S7015 CD/P4ATBTB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7015 CD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
1.92 kg
Tolerance class
P4A
Seal type
Sealed
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
28 X 1000 rpm
Lubrication
Grease
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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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S7015 CD/P4ATBTB Bearing Product Overview & Core Advantages
The S7015 CD/P4ATBTB is a super-precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. Engineered for the most demanding applications, this bearing delivers exceptional rotational accuracy and system rigidity. Its primary advantage lies in its ability to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it an ideal choice for high-speed spindles requiring maximum stiffness and minimal runout.
S7015 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
The model designation S7015 CD/P4ATBTB provides detailed technical specifications:
- S70: Indicates a super-precision angular contact ball bearing series.
- 15: Specifies the bore diameter code (15 x 5 = 75 mm).
- CD: Denotes a 15° contact angle and specific internal design optimized for high rigidity and speed.
- P4A: Represents the tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional dimensional and running accuracy.
- TBT: Signifies the bearing is supplied as a Triplex Back-to-Back pre-matched set of three bearings, designed to work together for superior axial and moment load capacity.
- Sealed / Grease Lubricated: The bearing comes sealed and pre-lubricated with grease for long-term, maintenance-free operation.
S7015 CD/P4ATBTB Bearing Structural Features & Performance Benefits
- Ultra-High Rigidity & Load Capacity: The triplex back-to-back (TBT) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined loads and moment loads, which is critical for maintaining machining accuracy.
- Super-Precision Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal vibration and exceptional running accuracy for superior surface finishes and positioning precision.
- Optimized High-Speed Capability: The 15° contact angle and phenolic resin cage are engineered for stable operation at high rotational speeds, with a limiting speed of 28,000 rpm.
- Pre-Matched & Ready-to-Install: Supplied as a factory-matched set, the three bearings are perfectly calibrated to share loads evenly, eliminating complex matching procedures and ensuring optimal performance out-of-the-box.
- Sealed & Lubricated for Life: The integral seals retain grease and exclude contaminants, providing long-lasting, maintenance-free operation in a wide temperature range from -30°C to 110°C.
S7015 CD/P4ATBTB Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery requiring the highest levels of precision and speed:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal, external, and surface grinding applications.
- High-Frequency Machining Centers
- PCB Drilling & Milling Spindles
- Other Precision Rotary Equipment demanding extreme rigidity and accuracy.
