7201 ACD/P4ADFA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7201 ACD/P4ADFA
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
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2077 lbf
Radial static load rating
1102 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
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
No drawings available at the moment, will be launched soon
In Stock
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7201 ACD/P4ADFA Bearing Product Overview & Core Advantages
The 7201 ACD/P4ADFA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This P4A tolerance class bearing features a face-to-face (DF) matched arrangement and an extra light preload (Class A), making it ideal for high-precision spindles and other demanding machinery. Its primary advantage lies in its ability to handle combined loads—simultaneously supporting significant radial and axial loads—while maintaining high-speed operational stability. The compact design, with a 12 mm bore and 32 mm outside diameter, offers a space-saving solution without compromising performance.
7201 ACD/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7201 ACD/P4ADFA provides detailed technical specifications through its suffixes:
- 7201: Basic designation indicating a 12 mm bore and 32 mm outside diameter angular contact bearing.
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies the bearing is part of a Duplex (matched) set.
- P4A: Denotes a very high precision tolerance class, ensuring minimal runout and superior dimensional stability.
- DF: Indicates the Duplex Face-to-Face mounting arrangement, which increases rigidity and accommodates moment loads.
- A: Specifies Extra Light Preload (Class A), reducing deflection and vibration for smooth, high-speed operation.
7201 ACD/P4ADFA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement and angular contact design create a highly rigid system capable of withstanding combined radial and axial loads. This configuration significantly enhances moment load resistance compared to single bearings.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards and featuring a phenolic resin cage, this bearing ensures minimal vibration and stable operation at high speeds, with a limiting speed of 95,000 rpm. The 25° contact angle optimizes the balance between axial and radial load capacity.
- Optimized for Precision Applications: The extra light preload (Class A) minimizes axial and radial play, resulting in precise shaft positioning, reduced noise, and improved system accuracy. The open seal design allows for custom lubrication schemes tailored to specific operational needs.
- Durable Construction: Made from chrome steel for both rings and balls, the bearing offers high wear resistance and long service life under demanding conditions.
7201 ACD/P4ADFA Bearing Typical Application Areas
The 7201 ACD/P4ADFA is engineered for high-precision, high-speed applications where accuracy and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Spindles: PCB drilling machines and small precision machining centers.
- Robotics: High-accuracy joints and actuators requiring minimal backlash.
