71807 CD/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71807 CD/HCP4
Basic Information
System of measurement
Metric
Weight
0.026 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1040 lbf
Radial static load rating
968 lbf
Limiting speed
53 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:
$ 337.98
/ each
In Stock
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71807 CD/HCP4 Bearing Product Overview & Core Advantages
The 71807 CD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional speed capabilities. Characterized by its compact 7mm width and P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high combined loads (radial and axial) in one direction. Its advanced material composition, featuring a ceramic ball set and a phenolic cage, enables superior performance in high-speed and thermally challenging environments, making it an ideal solution for high-rigidity spindles and precision machinery.
71807 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71807 CD/HCP4 reveals its specific technical configuration:
- 71807: The basic bearing series, indicating a high-precision angular contact design with a 35mm bore and 47mm outside diameter.
- CD: Signifies a preload class. This indicates the bearing is supplied with a specific internal clearance reduction to increase system stiffness and rotational accuracy.
- HCP4: A composite suffix. HC denotes the use of Hybrid Ceramic components (ceramic balls with steel rings). P4 specifies the tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy.
71807 CD/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at the limiting speed of 53,000 rpm.
- Optimized Cage Design: The phenolic resin cage is lightweight and possesses excellent slip characteristics, contributing to lower friction, reduced heat generation, and superior high-speed performance.
- High Precision & Rigidity: Manufactured to P4 tolerance and supplied with a preload, this bearing delivers minimal runout and high system stiffness, which is critical for maintaining machining accuracy.
- 15° Contact Angle: This optimized angle provides an excellent balance between radial load capacity and thrust load capacity, making it suitable for applications with significant combined loads.
71807 CD/HCP4 Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Frequency Spindles for CNC machining centers and PCB drilling machines
- Precision Grinding Spindles
- High-Speed Motors and Electric Spindles
- Medical Device Instrumentation and Dental Handpieces
- Aerospace Actuation Systems and Turbocharger shafts
