71934 ACDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71934 ACDGB/P4A Bearing Product Overview & Core Advantages
The 71934 ACDGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle and Universal Matchable (SU) design enable it to efficiently handle combined radial and axial loads in one direction, making it ideal for high-speed spindles and precision machinery. The bearing comes pre-lubricated and features a light preload (Class B), ensuring immediate operational readiness and optimal performance in demanding environments.
71934 ACDGB/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 with 25° contact angle |
| D | Optimized internal geometry for enhanced performance |
| GB | Universal Matchable bearing, can be paired in various arrangements |
| P4A | High-Precision Tolerance Class with enhanced running accuracy |
71934 ACDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring minimal runout and vibration for high-precision applications.
Optimized Internal Design: Features 29 precision balls with 19.05mm diameter and a phenolic cage that provides excellent guidance at high speeds up to 16,250 rpm, while offering reduced weight and friction.
Superior Load Capacity: The 25° contact angle enables efficient handling of combined loads, with dynamic load rating of 27,900 lbf and static load rating of 36,000 lbf, providing reliable performance under demanding conditions.
Universal Matching Capability: As a Universal Matchable (SU) bearing supplied in sets of 3, it allows for flexible mounting arrangements (DB, DF, DT) to accommodate specific application requirements for preload and rigidity.
71934 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling applications requiring precision and rigidity
- Precision Instrumentation: Measuring equipment, optical systems, and laboratory instruments demanding exceptional accuracy
- High-Speed Motors: Spindle motors, high-frequency drives, and precision rotary systems
- Aerospace Components: Guidance systems, rotor assemblies, and other critical aerospace applications
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems requiring reliable high-speed operation
