7015 CD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7015 CD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
1.88 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
60 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
25650 lbf
Radial static load rating
32850 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
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/P4ATBTA Bearing Product Overview & Core Advantages
The 7015 CD/P4ATBTA is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This triplex back-to-back (TBT) matched set provides superior stiffness and load-carrying capacity, making it ideal for high-performance machine tool spindles and other precision equipment. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, while the extra light preload (Class A) minimizes deflection under operational loads, contributing to outstanding rotational precision and system stability.
7015 CD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7015 CD/P4ATBTA is decoded as follows:
- 7015: Basic series designation, indicating a 75mm bore and 115mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial loads.
- D: Indicates the bearing has an enhanced internal design for increased load capacity.
- P4A: Specifies a super-precision tolerance class exceeding ABEC 7/ISO P4 standards, with additional running accuracy requirements.
- TBT: Identifies the bearing as part of a Triplex Back-to-Back matched arrangement of three bearings.
- A: Specifies an Extra Light Preload (Class A) applied to the matched set.
7015 CD/P4ATBTA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The triplex back-to-back (TBT) arrangement creates an extremely rigid bearing system that effectively resists moment loads and minimizes shaft deflection, which is critical for maintaining machining accuracy.
- Superior Load Capacity: The angular contact design enables the bearing to support combined loads (radial and axial) simultaneously. The dynamic and static load ratings of 25,650 lbf and 32,850 lbf, respectively, ensure reliable performance under demanding conditions.
- Optimized High-Speed Performance: The 15° contact angle and lightweight phenolic cage reduce centrifugal forces and friction, allowing for a high limiting speed of 22,000 rpm. The phenolic cage also offers excellent performance under marginal lubrication conditions.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and precise dimensional control, which is essential for applications requiring high rotational accuracy.
7015 CD/P4ATBTA Bearing Typical Application Areas
This bearing is engineered for high-precision, high-speed applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme accuracy and smooth operation.
- High-Frequency Machining Centers
- Other Precision Rotary Equipment where maximum system rigidity and running accuracy are paramount.
