7200 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7200 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.029 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
30 mm
Outside diameter tolerance
-0.005mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1010 lbf
Radial static load rating
434 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:
$ 65.77
/ each
In Stock
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7200 CD/HCP4A Bearing Product Overview & Core Advantages
The 7200 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing with preload availability, it delivers superior axial and radial rigidity, making it ideal for spindle assemblies and other high-performance machinery. Its construction with ceramic balls and a phenolic cage enables operation at limiting speeds up to 100,000 rpm, while the P4 (ABEC-7) tolerance class ensures consistent, reliable performance in the most demanding precision applications.
7200 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model designation 7200 CD/HCP4A reveals its specific technical features:
- 7200: Basic series designation, indicating a metric, light-duty angular contact bearing with a 10mm bore.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial loads.
- D: Indicates the bearing is supplied with a pre-established preload for immediate high rigidity.
- HCP4A: A compound suffix specifying:
- HC: Hybrid Ceramic, signifying the use of ceramic balls with steel rings.
- P4: The tolerance class equivalent to ABEC-7, guaranteeing ultra-precision.
- A: Signifies a 30° contact angle (superseding the 'C' designation in this context for this specific bearing's finalized geometry).
7200 CD/HCP4A 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 very high speeds.
- High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage provides excellent dimensional stability and guidance for the ceramic balls, contributing directly to the bearing's exceptional limiting speed capability.
- Superior Rigidity and Precision: The P4 precision grade and available preload ensure minimal runout and high system stiffness, critical for maintaining accuracy under load.
- Optimized Load Capacity: The angular contact design efficiently handles combined loads (radial and axial) simultaneously. The specific contact angle is engineered to support substantial axial loads in one direction.
7200 CD/HCP4A 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-Speed Machine Tool Spindles: For CNC milling, grinding, and drilling centers.
- Precision Robotics: In high-accuracy joints and arm assemblies.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small turbine systems.
