71907 ACE/HCP4ADBAGMM2
Hybrid Ceramic Super Precision Bearings
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71907 ACE/HCP4ADBAGMM2 Bearing Product Overview & Core Advantages
The 71907 ACE/HCP4ADBAGMM2 is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. This duplex back-to-back (DB) matched set features an extra light preload (Class A) and is manufactured to ABEC 7 / P4A tolerance class, ensuring minimal runout and superior rotational precision. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high rigidity, making it ideal for high-precision spindles and other critical machinery components. The use of ceramic balls reduces centrifugal forces, enabling higher limiting speeds and providing electrical insulation.
71907 ACE/HCP4ADBAGMM2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Bearing series and size designation (35mm bore, 55mm OD, 20mm width) |
| ACE | 25° contact angle, high precision design |
| HC | Hybrid Ceramic (steel rings with ceramic balls) |
| P4A | ABEC 7 / ISO P4A tolerance class for high precision |
| DB | Duplex Back-to-Back mounting arrangement |
| AGMM2 | Precision matched set of 2 bearings with specific axial clearance |
71907 ACE/HCP4ADBAGMM2 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and provides stable support for spindles. The 25° contact angle optimizes the bearing's ability to handle combined radial and axial loads simultaneously.
High-Speed Performance: The combination of ceramic balls (Si3N4) and phenolic resin cage enables exceptional high-speed operation. Ceramic balls reduce centrifugal forces and provide lower thermal expansion, while the lightweight phenolic cage ensures minimal friction at limiting speeds up to 56,000 rpm.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
Temperature Stability: The hybrid ceramic construction provides superior performance across the operating temperature range of -30°C to 110°C, maintaining dimensional stability under thermal variations.
71907 ACE/HCP4ADBAGMM2 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Electric spindle motors, high-frequency motors, and precision servo drives
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and laboratory instrumentation
- Semiconductor Manufacturing: Wafer handling equipment, precision positioning stages
- Test & Measurement: Coordinate measuring machines and precision rotary tables
