71934 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71934 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71934 CD/P4ADGA is a super-precision angular contact ball bearing designed for the most demanding applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers outstanding dimensional and running accuracy. Its universal matchable (SU) design allows for flexible mounting in pairs to support combined loads (radial and axial) in any configuration. With an extra light preload (Class A) and a 15° contact angle, it is optimized for high-speed operation and provides superior running stability, making it ideal for high-precision, high-reliability spindles and machinery.
71934 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 71934 | Basic bearing series and size designation (170mm bore, 230mm OD). | Defines the core dimensions and capacity. |
| CD | Contact angle of 15° and high-precision construction. | Optimized for high-speed performance and axial load capacity. |
| P4A | Super-precision tolerance class (equivalent to ABEC 7). | Ensures extremely low vibration and noise for superior accuracy. |
| DGA | Universal Matchable (SU) bearing pair with extra light preload (Class A). | Allows for flexible mounting in pairs (back-to-back, face-to-face, or tandem) to handle complex load conditions. |
71934 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to super-precision P4A tolerances with extremely tight dimensional control (bore/OD tolerance: -0.004mm to 0). This results in exceptional running accuracy and system stiffness, crucial for minimizing deflection under load.
- Optimized Load Capacity: The 15° contact angle and robust construction with 29 balls provide an excellent balance, enabling the bearing to support significant combined radial and axial loads (Dynamic: 47,700 lbf, Static: 75,375 lbf).
- Superior High-Speed Performance: The phenolic cage is lightweight and strong, reducing centrifugal forces and allowing for a high limiting speed of 16,250 rpm. The extra light preload minimizes friction and heat generation at high speeds.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, two 71934 CD/P4ADGA bearings can be paired to form a pre-adjusted set that accommodates combined loads from any direction, simplifying installation and ensuring optimal performance.
71934 CD/P4ADGA Bearing Typical Application Areas
This high-precision angular contact ball bearing is engineered for critical applications where speed, accuracy, and rigidity are paramount. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- Medical Equipment: High-speed dental handpieces and imaging scanner gantries.
- High-Frequency Motors and Spindles: Where minimal runout and vibration are required.
