71808 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71808 CDGA/P4 Bearing Product Overview & Core Advantages
The 71808 CDGA/P4 is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing with Extra Light (A) preload and P4 tolerance class, it delivers superior running accuracy, minimal heat generation, and high system rigidity. Its compact design with a 7 mm width makes it ideal for space-constrained, high-precision assemblies where reliability is paramount.
71808 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71808 | Basic bearing series and size designation (40 mm bore, 52 mm OD, 7 mm width) |
| C | 15° contact angle, optimized for high-speed applications and combined loads |
| D | Universal Matchable (SU) bearing, can be paired in sets for preload configurations |
| G | Pre-set Extra Light preload (Class A) for high rigidity and precise shaft positioning |
| A | Specific internal design for angular contact bearings with optimized geometry |
| /P4 | High-precision tolerance class for applications requiring extreme running accuracy |
71808 CDGA/P4 Bearing Structural Features & Performance Benefits
This bearing's performance stems from its precision-engineered construction. The phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing to the impressive limiting speed of 56,000 rpm. The 15° contact angle is optimized to handle combined radial and axial loads simultaneously. Manufactured to P4 tolerance standards with tight dimensional control on bore, OD, and width, it guarantees superior running accuracy. The universal matching (SU) design allows for flexible arrangement in sets of three to achieve specific preload and stiffness requirements without selective mounting.
71808 CDGA/P4 Bearing Typical Application Areas
- High-frequency machine tool spindles
- Precision grinding machine mandrels
- High-speed dental and medical handpieces
- Aerospace gyroscopes and instrumentation
- High-precision robotics and automation systems
