S71907 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71907 ACD/HCP4A Bearing Product Overview & Core Advantages
The S71907 ACD/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This sealed bearing features a single matched arrangement with preload applied, delivering superior rotational accuracy and system rigidity. Its optimized design enables it to handle combined loads efficiently, making it an ideal choice for high-performance spindles and precision machinery where high rigidity and high-speed capability are paramount.
S71907 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings |
| 1907 | Bore diameter: 35 mm, Outside diameter: 55 mm, Width: 10 mm |
| ACD | Contact angle of 25° |
| HC | Hybrid Ceramic: Ceramic balls with steel rings |
| P4 | Tolerance class P4 (ABEC-7), indicating very high precision |
| A | Preload level |
S71907 ACD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds and extended service life.
High Rigidity & Load Capacity: The 25° contact angle and preload provide excellent stiffness, allowing the bearing to effectively support combined radial and axial loads.
Superior High-Speed Performance: The lightweight phenolic cage and low-density ceramic balls minimize centrifugal forces, contributing to the high limiting speed of 28,000 rpm.
Sealed & Lubricated for Longevity: The integral seals protect against contamination, and the factory-applied lubrication ensures consistent performance within the specified temperature range of -30°C to 110°C, reducing maintenance needs.
S71907 ACD/HCP4A Bearing Typical Application Areas
The S71907 ACD/HCP4A is engineered for high-demand applications, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Dental and Medical Handpieces
- Robotic Drives and Servo Motors
