71812 CD/HCP4
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71812 CD/HCP4
Basic Information
System of measurement
Metric
Weight
0.088 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
78 mm
Outside diameter tolerance
-0.007mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
3218 lbf
Limiting speed
30 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:
$ 576.86
/ each
In Stock
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71812 CD/HCP4 Bearing Product Overview & Core Advantages
The 71812 CD/HCP4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional speed and rigidity. Designed to accommodate primarily axial loads in one direction and combined loads, its compact design and P4 (ABEC-7) super-precision tolerance ensure superior running accuracy. The combination of a ceramic ball material and a phenolic resin cage enables outstanding high-speed performance and thermal stability, making it an ideal choice for demanding, high-rotation machinery.
71812 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71812 CD/HCP4 is decoded as follows:
- 71812: Basic model number denoting a metric, single-row angular contact ball bearing with a 60mm bore, 78mm OD, and 10mm width.
- C: Represents a 15° contact angle, optimized for high-speed operation.
- D: Indicates the bearing is supplied with a specific preload for enhanced rigidity and precise shaft positioning.
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4: Denotes the tolerance class P4 (ABEC-7), indicating ultra-precision manufacturing standards.
71812 CD/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The preload (D) and P4 tolerance class eliminate internal clearance, providing maximum shaft support and minimizing runout for exceptional positional accuracy.
- Superior High-Speed Capability: The hybrid ceramic design (HC) with lightweight ceramic balls and a phenolic resin cage significantly reduces centrifugal forces and friction, allowing for a high limiting speed of 30,000 rpm.
- Optimized Load Capacity: The 15° contact angle (C) is engineered to handle high axial loads efficiently while also supporting significant radial loads.
- Thermal Stability & Longevity: The phenolic cage and ceramic balls offer excellent dimensional stability and reduced heat generation across the operating temperature range (-30°C to 110°C), contributing to extended service life.
71812 CD/HCP4 Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics and Actuators
- Aerospace Control Systems
