7015 CD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7015 CD/HCP4ATBTA
Basic Information
System of measurement
Metric
Weight
1.58 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7015 CD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7015 CD/HCP4ATBTA is a precision angular contact ball bearing configured as a matched triplex set in a Back-to-Back (TBT) arrangement. Engineered for the most demanding applications, this metric series bearing is characterized by its extra light preload (Class A) and P4A super-precision tolerance. Its design is optimized to handle complex combined loads, providing exceptional rotational accuracy and system rigidity. The use of ceramic balls and a phenolic cage contributes to superior high-speed performance, low heat generation, and extended service life, making it ideal for high-reliability, high-precision machinery.
7015 CD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7015 CD/HCP4ATBTA is decoded as follows:
- 7015: Basic series designation, indicating a 75mm bore and 115mm outside diameter.
- C: Signifies a 15° contact angle, optimized for high-speed operation and moderate axial loads.
- D: Indicates the bearing is supplied with an extra light preload (Class A).
- HC: Denotes the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Specifies a super-precision tolerance class exceeding ABEC 7 standards, ensuring minimal runout and vibration.
- TBT: Defines the matched set arrangement as Triplex Back-to-Back. This configuration provides maximum rigidity against moment loads.
- A: Confirms the specific preload classification within the matched set.
7015 CD/HCP4ATBTA Bearing Structural Features & Performance Benefits
- Unmatched Rigidity and Stability: The triplex back-to-back (TBT) arrangement of three bearings creates an exceptionally stiff bearing system, effectively resisting complex moment and tilting loads. This is critical for maintaining precision under heavy combined radial and axial loads.
- Superior High-Speed Capability: The combination of hybrid ceramic balls (lower density, reduced centrifugal force) and a lightweight, robust phenolic resin cage allows for a very high limiting speed of 22,000 rpm. This setup minimizes friction, heat buildup, and cage wear.
- Precision and Accuracy: Manufactured to P4A tolerance class, this bearing guarantees ultra-precise running accuracy, low noise, and minimal vibration, which is essential for applications like machine tool spindles.
- Optimized Load Capacity: With a 15° contact angle and a robust internal geometry, the bearing offers an excellent balance between radial and axial load ratings (Dynamic: 25,650 lbf, Static: 32,850 lbf).
- Pre-lubricated for Immediate Use: The bearing comes lubricated from the factory, ready for installation and initial operation within its specified temperature range of -30°C to 110°C.
7015 CD/HCP4ATBTA Bearing Typical Application Areas
This high-performance precision angular contact ball bearing is specifically designed for advanced industrial applications requiring extreme accuracy, high speed, and rigid support, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- High-Performance Pumps and Compressors
