71934 ACDGA/P4A
71900 Series 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
71934 ACDGA/P4A Bearing Product Overview & Core Advantages
The 71934 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. As a P4A tolerance class bearing, it offers extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery. Its 25° contact angle is optimized to support significant combined loads, effectively handling both radial and axial forces. The bearing is universally matchable (SU), allowing for precise preload control when mounted in pairs or sets, which is critical for achieving maximum system rigidity and performance.
71934 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71934 | Basic bearing series and size designation (170mm bore, 230mm OD). |
| AC | Angular Contact design, enabling it to carry combined loads. |
| D | High ball count and optimized internal geometry for increased load capacity. |
| GA | Universal Matchable (SU) bearing. Can be paired with another identical bearing to achieve a specific preload without selective mounting. |
| P4A | Super precision tolerance class, denoting extremely tight limits on bore, outer diameter, width, and running accuracy. |
71934 ACDGA/P4A Bearing Structural Features & Performance Benefits
Precision-Ground Components: Manufactured to P4A standards, this bearing ensures minimal runout and vibration, which is paramount for high-speed operation up to 16,250 rpm.
Optimized Internal Geometry: The 25° contact angle and high ball count (29 balls) provide a superior load rating, with a dynamic capacity of 27,900 lbf and a static capacity of 36,000 lbf, enabling reliable performance under demanding combined loads.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent guidance and stability of the balls at high speeds, contributing to lower friction and higher limiting speeds.
Universal Matching (SU): This feature allows for simplified installation and optimal preload setting in matched bearing arrangements, resulting in enhanced system stiffness and positioning accuracy.
71934 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Grinding Spindles: Applications where minimal runout and high rotational accuracy are critical.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring super-precision bearings.
