7201 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7201 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.037 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
10 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
1287 lbf
Radial static load rating
551 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7201 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7201 ACDGC/P4A is a single row angular contact ball bearing designed for high-precision and high-speed applications. Engineered to a P4A tolerance class, it offers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to support combined loads (radial and axial) simultaneously, making it ideal for demanding arrangements. The bearing is universally matchable (SU), allowing for flexible mounting in duplex sets (back-to-back, face-to-face, or tandem) to achieve specific preload and rigidity characteristics, directly contributing to superior machine performance.
7201 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7201 | Basic bearing designation indicating a metric, single row angular contact ball bearing with a 12mm bore, 32mm OD, and 10mm width. |
| ACD | Signifies a 25° contact angle and a specific internal design optimized for high rigidity. |
| GC | Indicates a Moderate / Class C preload is applied at the factory, ensuring consistent starting torque and axial rigidity. |
| P4A | Denotes an ultra-precision tolerance class with extremely tight limits on bore, outside diameter, and width tolerances for superior running accuracy. |
7201 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust internal geometry are engineered to handle significant combined loads. The phenolic cage contributes to stable operation under high-speed conditions.
- Ultra-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy.
- Optimized for High-Speed Operation: The lightweight phenolic cage and precision-ground chrome steel components enable a high limiting speed of 95,000 rpm, making it suitable for high-speed spindles.
- Universal Matchability: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various preloaded arrangements, offering design flexibility to achieve the desired system stiffness and performance.
7201 ACDGC/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where accuracy and speed are paramount. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring devices, optical scanners.
- High-Speed Motors: Servo motors, spindle drives.
- Robotics: Joints and arms requiring high precision and rigidity.
