71915 CDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71915 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.35 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
16 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
8055 lbf
Radial static load rating
8438 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 176.82
/ each
In Stock
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71915 CDGA/P4A Bearing Product Overview & Core Advantages
The 71915 CDGA/P4A is a single row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. Positioned in the P4A tolerance class, it delivers exceptional dimensional stability and rotational precision. Its key advantage lies in its ability to accommodate high-speed operation—with a limiting speed of 36,000 rpm—while supporting significant combined loads (radial and axial). The universal matchable (SU) design allows for flexible mounting in preloaded arrangements, making it an ideal, compact solution for high-reliability spindles and precision machinery.
71915 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CDGA | Indicates a specific internal design with a 15° contact angle and Extra Light (A) preload. The "Universal Matchable (SU)" designation means two identical bearings can be paired in a duplex set for optimized preload and stiffness. |
| P4A | Denotes an ultra-precision tolerance class exceeding ABEC 7 standards. This ensures extremely tight dimensional control on bore, outside diameter, and width for superior running accuracy in demanding applications. |
71915 CDGA/P4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and friction, directly contributing to the high limiting speed of 36,000 rpm.
- Precision & Rigidity: Manufactured to P4A tolerance class with an extra light preload, this bearing provides high rotational accuracy, minimal runout, and increased system rigidity.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently handle combined radial and axial loads, with a dynamic load rating of 8055 lbf and a static load rating of 8438 lbf.
- Material Integrity: Constructed from chrome steel for both rings and balls, ensuring high hardness, wear resistance, and long service life under demanding operating conditions.
71915 CDGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles in PCB drilling and routing equipment
- High-Frequency Motors
- Medical & Dental Handpiece Drives
- Aerospace Instrumentation and auxiliary systems
