71936 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71936 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71936 CD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement provides superior stability and is preloaded to Moderate / Class C specifications, ensuring minimal axial and radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads efficiently, making it ideal for high-precision, high-rigidity systems where positional accuracy is critical.
71936 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71936 | Basic bearing designation indicating size series and 180mm bore diameter. |
| C | 15° contact angle, optimized for carrying combined radial and axial loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | High-precision tolerance class (exceeds ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DB | Duplex Back-to-Back mounting arrangement, providing high moment rigidity. |
| C | Specifies a Moderate preload (Class C) for optimal stiffness and rotational accuracy. |
71936 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional operational stability.
- Superior Load Capacity: With a 15° contact angle and a radial dynamic load rating of 62,100 lbf, this bearing is engineered to handle significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance class and featuring a phenolic cage, this bearing offers smooth, quiet operation and is suitable for high-speed applications up to 11,000 rpm.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, this combination provides high durability, wear resistance, and a long service life under demanding conditions.
71936 CD/P4ADBC Bearing Typical Application Areas
This high-precision, preloaded duplex bearing is ideally suited for applications requiring maximum rigidity and accuracy, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Speed Precision Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
- Medical and Laboratory Equipment
