S71907 ACEGA/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 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S71907 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This sealed bearing features a single, universal-matchable design with a P4A super-precision tolerance and an extra light preload (Class A). Its key advantage lies in its ability to handle combined loads efficiently, thanks to a 25° contact angle, while the ceramic balls and phenolic cage contribute to superior high-speed capabilities and reduced weight. This combination makes it ideal for high-reliability, high-rigidity applications.
S71907 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision angular contact ball bearing series.
- 1907: Standard dimension series; 35mm bore, 55mm OD, 10mm width.
- AC: 25° contact angle.
- EGA: Identifies the specific internal design, preload (Extra light / Class A), and tolerance class (P4A).
- HC: Hybrid Ceramic, indicating ceramic balls.
- P4A: Super precision tolerance class, exceeding ABEC 7/ISO P4.
S71907 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4A tolerance class with a controlled preload, this bearing provides exceptional rotational accuracy and system stiffness, minimizing deflection under load.
Enhanced High-Speed Performance: The combination of low-density ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces, enabling a high limiting speed of 56,000 rpm. This design also reduces friction and heat generation.
Superior Load Capacity: The 25° contact angle is optimized to support significant combined radial and axial loads simultaneously.
Long-Term Reliability & Maintenance-Free Operation: The integral seals and factory-applied grease lubrication protect against contamination and provide reliable operation within a -30°C to 110°C temperature range, ensuring long service life without maintenance.
S71907 ACEGA/HCP4A Bearing Typical Application Areas
The S71907 ACEGA/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are critical. Key applications include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Medical and Dental Equipment
- Aerospace Actuators and Control Systems
