7211 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7211 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
1.23 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
42 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
20340 lbf
Radial static load rating
19125 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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:
$ 225.37
/ each
In Stock
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7211 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7211 CD/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. As a universal matchable (SU) bearing supplied in a light preload (Class B) duplex set, it excels at handling combined radial and axial loads simultaneously. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and precision machinery where rigidity and minimal runout are critical.
7211 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7211 | Basic bearing series: 55 mm bore, 100 mm OD, 42 mm width |
| CD | Contact angle of 15° and specific internal design |
| P4A | High-precision tolerance class (exceeds ABEC 7) |
| DGB | Universal Matchable (SU) arrangement in duplex pair with light preload |
7211 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex pair configuration provides superior stiffness, enabling stable operation under combined loads. With a dynamic load rating of 20,340 lbf and static rating of 19,125 lbf, it delivers reliable performance in demanding conditions.
- Optimized High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces. Combined with the 15° contact angle, this enables a limiting speed of 34,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal vibration and precise rotational accuracy.
- Universal Matching Capability: As Universal Matchable (SU) bearings, they can be arranged in various configurations (DB, DF, DT) without selective mounting, simplifying installation and maintenance.
7211 CD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Instrumentation: Measuring equipment, optical scanners
- High-Speed Automation: Industrial robots, CNC machining centers
- Medical Equipment: Dental handpieces, laboratory centrifuges
- Aerospace Systems: Gyroscopes, navigation instruments
