S71910 ACB/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71910 ACB/HCP4AQBCA Bearing Product Overview & Core Advantages
The S71910 ACB/HCP4AQBCA is a super-precision angular contact ball bearing configured in a Quadruplex Back-to-Back (QBC) matched set. Engineered for the most demanding applications, this bearing delivers exceptional rotational accuracy, high rigidity, and superior high-speed performance. Its design is optimized to handle significant combined loads (radial and axial loads simultaneously) while maintaining stability under high rotational stresses. The use of ceramic balls and a phenolic cage further enhances its capability for high-speed operation and reduces operational friction.
S71910 ACB/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Performance Implication |
|---|---|---|
| S71910 | Basic bearing series and size designation (50mm bore, 72mm OD) | Defines the core bearing dimensions and geometry |
| ACB | Angular Contact Bearing with a 25° contact angle | Optimized for high axial load capacity and high-speed operation |
| HCP4A | High-Precision P4A tolerance class | Ensures extremely tight running accuracy and minimal vibration |
| QBC | Quadruplex Back-to-Back arrangement | Provides maximum system rigidity and moment load capacity |
S71910 ACB/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement of four bearings creates an exceptionally stiff bearing system. This configuration is ideal for applications requiring resistance to complex combined loads and high moment loads, providing superior positional accuracy.
High-Speed Capability: The combination of ceramic balls (silicon nitride) and a lightweight phenolic cage significantly reduces centrifugal forces and operating temperature. This allows the bearing to achieve a high limiting speed of 34,000 rpm with minimal friction and wear.
Precision Engineering: Manufactured to P4A tolerance class with an Extra Light (Class A) preload, this bearing ensures minimal runout and smooth, quiet operation. The precision bearing dimensions and controlled contact angle guarantee consistent performance.
Sealed and Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
S71910 ACB/HCP4AQBCA Bearing Typical Application Areas
This high-performance super-precision bearing set is designed for critical applications where extreme accuracy, high speed, and rigidity are paramount. Typical uses include:
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Robotic Drives and Actuators
- High-Speed Dental and Medical Handpieces
- Aerospace and Defense Instrumentation
- Advanced Semiconductor Manufacturing Equipment
