71915 CD/P4ADBD
71900 Series Super Precision Angular Contact Ball Bearings
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71915 CD/P4ADBD Bearing Product Overview & Core Advantages
The 71915 CD/P4ADBD 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 stiffness and the ability to withstand combined loads, including significant radial and bidirectional axial loads. Manufactured to a P4A tolerance class and featuring a heavy preload (Class D), it is engineered for high-precision, high-reliability scenarios where minimal deflection and precise rotational accuracy are critical.
71915 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing designation indicating a 75 mm bore, 105 mm OD, and 32 mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation and axial load capacity. |
| D | Indicates a duplex back-to-back (DB) arrangement of two matched bearings. |
| P4A | Specifies a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DB | Reinforces the duplex back-to-back mounting configuration for maximum rigidity. |
71915 CD/P4ADBD Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a large spread between load centers, significantly increasing system stiffness and resistance to moment loads, making it ideal for applications where shaft deflection must be minimized.
Superior Load Capacity: The 15° contact angle and heavy preload (Class D) enable the bearing to handle substantial combined radial and axial loads in both directions simultaneously.
Precision & High-Speed Capability: Built to P4A tolerance class with a phenolic resin cage, this bearing ensures smooth operation, reduced vibration, and is suitable for high-speed applications up to 36,000 rpm.
Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, offering high durability and fatigue resistance. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71915 CD/P4ADBD Bearing Typical Application Areas
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Precision Gearboxes and transmission systems
- Industrial Pumps and compressors
- Precision Medical Equipment and laboratory apparatus
- Robotic Arms and automation systems requiring high positional accuracy
