71915 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71915 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.34 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
34
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2992 lbf
Radial static load rating
2812 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 804.25
/ each
In Stock
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71915 ACB/HCP4A Bearing Product Overview & Core Advantages
The 71915 ACB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Featuring a P4 (ABEC-7) tolerance class and a 25° contact angle, this bearing is optimized for high rigidity and precise rotational accuracy, making it an ideal component for high-speed spindles and other critical machinery.
71915 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Standard bearing series designation, indicating a metric, single-row angular contact bearing. |
| ACB | Signifies a 25° contact angle and specific internal design for high precision and rigidity. |
| HCP4A | Indicates a P4 (ABEC-7) tolerance class and the bearing is supplied with a preload for enhanced stiffness and reduced runout. |
71915 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and factory-applied preload work in concert to deliver exceptional system stiffness and minimal axial/radial deflection under load, ensuring superior positional accuracy.
- Superior Load Capacity: Engineered to handle combined loads effectively, with a dynamic load rating of 2992 lbf and a static load rating of 2812 lbf.
- High-Speed Capability: The combination of a lightweight phenolic cage and ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 28,000 rpm.
- Optimized Material Selection: The use of ceramic balls provides benefits such as reduced weight, lower friction, and extended service life, especially in high-speed and high-temperature environments.
71915 ACB/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications where high speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Medical and Dental Equipment Spindles
