71803 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71803 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71803 ACDGB/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under a P4 tolerance class, this metric bearing excels in handling combined loads with its optimized 25° contact angle. Its compact design (17mm bore × 26mm OD × 5mm width) makes it ideal for space-constrained, high-speed applications up to 103,000 rpm. The Universal Matchable (SU) designation allows for precise axial preload control when mounted in pairs, delivering superior performance in demanding operational environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71803 | Basic bearing designation with 17mm bore diameter |
| AC | Angular Contact design with 25° contact angle |
| DGB | Universal Matchable bearing for duplex mounting |
| P4 | High-precision tolerance class for superior running accuracy |
71803 ACDGB/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4 tolerance standards with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for high-speed applications.
Optimized Load Capacity: The 25° contact angle provides excellent performance for combined radial and axial loads, with dynamic load rating of 497 lbf and static load rating of 344 lbf.
High-Speed Capability: Features a phenolic resin cage that reduces centrifugal forces and friction, enabling operation at limiting speeds up to 103,000 rpm.
Premium Material Construction: Manufactured from chrome steel for both rings and balls (2.381mm diameter × 18 balls), providing excellent durability and wear resistance in demanding environments.
71803 ACDGB/P4 Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and precision grinding equipment
- Medical equipment and dental handpieces demanding quiet operation
- Aerospace components and instrumentation requiring reliable performance
- Robotics and automation systems where compact design and accuracy are critical
