7215 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7215 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
2.42 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
50 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
26325 lbf
Radial static load rating
28125 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
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
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In Stock
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7215 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7215 CD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and is preloaded to Class C (Moderate), ensuring minimal axial and radial play under operating conditions. Its configuration is optimized to handle combined loads—simultaneous radial and axial forces—making it an ideal choice for high-precision, high-rigidity systems where positioning accuracy is critical.
7215 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7215 | Basic bearing series, indicating a 75 mm bore, 130 mm OD, and 50 mm width. |
| C | 15° contact angle, optimized for carrying significant axial loads. |
| D | Indicates a duplex pair of bearings. |
| P4A | High-precision tolerance class exceeding ABEC 7, ensuring extremely tight dimensional and running accuracy. |
| DB | Back-to-Back arrangement, providing high moment rigidity and excellent operational stability. |
7215 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and shaft deflection, crucial for maintaining precision in high-load applications.
- Superior Load Capacity: With a 15° contact angle and duplex pairing, this bearing is engineered to handle substantial combined radial and axial loads simultaneously. The dynamic load rating of 26,325 lbf and static load rating of 28,125 lbf attest to its robust performance.
- Precision & Speed Performance: Manufactured to P4A tolerance class and featuring a lightweight phenolic cage, this bearing achieves a high limiting speed of 22,000 rpm while maintaining exceptional running accuracy and low vibration.
- Optimized Material Selection: The use of chrome steel for rings and balls, combined with a phenolic cage, ensures high durability, wear resistance, and stable operation across the specified temperature range (-30°C to 110°C).
7215 CD/P4ADBC Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where precision and rigidity are non-negotiable. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy.
- Precision Gearboxes: Especially in industrial robotics and automation systems.
- High-Frequency Motors and Spindles: Where high rotational speeds and minimal runout are critical.
- Medical and Laboratory Equipment: Such as centrifuges and precision scanners.
- Aerospace Actuation Systems: For control surfaces and other high-reliability mechanisms.
