7212 CD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7212 CD/P4ADT
Basic Information
System of measurement
Metric
Weight
1.62 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
44 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
21060 lbf
Radial static load rating
20925 lbf
Limiting speed
32.5 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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7212 CD/P4ADT Bearing Product Overview & Core Advantages
The 7212 CD/P4ADT is a precision angular contact ball bearing supplied as a duplex tandem (DT) matched pair. This configuration is engineered to deliver exceptional performance in applications requiring high rigidity and the capacity to handle significant axial loads in a single direction. Manufactured to the stringent P4A tolerance class, it guarantees superior running accuracy, making it ideal for high-speed spindles and other precision machinery where uncompromising reliability is critical.
7212 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series, indicating a 60 mm bore, 110 mm OD, and 44 mm width. |
| C | Specifies a 15° contact angle, optimized for high axial load capacity. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | Denotes a high-precision tolerance class exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration. |
| DT | Defines the duplex arrangement as Tandem, where the two bearings are mounted to share axial loads in the same direction. |
7212 CD/P4ADT Bearing Structural Features & Performance Benefits
- Duplex Tandem Design: The two bearings are preloaded and matched (DT) at the factory. This arrangement significantly increases system rigidity and multiplies the axial load capacity in one direction, preventing axial play under load.
- Superior Precision: The P4A tolerance class ensures extremely tight dimensional and running accuracy, which is fundamental for applications demanding high rotational precision and low vibration.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and 15° contact angle contribute to a high limiting speed of 32,500 rpm.
- Robust Load Ratings: With a dynamic load rating of 21,060 lbf and a static load rating of 20,925 lbf, this bearing set is built to handle demanding combined radial and axial loads.
- Premium Materials: Manufactured from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life.
7212 CD/P4ADT Bearing Typical Application Areas
This precision duplex bearing set is specifically designed for high-performance applications, including:
- Machine Tool Spindles (e.g., milling, grinding, and lathe spindles)
- High-Frequency Spindles for PCB drilling and routing
- Precision Pumps and Compressors
- Robotic Drives and Servo Motors
- Other precision rotary equipment requiring high rigidity and axial stiffness
