7015 CD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7015 CD/P4ADBB
Basic Information
System of measurement
Metric
Weight
1.26 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
115 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
19170 lbf
Radial static load rating
22050 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7015 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7015 CD/P4ADBB is a duplex back-to-back (DB) angular contact ball bearing designed for applications requiring exceptional precision and rigidity. This P4A tolerance class bearing is preloaded and matched as a set, delivering superior running accuracy and stability. Its primary advantage lies in its ability to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it ideal for high-precision, high-stiffness rotational systems. The phenolic cage and light preload contribute to its excellent high-speed performance.
7015 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series, defining the boundary dimensions (75mm bore, 115mm OD, 40mm width). |
| C | Designates a 15° contact angle, optimized for high-speed operation and axial load capacity. |
| D | Indicates the bearing is part of a duplex pair (two bearings mounted together). |
| P4A | Specifies a high precision tolerance class, exceeding normal P4 standards for enhanced running accuracy. |
| DB | Denotes the Back-to-Back mounting arrangement, which provides high moment rigidity. |
| Light Preload / Class B | Specifies the preload level applied to the matched set, reducing axial play and increasing system stiffness. |
7015 CD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The duplex back-to-back (DB) arrangement creates a widely spaced load zone, significantly increasing the bearing's resistance to moment loads and providing exceptional system stiffness.
- Superior Load Handling: The 15° contact angle and duplex design enable the bearing set to carry substantial combined radial and axial loads from both directions simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the light preload ensures stable operation, allowing for a high limiting speed of 22,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional controls on bore, OD, and width, this bearing guarantees minimal runout and superior rotational accuracy.
- Material Integrity: Constructed from chrome steel for both rings and balls, ensuring high hardness, durability, and long service life under demanding conditions.
7015 CD/P4ADBB Bearing Typical Application Areas
This precision duplex bearing is engineered for high-performance applications where accuracy, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and high-torque transmission systems.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Such as high-speed centrifuges and imaging devices.
- Aerospace Actuation Systems: Where reliable performance under combined loads is critical.
