7015 CD/P4AQBCB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7015 CD/P4AQBCB
Basic Information
System of measurement
Metric
Weight
2.51 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
80 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
31500 lbf
Radial static load rating
44100 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7015 CD/P4AQBCB Bearing Product Overview & Core Advantages
The 7015 CD/P4AQBCB is a precision quadruplex matched set of angular contact ball bearings, designed for applications demanding the highest levels of rigidity and rotational accuracy. This P4A tolerance class set, arranged in a Back-to-Back (QBC) configuration, is engineered to handle combined loads—significant radial and axial loads from both directions—simultaneously. Its preloaded, matched design ensures exceptional operational stability and positional accuracy, making it ideal for high-speed, high-precision spindles and other critical machinery where uncompromising performance is required.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series and size designation (75mm bore, 115mm OD). |
| CD | Specifies a duplex bearing with a specific contact angle and internal design. In this context, it is the building block for the matched set. |
| P4A | Indicates an ultra-high precision tolerance class, exceeding ABEC 7 standards, for minimal runout and vibration. |
| QBC | Denotes the matched arrangement as a Quadruplex Back-to-Back set. This configuration provides high moment stiffness. |
| B | Signifies the preload level as Light / Class B, optimizing the bearing for high-speed operation with minimal friction and heat generation. |
7015 CD/P4AQBCB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The Quadruplex Back-to-Back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise tool or workpiece positioning.
- Superior Load Capacity: The 15° contact angle and the use of four bearings in a matched set provide a high dynamic and static load rating (31,500 lbf / 44,100 lbf), enabling reliable performance under demanding combined loads.
- Optimized High-Speed Performance: The phenolic cage offers excellent strength-to-weight ratio and smooth operation at the high limiting speed of 22,000 rpm. The light preload (Class B) further minimizes friction and heat build-up.
- High-Precision Operation: Manufactured to P4A tolerance standards with tight dimensional control on the bore, outside diameter, and width, this bearing set guarantees minimal runout for superior rotational accuracy.
- Ready-to-Install and Lubricated: The set is supplied pre-lubricated and matched, simplifying installation and ensuring immediate, optimal performance out-of-the-box.
7015 CD/P4AQBCB Bearing Typical Application Areas
This precision bearing set is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motorized spindles.
- Robotics: High-accuracy rotary joints and arms.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
