71915 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71915 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.3 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
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8055 lbf
Radial static load rating
8438 lbf
Limiting speed
22 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:
$ 804.33
/ each
In Stock
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71915 CD/HCP4A Bearing Product Overview & Core Advantages
The 71915 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. This metric bearing features a 15° contact angle and is supplied with a preload, delivering high rigidity and precise shaft positioning. Its open seal design, combined with ceramic balls and a phenolic cage, enables superior high-speed performance up to 22,000 rpm. Manufactured to a P4 (ABEC-7) tolerance class, it is ideal for machine tool spindles and other demanding equipment.
71915 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71915 CD/HCP4A is decoded as follows:
- 71915: Denotes the bearing series and size. The '70' series indicates a high-precision angular contact design. '15' represents a 75mm bore diameter.
- CD: Signifies a 15° contact angle and a matched preload applied to the bearing.
- HCP4A: A composite suffix where:
- P4: Identifies the tolerance class P4 (ABEC-7), ensuring very high dimensional and running accuracy.
- A: Indicates a 25° contact angle (Note: This appears to conflict with the provided 15° specification. In practice, the 'CD' suffix typically defines the 15° angle and preload, and the 'A' in this context may refer to internal design optimizations. The primary performance is defined by the 'CD' suffix).
71915 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The angular contact design and applied preload eliminate internal clearance, providing high system stiffness and accurate rotational guidance, which is critical for machining precision.
- Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers friction and inertia, enabling stable operation at the limiting speed of 22,000 rpm.
- Optimized Load Capacity: The 15° contact angle is optimized to handle combined radial and axial loads simultaneously, with a dynamic load rating of 8055 lbf and a static load rating of 8438 lbf.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional controls on the 75 mm bore and 105 mm outside diameter, ensuring consistent performance and ease of installation in high-accuracy assemblies.
71915 CD/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindle Drives
- Precision Grinding Equipment
- High-Speed Pumps and Compressors
