S7015 ACE/P4AQBCB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7015 ACE/P4AQBCB
Basic Information
System of measurement
Metric
Weight
2.68 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
80 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14625 lbf
Radial static load rating
18338 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
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
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S7015 ACE/P4AQBCB Bearing Product Overview & Core Advantages
The S7015 ACE/P4AQBCB is a super-precision quadruplex back-to-back angular contact ball bearing designed for the most demanding applications. Engineered to P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its core advantage lies in its matched quadruplex arrangement, which provides superior rigidity and the capacity to handle complex combined loads (radial and axial) from multiple directions simultaneously. This configuration is ideal for high-precision, high-stiffness spindles requiring maximum performance.
S7015 ACE/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Bearing series and size designation (75mm bore, 115mm OD). |
| ACE | Internal design optimized for high-speed operation and specific preload. |
| P4A | Indicates a super-precision tolerance class with even tighter running accuracy specifications than standard P4. |
| QBC | Denotes a Quadruplex Back-to-Back matched set of four bearings. |
| B | Specifies a Light preload (Class B) for optimal rigidity and minimal deflection under operational loads. |
S7015 ACE/P4AQBCB Bearing Structural Features & Performance Benefits
- Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined loads and moments. The 25° contact angle is optimized for high axial load capacity.
- Super-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving superior surface finishes and positioning accuracy.
- High-Speed Capability: The phenolic cage offers low weight and excellent performance at high speeds, contributing to the bearing's limiting speed of 28,000 rpm. The standard grease lubrication is suitable for this operational range.
- Sealed and Pre-Lubricated: As a sealed bearing, it is protected from contamination and comes pre-lubricated, facilitating installation and ensuring long-term, maintenance-free operation within its specified temperature range.
S7015 ACE/P4AQBCB Bearing Typical Application Areas
This bearing is specifically engineered for high-end machinery where ultimate precision, speed, and rigidity are non-negotiable. Key applications include:
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Speed Machining Centers
- Advanced Industrial Robotics and precision rotary axes
