S71912 CE/HCP4ADGA
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 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The S71912 CE/HCP4ADGA is a super-precision double row angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, it is designed to simultaneously handle combined radial and axial loads from both directions. Its compact design, featuring two rows of ceramic balls and a universal matchable (SU) configuration, delivers superior high-speed performance, outstanding dimensional stability, and long-term operational reliability in high-precision machinery.
S71912 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
- S7: Super-precision bearing series
- 1912: Standard dimension series (60mm bore, 85mm OD, 26mm width)
- CE: 15° contact angle
- HC: Hybrid Ceramic (steel rings with ceramic balls)
- P4A: High-precision tolerance class (exceeds ABEC 7)
- A: Extra light preload
- DG: Universal matchable (Universal Matchable (SU))
- A: Specific internal design/clearance
S71912 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides significantly increased radial and moment load stiffness compared to single row bearings. The 15° contact angle is optimized for supporting substantial combined loads.
Superior High-Speed Performance: The combination of lightweight phenolic resin cage and low-density silicon nitride (Si3N4) ceramic balls reduces centrifugal forces, enabling the high limiting speed of 32,500 rpm. This minimizes friction and heat generation.
Enhanced Durability & Longevity: Ceramic balls are electrically resistant, harder, and lighter than steel, leading to reduced wear, extended bearing service life, and the ability to run with less lubrication.
Pre-optimized for Precision: The universal matchable (SU) designation means bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) without preload variation, simplifying installation and ensuring consistent high-precision performance.
S71912 CE/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for the spindles and critical rotary axes of:
- High-Speed Machine Tool Spindles (CNC milling, grinding, and jig boring machines)
- Precision Robotic Drives
- High-Frequency Machining Centers
- Medical & Dental Equipment Spindles
- Aerospace Test & Measurement Equipment
