71803 CD/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71803 CD/HCP4
Basic Information
System of measurement
Metric
Weight
0.009 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
26 mm
Outside diameter tolerance
-0.005mm to 0
Width
5 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
526 lbf
Radial static load rating
360 lbf
Limiting speed
100 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:
$ 184.49
/ each
In Stock
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71803 CD/HCP4 Bearing Product Overview & Core Advantages
The 71803 CD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional performance. Positioned in the P4 (ABEC-7) tolerance class, it is designed to provide superior running accuracy and rotational stability. A key advantage is its ability to accommodate combined loads, efficiently handling both radial and substantial axial loads in one direction. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capabilities, low friction, and extended service life, making it an ideal choice for high-reliability, compact assemblies.
71803 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71803 CD/HCP4 provides detailed technical specifications through its suffixes:
- 71803: Denotes the bearing series and size (17mm bore, 26mm OD, 5mm width).
- CD: Indicates a 15° contact angle and that the bearing is supplied with a specific preload for immediate high-rigidity performance.
- HCP4: A composite suffix where:
- P4: Specifies the tolerance class (ABEC-7), ensuring extremely tight dimensional and running accuracy.
- HC: Likely refers to the use of Hybrid Ceramic balls (steel rings with ceramic balls).
71803 CD/HCP4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class and supplied with a preload, this bearing delivers exceptional running accuracy and high system rigidity, minimizing deflection under load.
- Superior High-Speed Performance: The hybrid ceramic design (steel rings, ceramic balls) and lightweight phenolic resin cage significantly reduce centrifugal forces and friction, enabling a high limiting speed of 100,000 rpm.
- Excellent Load Capacity: The optimized 15° contact angle allows it to support significant combined loads, with a dynamic load rating of 526 lbf and a static load rating of 360 lbf.
- Reduced Maintenance & Long Life: The ceramic balls are electrically insulating, resistant to wear, and less susceptible to lubrication breakdown, contributing to a longer operational lifespan in demanding conditions.
71803 CD/HCP4 Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers, grinding machines, and PCB drilling equipment.
- Precision Instrumentation and medical devices requiring minimal vibration and high rotational accuracy.
- Aerospace Components and turbo-machinery where reliability, speed, and weight savings are critical.
- Robotics and automation systems, particularly in high-speed actuator and joint applications.
