7212 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7212 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.81 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.008mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12442 lbf
Radial static load rating
10125 lbf
Limiting speed
18 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 526.01
/ each
In Stock
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7212 ACD/P4A Bearing Product Overview & Core Advantages
The 7212 ACD/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it is optimized to handle combined loads, supporting significant radial loads and axial loads in one direction simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it guarantees ultra-precise running accuracy. Its phenolic resin cage and factory-applied lubrication contribute to superior high-speed performance, making it an ideal choice for high-reliability, high-rigidity spindle arrangements.
7212 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series; 60 mm bore, 110 mm OD, 22 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high internal capacity design, typically with larger or more balls. |
| P4A | Indicates P4 (ABEC-7) precision tolerance with specific running accuracy requirements. |
7212 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized internal geometry, including a 25° contact angle and a high ball count (16), provides excellent stiffness and high dynamic and static load ratings (12,442 lbf / 10,125 lbf), enabling stable operation under combined loads.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures dimensional stability and low friction at high speeds, supporting a limiting speed of 18,000 rpm. The contact angle is ideal for high-speed axial loads.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring minimal runout and vibration for ultra-precise applications.
- Optimized for Preload: The design is suitable for preloading, which eliminates internal clearance and further increases system rigidity and rotational accuracy.
7212 ACD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery requiring high speed, rigidity, and accuracy.
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motors.
- Industrial Pumps & Compressors: Applications with high axial and radial load demands.
- Robotics: High-precision joints and arm actuators.
