7015 CE/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7015 CE/P4ATBTB
Basic Information
System of measurement
Metric
Weight
1.94 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
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12578 lbf
Radial static load rating
14738 lbf
Limiting speed
24 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7015 CE/P4ATBTB Bearing Product Overview & Core Advantages
The 7015 CE/P4ATBTB is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This bearing is supplied as a triplex back-to-back (TBT) matched set, consisting of three individual bearings pre-configured to deliver superior performance under combined loads. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery. The light preload (Class B) minimizes deflection and enhances system rigidity right from installation.
7015 CE/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series and size designation (75mm bore, 115mm OD, 20mm width per bearing). |
| CE | High-precision bearing with a 15° contact angle. |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
| TBT | Specifies the Triplex Back-to-Back matched arrangement of three bearings. |
7015 CE/P4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The triplex back-to-back (TBT) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined radial and axial loads from both directions. This configuration provides superior moment stiffness, critical for maintaining precision under complex loading conditions.
- High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio, reduced friction, and is ideal for high-speed operation, contributing to the bearing's limiting speed of 24,000 rpm.
- Precision Performance: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures minimal runout and vibration, which is paramount for applications requiring high rotational accuracy.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, the bearing provides high fatigue life and durability. The open design allows for customized lubrication schemes to match specific operational requirements.
7015 CE/P4ATBTB Bearing Typical Application Areas
This precision angular contact ball bearing set is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- High-Frequency Machinery: Applications where minimal vibration and high running accuracy are critical.
