71934 CD/HCP4ATGA
Hybrid Ceramic Super Precision 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 CD/HCP4ATGA Bearing Product Overview & Core Advantages
The 71934 CD/HCP4ATGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (radial and axial loads simultaneously), this bearing features a universal matchable (SU) design, allowing bearings to be paired in any combination to achieve the required preload and rigidity. Its construction with a ceramic ball and phenolic cage contributes to superior high-speed capabilities and reduced weight. With a P4A tolerance class, it guarantees ultra-precise running accuracy, making it ideal for high-reliability, high-rigidity spindle systems.
71934 CD/HCP4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71934 | Basic bearing series and size designation (170mm bore, 230mm OD). |
| CD | A 15° contact angle and universal matchable (SU) design. Two bearings can be mounted in a back-to-back (DB) or face-to-face (DF) arrangement. |
| HC | Indicates the use of hybrid ceramic balls (silicon nitride), which reduce centrifugal forces, lower operating temperatures, and enable higher speeds. |
| P4A | Specifies the tolerance class, denoting very high running accuracy (equivalent to ABEC 7/ISO P4) with additional geometrical tolerances for spindle applications. |
| TGA | Refers to the phenolic (textile laminate) cage, which is lightweight, strong, and ideal for high-speed operation. |
71934 CD/HCP4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching capability allow for precise preload setting, resulting in a very stiff bearing arrangement that can handle significant combined loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density) and a lightweight phenolic cage significantly reduces centrifugal forces and inertia, enabling a high limiting speed of 16,250 rpm.
- Enhanced Precision and Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The open design, when used in a properly sealed and lubricated system, allows for optimal heat dissipation and long service life.
- Optimized for Matched Sets: Supplied as part of a universal matchable set, these bearings simplify installation and ensure consistent, high-performance preload in multi-bearing spindle configurations.
71934 CD/HCP4ATGA Bearing Typical Application Areas
This high-precision angular contact ball bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
