7200 CD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7200 CD/HCP4ADGB
Basic Information
System of measurement
Metric
Weight
0.058 kg
Tolerance class
P4A
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
-0.004mm to 0
Width
18 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°C to 110 °C
Radial dynamic load rating
1638 lbf
Radial static load rating
855 lbf
Limiting speed
185 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7200 CD/HCP4ADGB Bearing Product Overview & Core Advantages
The 7200 CD/HCP4ADGB is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This universal matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously. Its core advantages include superior high-speed capability enabled by a phenolic cage and ceramic balls, a P4A ultra-precision tolerance class for minimal runout, and a light preload (Class B) for high rigidity and immediate operational readiness. The combination of ceramic balls and phenolic cage contributes to lower friction and extended service life, making it ideal for high-reliability, high-RPM applications.
7200 CD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7200 CD | Basic bearing series with 10mm bore, 30mm OD, and 18mm width. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced weight, lower friction, and higher speed potential. |
| P4A | Indicates an ultra-precision tolerance class with very tight dimensional and running accuracy limits. |
| DGB | Universal Matchable (SU): The bearing is ground to a specific 15° contact angle and can be universally paired with another identical bearing in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement without pre-selection. |
7200 CD/HCP4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The P4A tolerance class and light preload (Class B) ensure minimal deflection and high system stiffness, which is critical for maintaining precision under load.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling the high limiting speed of 185,000 rpm.
- Combined Load Capacity: The 15° contact angle is optimized to handle significant combined radial and axial loads efficiently.
- Extended Service Life & Reliability: Ceramic balls are harder, lighter, and more corrosion-resistant than steel, leading to reduced wear, lower operating temperatures, and longer bearing life, especially in demanding environments.
- Universal Matchability: The Universal Matchable (SU) feature simplifies mounting and inventory, as any two bearings can be paired to achieve the required preload and stiffness without selective matching.
7200 CD/HCP4ADGB Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace & Defense Actuators and Instrumentation
- Semiconductor Manufacturing Equipment
