71934 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71934 CD/P4A
Basic Information
System of measurement
Metric
Weight
2.85 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
170 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
230 mm
Outside diameter tolerance
-0.011mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
29
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
29925 lbf
Radial static load rating
37350 lbf
Limiting speed
8.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 3065.28
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71934 CD/P4A Bearing Product Overview & Core Advantages
The 71934 CD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Positioned within the P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its optimized internal geometry, including a 15° contact angle, ensures exceptional high-speed performance and operational stability. Pre-lubricated and featuring a phenolic cage, it offers reliable, ready-to-install performance for critical machinery.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71934 | Basic bearing series and size designation | Defines the core bearing dimensions: 170mm bore, 230mm OD, 28mm width. |
| CD | High contact angle (15°) and optimized internal design | Enhances thrust load capacity and suitability for high-speed operation. |
| P4 | Tolerance class (equivalent to ABEC-7) | Indicates ultra-precision manufacturing for applications requiring minimal runout and vibration. |
| A | Preload designation (Light preload) | Provides increased rigidity and precise shaft positioning, reducing deflection under load. |
71934 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with a light preload, this bearing delivers superior shaft positioning accuracy and stiffness, minimizing system deflection under combined loads.
- Optimized Load Capacity: The 15° contact angle and robust construction, utilizing chrome steel rings and balls, provide a high dynamic load rating of 29,925 lbf and a static load rating of 37,350 lbf, making it ideal for demanding applications.
- Exceptional High-Speed Performance: The lightweight phenolic cage and optimized internal design contribute to a high limiting speed of 8,500 rpm, reducing centrifugal forces and ensuring stable operation.
- Ready for Service: The bearing comes pre-lubricated, facilitating easy installation and ensuring immediate, reliable performance upon startup.
71934 CD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Equipment
- Aerospace Control Systems
