71934 CDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71934 CDGB/P4A Bearing Product Overview & Core Advantages
The 71934 CDGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Operating under the stringent P4A tolerance class, this bearing is designed to handle significant combined loads (axial and radial) simultaneously, with a 15° contact angle optimized for high axial load capacity. Its light preload (Class B) ensures minimal deflection and smooth operation, making it ideal for high-speed spindles and other precision machinery. The bearing is Universal Matchable (SU), allowing for precise arrangement in sets of three to achieve optimal stiffness and system performance.
71934 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71934 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 170mm bore. |
| C | Denotes a 15° contact angle, providing a balanced capacity for axial and radial loads. |
| DGB | Indicates a Universal Matchable (SU) bearing. Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to support combined loads. |
| /P4A | Specifies the tolerance class P4A, representing very high dimensional and running accuracy, superior to standard ABEC-7 precision. |
71934 CDGB/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance standards with a light preload, this bearing delivers exceptional running accuracy and system rigidity, minimizing deflection under load for superior performance in precision applications.
Optimized Load Capacity: The 15° contact angle and robust construction, featuring 29 chrome steel balls, provide high dynamic (29,925 lbf) and static (37,350 lbf) load ratings, enabling reliable operation under significant combined loads.
High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 16,250 rpm. This makes the bearing suitable for demanding high-speed applications like machine tool spindles.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be flexibly mounted in pre-adjusted sets (typically 3 bearings) without the need for selective shimming, simplifying installation and ensuring optimal preload and stiffness in the final application.
71934 CDGB/P4A Bearing Typical Application Areas
The 71934 CDGB/P4A is ideally suited for high-performance machinery requiring extreme precision and speed, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Precision Gearboxes
- Industrial Pumps and Compressors
- Aerospace Positioning Systems and Robotic Arms
