7012 CB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7012 CB/P4A
Basic Information
System of measurement
Metric
Weight
0.45 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
95 mm
Outside diameter tolerance
-0.008mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.747 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3285 lbf
Radial static load rating
2700 lbf
Limiting speed
30 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:
$ 417.34
/ each
In Stock
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7012 CB/P4A Bearing Product Overview & Core Advantages
The 7012 CB/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. This metric bearing features a 15° contact angle and is supplied with a light preload (CB), making it ideally suited for applications where minimal deflection under combined loads is critical. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy, low noise, and high-speed capability, supported by a lightweight phenolic cage.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7012 | Basic bearing series and size designation | Indicates a 60mm bore, 95mm OD, and 18mm width. |
| CB | Light Preload | Provides increased stiffness and controls axial and radial play, enhancing positional accuracy. |
| P4A | Tolerance Class (P4 / ABEC-7) | Guarantees extremely tight dimensional and running accuracy for high-precision applications. |
7012 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 15° contact angle and CB preload provides superior system stiffness, minimizing axial and radial deflection under combined loads (radial and axial).
- Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 30,000 rpm. This makes it an excellent high-speed bearing.
- Superior Load Capacity: With a dynamic load rating of 3285 lbf and a static load rating of 2700 lbf, it reliably handles significant combined loads.
- Precision-Grade Components: Manufactured from chrome steel for both rings and balls, and built to P4 tolerance, it ensures long-term accuracy and reliability in demanding conditions.
7012 CB/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Robotic Drives and Actuators
- Medical and Dental Equipment
