7202 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7202 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.037 kg
Tolerance class
P4 (ABEC-7)
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
-0.006mm to 0
Width
11 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° to 110 °C
Radial dynamic load rating
1609 lbf
Radial static load rating
720 lbf
Limiting speed
75 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:
$ 78.72
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7202 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7202 ACD/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, enabling it to handle combined radial and axial loads simultaneously with high stability. Its construction with a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and superior performance in high-speed applications. Manufactured to P4 (ABEC-7) tolerance, it is ideal for machine tool spindles and other precision machinery.
7202 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7202 ACD/HCP4A provides specific technical information:
- 7202: Basic bearing series, indicating a 15mm bore, 35mm OD, and 11mm width.
- A: Denotes a 25° contact angle.
- CD: Indicates a preload class for high rigidity and precise running accuracy.
- HCP4A: A composite suffix where:
- P4: Specifies the P4 (ABEC-7) tolerance class for ultra-precision.
- A: Further defines the internal radial clearance and tolerance.
7202 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The application of a preload (CD) eliminates internal clearance, resulting in significantly increased system stiffness and precise shaft positioning, which is critical for machining accuracy.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduces centrifugal forces, enabling a high limiting speed of 75,000 rpm and lower operating temperatures.
- Extended Service Life: Ceramic balls are harder and more wear-resistant than steel, and they are electrically insulating, reducing the risk of electrical erosion. This leads to a longer operational life, especially in demanding conditions.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional control on the bore, outside diameter, and width, ensuring consistent, high-performance operation in precision assemblies.
7202 ACD/HCP4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and navigation instruments.
- Medical Equipment: High-speed centrifuges and imaging device rotors.
