71815 CD/HCP4
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71815 CD/HCP4
Basic Information
System of measurement
Metric
Weight
0.13 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
95 mm
Outside diameter tolerance
-0.008mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
33
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3218 lbf
Radial static load rating
3825 lbf
Limiting speed
24 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:
$ 839.03
/ each
In Stock
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71815 CD/HCP4 Bearing Product Overview & Core Advantages
The 71815 CD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its defining feature is the ability to accommodate combined loads—significant radial loads and axial loads in one direction simultaneously. Manufactured to P4 (ABEC-7) tolerance class, this bearing ensures exceptional running accuracy, making it ideal for high-speed spindles and other precision machinery. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability and reduced weight.
71815 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71815 CD/HCP4 provides detailed technical specifications:
- 71815: The basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 75mm bore, 95mm OD, and 10mm width.
- CD: Signifies a 15° contact angle and that the bearing is supplied with a specific preload for optimal rigidity and rotational accuracy.
- HCP4: A composite suffix where:
- HC: Indicates the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4: Denotes the tolerance class, equivalent to ABEC-7, ensuring very tight dimensional and running accuracy.
71815 CD/HCP4 Bearing Structural Features & Performance Benefits
- High-Speed Performance: The hybrid ceramic construction (steel rings, ceramic balls) significantly reduces centrifugal forces and friction, enabling a high limiting speed of 24,000 rpm. The lightweight phenolic cage is optimized for these demanding conditions.
- High Rigidity & Precision: The bearing is supplied with a factory-set preload, which minimizes axial and radial play. This results in high system rigidity, reduced vibration, and exceptional positional accuracy, which is critical for machine tool spindles.
- Superior Load Capacity: Designed with a 15° contact angle, it efficiently handles combined loads, offering a dynamic load rating of 3218 lbf and a static load rating of 3825 lbf.
- Reduced Weight & Thermal Stability: Ceramic balls are lighter than steel, reducing the overall bearing weight (0.13 kg) and inertia. The phenolic cage offers excellent dimensional stability across the operating temperature range of -30°C to 110°C.
71815 CD/HCP4 Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Medical and Dental Equipment Spindles
- Aerospace Actuators and Control Systems
