability. This bearing excels at simultaneously handling combined loads, including significant radial loads and moderate axial loads in both directions. Its compact design, with a 7 mm width, makes it ideal for space-constrained assemblies. Manufactured from high-grade chrome steel and featuring a nylon cage, it offers excellent performance for high-speed operation up to 40,000 rpm and reliable service within a wide temperature range.
108WA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 108 | Standard bearing designation code indicating specific bearing dimensions (8mm bore, 22mm OD). |
| W | Designates a specific internal design and construction. |
| A | Indicates a 30-degree contact angle, optimized for carrying combined loads. |
| (No Seal Suffix) | The bearing is open (no seals or shields), allowing for higher speeds and custom lubrication schemes. |
108WA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior rigidity and enables the bearing to support substantial radial dynamic load ratings of 596 lbf and static load ratings of 126 lbf, effectively managing combined loads.
- Optimized High-Speed Performance: The lightweight nylon cage (polyamide) ensures stable operation and reduced friction, contributing directly to the high limiting speed of 40,000 rpm.
- Precision Engineering: Manufactured with tight dimensional tolerances (e.g., bore: -0.008mm to 0) and a standard CN radial internal clearance, this precision bearing ensures smooth, quiet, and accurate rotation.
- Material Integrity: Components made from chrome steel offer high hardness, wear resistance, and durability for long service life.
108WA Bearing Typical Application Areas
The 108WA is engineered for demanding applications across various industries, including:
- Precision Electric Motors and Small Spindles
- High-Speed Automation Equipment and Robotics
- Office Machinery and Precision Instruments
- Medical Devices and Dental Handpieces
- Pumps and Gearboxes requiring compact bearing dimensions
