71915 CD/P4ADT
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71915 CD/P4ADT
Basic Information
System of measurement
Metric
Weight
0.7 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13162 lbf
Radial static load rating
16875 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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71915 CD/P4ADT Bearing Product Overview & Core Advantages
The 71915 CD/P4ADT is a precision angular contact ball bearing supplied as a matched duplex tandem (DT) pair. Engineered to the exacting P4A tolerance class, this bearing is designed for applications requiring exceptional running accuracy and high system rigidity. Its primary advantage lies in its ability to handle significant axial loads in one direction while maintaining high-speed capabilities, making it an ideal solution for precision spindles and other high-performance machinery.
71915 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| C | 15° contact angle, optimized for high axial load capacity. |
| D | Indicates the bearing is part of a duplex set. |
| P4A | High precision tolerance class with enhanced dimensional and running accuracy requirements. |
| DT | Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity in a single direction. |
71915 CD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex tandem (DT) arrangement combines two bearings to create a highly rigid unit capable of supporting very high axial loads in one direction.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-speed, high-accuracy applications.
- High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 36,000 rpm, reducing centrifugal forces and friction.
- Durability & Reliability: Manufactured from high-grade chrome steel for both rings and balls, ensuring long service life and consistent performance under demanding conditions.
71915 CD/P4ADT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motor spindles and servo drives.
- Industrial Pumps & Compressors: Applications requiring precise shaft positioning and high axial stiffness.
