S71930 ACDGA/P4A
Sealed Super Precision Angular Contact Ball 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
S71930 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71930 ACDGA/P4A is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Its design enables it to simultaneously handle combined loads—significant radial loads and bidirectional axial loads. Manufactured to the stringent P4A tolerance class, this bearing offers superior running accuracy, making it ideal for high-speed spindles and other high-reliability precision machinery. The compact design, featuring a 28mm width, allows for space-saving installations without compromising performance.
S71930 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings |
| 1930 | Bore diameter: 150 mm, Outside diameter: 210 mm, Width: 28 mm |
| AC | Angular Contact design with a 25° contact angle |
| D | Double row design for high rigidity and increased load capacity |
| GA | Universal Matchable (SU) bearing supplied in a set of 2 with Extra light preload (Class A) |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards |
S71930 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides superior stiffness, enabling stable support for spindles and shafts under heavy combined loads. With a dynamic load rating of 24,300 lbf and a static load rating of 28,125 lbf, it reliably handles demanding operational stresses.
Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and reduced friction at high speeds. This, combined with the optimized internal geometry, supports the high limiting speed of 11,000 rpm.
Sealed & Pre-lubricated for Longevity: As a sealed bearing, it is protected from contamination. Pre-lubricated with grease, it operates effectively within a temperature range of -30°C to 110°C, offering a maintenance-free service life in many applications.
Precision Engineering: Manufactured from chrome steel for both rings and balls, and held to the P4A tolerance class, this bearing ensures minimal runout and vibration for exceptional application accuracy.
S71930 ACDGA/P4A Bearing Typical Application Areas
The S71930 ACDGA/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring and testing equipment.
- High-Frequency Motors & Spindles: Applications requiring minimal vibration and high rotational accuracy.
- Robotics: Precision joints and arms requiring high rigidity and responsiveness.
