S71912 CDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71912 CDGB/P4A Bearing Product Overview & Core Advantages
The S71912 CDGB/P4A is a precision angular contact ball bearing designed for high-performance applications. This single bearing is part of a universally matchable (SU) set, allowing for precise preload configuration when paired. It features a P4A tolerance class for exceptional running accuracy, a light preload (Class B) for optimal stiffness, and is sealed and pre-lubricated with grease for long-term, maintenance-free operation. Its compact design, with a 15° contact angle, is engineered to handle combined radial and axial loads simultaneously, making it ideal for high-speed, high-rigidity spindles and precision machinery.
S71912 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Bearing series, indicating a specific internal design for high precision and performance. |
| 7 | Denotes an angular contact ball bearing. |
| 1912 | Bore diameter code (60 mm) and dimension series. |
| C | Specifies a 15° contact angle. |
| DGB | Indicates a light preload (Class B) and that the bearing is universally matchable (SU). |
| P4A | Specifies the tolerance class, denoting very high precision for inner and outer ring runouts and width tolerance. |
S71912 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a light preload, this bearing delivers exceptional running accuracy and stiffness, minimizing deflection under load for superior machining or operational results.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable it to efficiently support combined loads, handling significant radial forces and one-direction axial thrust.
- High-Speed Capability: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 32,500 rpm. The universal matchability allows for precise axial play adjustment in sets to further optimize speed performance.
- Maintenance-Free Operation: As a sealed bearing pre-lubricated with high-quality grease, it is protected from contamination and is lubricated for life within its specified temperature range (-30°C to 110°C), reducing maintenance needs and downtime.
- Durable Construction: Made from chrome steel for both rings and balls, it offers high wear resistance and long service life under demanding conditions.
S71912 CDGB/P4A Bearing Typical Application Areas
The S71912 CDGB/P4A is engineered for high-precision, high-speed applications where reliability is critical. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Robotics: High-accuracy joints and actuators.
- Medical Equipment: Dental handpieces, centrifuges, and imaging devices.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
