S71910 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71910 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71910 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This sealed bearing features a single-row design with a 25° contact angle and is manufactured to a P4A tolerance class, ensuring ultra-precise running accuracy. Its core advantages include the ability to handle high combined loads (radial and axial), superior high-speed capabilities facilitated by its phenolic cage and ceramic balls, and long service life due to its pre-lubricated, sealed construction. It is an ideal solution for high-rigidity, high-reliability spindle arrangements.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Bearing series and size designation (10mm bore, 72mm OD, 12mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Enhanced internal design for high-precision applications. |
| GA | Universal Matchable (SU) bearing, supplied in a set of 4 for preload adjustment. |
| HC | Hybrid Ceramic: Ceramic balls with steel rings. |
| P4A | High-Precision Tolerance Class, superior to ABEC 7. |
S71910 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This construction enables higher limiting speeds, increased stiffness, and extended service life, especially in high-speed applications.
Phenolic Cage: The lightweight and robust phenolic resin cage contributes to excellent high-speed performance and smooth operation at the maximum limiting speed of 34,000 rpm.
Precision & Rigidity: Manufactured to P4A tolerance standards with an extra light preload (Class A), this bearing provides exceptional running accuracy and rotational stability, resulting in superior system rigidity and minimal runout.
Sealed & Pre-Lubricated: The integrated seals protect against contamination and retain the high-performance grease, making the bearing maintenance-free and reliable throughout its operational temperature range of -30°C to 110°C.
S71910 ACDGA/HCP4A Bearing Typical Application Areas
The S71910 ACDGA/HCP4A is engineered for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring and testing equipment.
- High-Speed Motors: Spindles for PCB drilling and routing.
- Medical Equipment: Dental handpieces, high-speed centrifuges.
- Aerospace & Defense: Gyroscopes, navigation systems.
