71912 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71912 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71912 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing features an extra light preload (Class A) and is supplied lubricated for immediate operation. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs to support combined loads, making it an ideal solution for high-rigidity, high-speed spindles and precision machinery.
71912 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
- 71912: Basic model number indicating a super-precision angular contact bearing series with 60mm bore, 85mm OD, and 26mm width.
- C: Represents a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- E: Indicates optimized internal geometry for enhanced performance and load distribution.
- P4A: Denotes ultra-precision tolerance class with dimensional and running accuracy exceeding ABEC 7 standards.
- DGA: Specifies the bearing is supplied lubricated and features phenolic cage construction.
71912 CE/P4ADGA Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior machining accuracy. The 15° contact angle and optimized internal geometry provide excellent rigidity under combined loading conditions.
High-Speed Capability: The phenolic cage offers superior strength-to-weight ratio and excellent sliding characteristics, enabling limiting speeds up to 31,000 rpm. The optimized internal design reduces friction and heat generation at high rotational speeds.
Universal Matching Design: As a Universal Matchable (SU) bearing, multiple units can be paired in various configurations (back-to-back, face-to-face, or tandem) to accommodate different load requirements and stiffness characteristics without additional machining or selection processes.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, the bearing delivers high fatigue resistance and long service life under demanding operating conditions within the specified temperature range of -30°C to 110°C.
71912 CE/P4ADGA Bearing Typical Application Areas
The 71912 CE/P4ADGA excels in applications requiring ultra-precision and high-speed performance:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Spindles: PCB drilling machines, semiconductor manufacturing equipment
- High-Speed Motors: Servo motors, spindle motors, and high-frequency applications
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging systems
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
