71936 CD/P4ADBA
71900 Series Super Precision Angular Contact Ball 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
71936 CD/P4ADBA Bearing Product Overview & Core Advantages
The 71936 CD/P4ADBA is a metric duplex back-to-back angular contact ball bearing designed for high-precision applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is preloaded (Extra light / Class A) and supplied as a matched set, enabling it to handle combined radial and axial loads simultaneously. Its precision-ground components and phenolic cage contribute to stable operation in demanding, high-speed environments up to 11,000 rpm, making it ideal for machine tool spindles and other precision machinery.
71936 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71936 | Basic bearing series and size designation (180mm bore, 250mm OD). |
| CD | Indicates a duplex back-to-back (DB) arrangement with a specific preload. |
| P4A | Denotes a high precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Confirms the Back-to-Back (DB) mounting of the matched pair. |
| A | Specifies the Extra light preload category. |
71936 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that can withstand combined loads and moment loads effectively. With a 15° contact angle, it offers excellent axial load capacity in both directions.
High-Speed Performance: The lightweight phenolic cage and optimized internal geometry enable stable operation at high limiting speeds of 11,000 rpm, reducing centrifugal forces and heat generation.
Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore diameter, outside diameter, and width, ensuring minimal runout and superior rotational accuracy.
Matched Set Performance: Supplied as a pre-loaded, matched pair (2 bearings in set), guaranteeing optimal preload and performance without the need for selective assembly by the user.
71936 CD/P4ADBA Bearing Typical Application Areas
The 71936 CD/P4ADBA is engineered for high-precision, high-speed rotational systems, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- High-Speed Robotic Arms and precision positioning systems
