7202 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7202 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.074 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2722 lbf
Radial static load rating
1474 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7202 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7202 CD/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universally matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously. Its key advantages stem from a P4A super-precision tolerance class, a phenolic resin cage for high-speed operation, and ceramic balls (silicon nitride) that reduce centrifugal forces, lower operating temperatures, and enable superior high-speed performance up to 95,000 rpm. The extra light preload (Class A) ensures high rigidity and precise rotational accuracy right from installation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and angular contact design. |
| CD | A 15° contact angle and specific internal design optimized for high-speed operation. |
| HC | Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards, for exceptional running accuracy. |
| ADGA | Specifies Universal Matchable (SU) bearings supplied in a set of two (A), with a specific preload (D) and internal clearance (GA). |
7202 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction, heat generation, and wear. This construction is electrically insulating, non-magnetic, and provides a longer service life, especially under high-speed conditions.
- High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage is essential for maintaining stability and integrity at the bearing's limiting speed of 95,000 rpm, offering excellent strength-to-weight ratio and smooth operation.
- Super-Precision P4A Tolerances: With extremely tight bore, outer diameter, and width tolerances, this bearing ensures minimal runout and vibration, which is critical for applications demanding the highest levels of rotational accuracy.
- Universal Matchability (SU): Supplied as a pre-matched set of two bearings, they can be arranged in back-to-back (DB), face-to-face (DF), or tandem (DT) configurations without compromising preload or performance, offering design flexibility and high rigidity.
- Optimized Load Capacity: The 15° contact angle and precision engineering provide a balanced dynamic load rating of 2722 lbf and static load rating of 1474 lbf, making it suitable for complex combined load scenarios.
7202 CD/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key sectors include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and drilling centers.
- Precision Robotics: Arm joints and high-accuracy gearboxes.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units (APUs).
- High-Speed Motors and Drives: Especially in electric vehicles and industrial servo systems.
- Medical & Dental Equipment: High-speed handpieces and imaging device rotors.
