7202 ACD/HCP4ADBD
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7202 ACD/HCP4ADBD
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
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1440 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7202 ACD/HCP4ADBD Bearing Product Overview & Core Advantages
The 7202 ACD/HCP4ADBD is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This back-to-back (DB) matched pair is preloaded to Heavy / Class D specifications, providing superior system stiffness and rotational accuracy. Its configuration enables it to withstand combined loads—significant radial and bidirectional axial loads simultaneously. Featuring a P4A tolerance class and ceramic balls, it is engineered for high-speed operation and long service life in demanding, high-precision environments.
7202 ACD/HCP4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design, 25° contact angle. |
| HC | Heavy Preload / Class D. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Duplex arrangement, Back-to-Back. This configuration provides high moment rigidity. |
7202 ACD/HCP4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The back-to-back duplex design with a heavy preload ensures maximum system stiffness, minimizing deflection under load and maintaining precise shaft positioning.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads from both directions, thanks to the 25° contact angle and robust construction.
- High-Speed Performance: The combination of ceramic balls (silicon nitride) and a lightweight phenolic cage reduces centrifugal forces and friction, enabling a high limiting speed of 95,000 rpm. This makes it an ideal high-speed bearing.
- Precision & Longevity: Manufactured to P4A tolerance for exceptional running accuracy. The use of ceramic balls also enhances durability and provides stable performance over a wide temperature range.
7202 ACD/HCP4ADBD Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision, speed, and rigidity are critical. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Frequency Motors: Where low friction and high rotational accuracy are required.
- Robotics: For high-accuracy joints and arm assemblies.
