7201 CD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7201 CD/P4ADT
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
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2151 lbf
Radial static load rating
1148 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7201 CD/P4ADT Bearing Product Overview & Core Advantages
The 7201 CD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. This duplex tandem (DT) arrangement consists of two matched bearings preloaded against each other, delivering superior axial load capacity in one direction. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and high rotational accuracy. Its compact design, combined with a phenolic cage and factory-applied lubrication, makes it an ideal solution for high-speed spindles and other precision machinery where high rigidity and reliable performance are critical.
7201 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7201 | Basic bearing series, indicating a metric angular contact ball bearing with a 12mm bore, 32mm OD, and 20mm width. |
| CD | Indicates a duplex tandem (DT) arrangement. Two bearings are mounted together to maximize axial load capacity in one direction. |
| P4A | Specifies the tolerance class, denoting very high precision with tight control over bore, outside diameter, and width tolerances for superior running accuracy. |
| Open | Seal type. The bearing is unsealed (open), allowing for optimal lubrication flow and heat dissipation in high-speed applications. |
7201 CD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle create an exceptionally rigid bearing set capable of handling high unidirectional axial loads and combined loads, making it suitable for preloaded systems.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a lightweight phenolic cage, this bearing achieves a high limiting speed of 95,000 rpm, ensuring smooth operation and minimal vibration in precision spindles.
- Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, providing high durability and wear resistance. The bearing is factory-lubricated for immediate use and reliable operation within a temperature range of -30°C to 110°C.
7201 CD/P4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Rotary Systems: Applications in semiconductor manufacturing, optical scanners, and measuring instruments.
- High-Speed Drives: Where compact design and high unidirectional axial load capacity are paramount.
