7215 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7215 CDGB/P4A
Basic Information
System of measurement
Metric
Weight
1.21 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
25 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16088 lbf
Radial static load rating
13950 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
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:
$ 195.06
/ each
In Stock
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7215 CDGB/P4A Bearing Product Overview & Core Advantages
The 7215 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single bearing from a universally matchable (SU) set of four, it excels in handling combined loads—simultaneously supporting significant radial loads and thrust loads in one direction. Its P4A tolerance class ensures ultra-precise running accuracy, while the light preload (Class B) minimizes deflection and optimizes performance in high-speed and high-rigidity scenarios. This makes it an ideal solution for machine tool spindles and other precision machinery.
7215 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7215 | Basic bearing designation: 75mm bore, 130mm OD, 25mm width. |
| CD | A 15° contact angle, optimized for high-speed operation and high thrust capacity. |
| GB | Indicates light preload (Class B), enhancing system rigidity and rotational accuracy. |
| P4A | Denotes a very high precision tolerance class, exceeding ABEC 7 standards for superior running accuracy. |
7215 CDGB/P4A Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry & Material: Manufactured from high-grade chrome steel for both rings and balls, ensuring durability and long service life. The phenolic resin cage provides stability and low friction at high speeds.
- High Rigidity & Load Capacity: The angular contact design and light preload deliver high system stiffness, effectively resisting operational deflection. With a dynamic load rating of 16,088 lbf and a static load rating of 13,950 lbf, it reliably handles demanding combined loads.
- Superior High-Speed Performance: The 15° contact angle and phenolic cage are engineered for a limiting speed of 22,000 rpm, making it suitable for demanding spindle applications.
- Precision & Interchangeability: As part of a Universal Matchable (SU) set, bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) without performance loss, simplifying installation and inventory management.
7215 CDGB/P4A Bearing Typical Application Areas
This precision bearing is engineered for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes.
- High-Speed Motors & Spindles: Used in electric motors and direct-drive systems.
- Precision Instrumentation: Critical components in measuring and testing equipment.
- Robotics: High-accuracy joints and arm assemblies.
