7202 CD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7202 CD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.086 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
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7202 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7202 CD/P4ADBA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set configuration provides superior stability and is preloaded to Extra Light (Class A) specifications, ensuring minimal axial and radial play under operating conditions. Its primary advantages include high running accuracy, excellent stiffness, and the capability to handle combined loads (radial and axial) simultaneously, making it ideal for high-speed, high-precision machinery.
7202 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series and size designation (15mm bore, 35mm OD). |
| C | 15° contact angle. |
| D | Duplex (Two single bearings supplied as a matched set). |
| P4A | High precision tolerance class (equivalent to ABEC 7). |
| DB | Back-to-Back mounting arrangement. |
| A | Specifies the preload level: Extra Light (Class A). |
7202 CD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid bearing spread, significantly increasing system stiffness and moment load capacity, which is critical for maintaining precision under load.
- Superior Precision: Manufactured to P4A tolerance class, this bearing ensures extremely tight dimensional and running accuracy, minimizing vibration and supporting high positional repeatability.
- Optimized for Combined Loads: The 15° contact angle is engineered to efficiently support substantial combined radial and axial loads.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, enabling high rotational speeds (up to 95,000 rpm) with excellent stability and low heat generation.
- Pre-Lubricated & Ready-to-Use: The bearing comes lubricated from the factory, simplifying installation and ensuring immediate, reliable operation.
7202 CD/P4ADBA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Rotary Systems: In industrial robots, indexing tables, and rotary encoders.
- High-Speed Motors and Spindles: Used in PCB drilling spindles and dental handpieces.
- Medical and Laboratory Equipment: For centrifuges and other precision instruments requiring smooth, accurate rotation.
