S71912 CD/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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S71912 CD/HCP4A Bearing Product Overview & Core Advantages
The S71912 CD/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, it offers superior running accuracy. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The use of ceramic balls and a phenolic cage contributes to high-speed capability, reduced weight, and extended service life, making it an ideal choice for high-reliability, high-speed spindles and precision machinery.
S71912 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Denotes a series of high-precision angular contact ball bearings.
- 1912: Specifies the bearing dimensions (Bore: 60mm, OD: 85mm, Width: 13mm).
- CD: Indicates a matched arrangement with a specific contact angle (15°) and preload for optimized rigidity and precision.
- HC: Signifies the use of Hybrid Ceramic components (Ceramic balls with steel rings).
- P4: Identifies the tolerance class (ABEC-7), ensuring ultra-precise dimensions and runout.
- A: Confirms the bearing is lubricated from the factory.
S71912 CD/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design with a 15° contact angle and preload provides superior axial and radial stiffness, minimizing deflection under load for exceptional positional accuracy.
Enhanced Speed and Durability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage enables a high limiting speed of 18,000 rpm while reducing friction and heat generation.
Superior Load Capacity: Engineered to handle high dynamic and static load ratings (4478 lbf / 3442 lbf), this bearing reliably supports significant combined loads in high-performance applications.
Sealed and Lubricated for Longevity: As a sealed and pre-lubricated unit, it is protected from contamination and is ready for immediate installation, offering a maintenance-free operational life within its specified temperature range.
S71912 CD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high speed, high rigidity, and exceptional accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors
- Medical Equipment (e.g., Dental handpieces)
- Aerospace Actuators and Control Systems
