7212 CD/P4ADFC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7212 CD/P4ADFC
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 Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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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7212 CD/P4ADFC Bearing Product Overview & Core Advantages
The 7212 CD/P4ADFC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a Face-to-Face (DF) matched arrangement with a Moderate (Class C) preload, enabling it to handle combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy and is ideally suited for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount.
7212 CD/P4ADFC 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-speed operation and axial load capacity. |
| D | Indicates the bearing is part of a Duplex (matched) set. |
| P4A | Denotes a high precision tolerance class, exceeding standard ABEC-7 (P4) specifications for enhanced running accuracy. |
| DF | Specifies the Face-to-Face mounting arrangement of the duplex pair, providing high moment rigidity. |
| C (in Preload) | Indicates a Moderate preload, which increases system stiffness and minimizes axial and radial play under operational conditions. |
7212 CD/P4ADFC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement creates a highly rigid bearing system capable of withstanding significant combined loads (radial and bidirectional axial loads) and moments. The moderate preload ensures minimal deflection under load, enhancing machining accuracy and system stability.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures exceptional running precision. The lightweight phenolic resin cage is ideal for high-speed applications, reducing centrifugal forces and allowing for a limiting speed of 32,500 rpm.
- Superior Material & Construction: Components are made from high-grade chrome steel, providing excellent durability and fatigue resistance. The open seal type allows for efficient lubrication management in controlled environments, optimizing performance.
7212 CD/P4ADFC Bearing Typical Application Areas
This precision duplex bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Industrial Pumps & Compressors: Where high axial and radial rigidity is required.
- Robotics & Automation: High-accuracy rotary joints and axes.
