71926 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71926 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71926 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined loads, this bearing simultaneously handles significant radial loads and substantial axial loads in one direction. Its extra light preload (Class A) and P4A super-precision tolerance class ensure minimal runout and vibration, making it ideal for high-speed spindle applications. The combination of ceramic balls and phenolic resin cage contributes to reduced friction, lower operating temperatures, and superior high-speed performance.
Model Code Detailed Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with 25° contact angle |
| D | High-precision bearing with optimized internal geometry |
| GA | Universal Matchable bearing designed for preloaded sets |
| HC | Hybrid Ceramic construction with ceramic balls and steel rings |
| P4A | Super-precision tolerance class exceeding ABEC 7 standards |
71926 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) provides superior performance characteristics including reduced centrifugal forces, lower friction coefficients, and enhanced stiffness. This construction enables higher limiting speeds (7,500 rpm) and extended service life in demanding applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing ensures exceptional running accuracy and minimal vibration. The 25° contact angle optimizes axial load capacity while maintaining excellent radial load performance.
Advanced Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio, reduced friction, and superior performance at high speeds. This lightweight cage material contributes to lower inertial forces and improved dynamic response.
Universal Matching Capability: Designed as Universal Matchable (SU) bearings, these units can be supplied in preloaded sets of 3 bearings, ensuring optimal stiffness and precision in multi-bearing arrangements.
71926 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- High-Speed Motors: Precision servo motors, spindle motors, and high-frequency applications
- Aerospace Systems
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and inspection equipment
