71907 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71907 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71907 ACDGA/HCP4A is a single-row angular contact ball bearing engineered for ultra-high precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to handle significant axial loads in one direction while supporting radial loads, making it ideal for demanding applications. The combination of ceramic balls and phenolic cage enables superior high-speed performance and reduced rotational inertia.
71907 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing designation (35mm bore, 55mm OD, 10mm width) |
| AC | Angular Contact design with 25° contact angle |
| D | High precision bearing |
| GA | Universal Matchable (SU) bearing in a set of 3 |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4A | Ultra-precision tolerance class exceeding ABEC 7 |
71907 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with silicon nitride ceramic balls provides superior performance characteristics including reduced friction, higher speed capability, and extended service life. Ceramic balls are electrically insulating and provide excellent corrosion resistance.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, critical for high-precision applications. The tight dimensional tolerances (-0.004mm to 0 on bore and OD) guarantee consistent performance and precise fitment.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the impressive limiting speed of 56,000 rpm. The lightweight construction reduces centrifugal forces, enabling stable high-speed rotation.
Universal Matching Design: As a Universal Matchable (SU) bearing supplied in sets of three, these bearings can be arranged in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for stiffness and load capacity.
71907 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional accuracy and speed
- High-Speed Motors: Electric motors and spindles operating at elevated rotational speeds
- Precision Instrumentation: Medical equipment, measuring devices, and laboratory instruments
- Aerospace Systems: Guidance systems, gyroscopes, and other critical aerospace components
- Semiconductor Manufacturing: Wafer processing equipment and precision positioning systems
