S7015 CD/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7015 CD/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
2.15 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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
31500 lbf
Radial static load rating
44100 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
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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S7015 CD/HCP4AQBCA Bearing Product Overview & Core Advantages
The S7015 CD/HCP4AQBCA is a high-precision quadruplex back-to-back angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched set of four bearings delivers superior performance in handling combined radial and axial loads from both directions simultaneously. Its construction with ceramic balls and a P4A super-precision tolerance class ensures low heat generation, high-speed capability, and outstanding operational reliability in high-precision, high-rigidity systems.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Bearing series and size designation (75mm bore, 115mm OD) |
| CD | 15° contact angle design |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | Super precision tolerance class (superior to ABEC 7) |
| QBC | Quadruplex Back-to-Back arrangement (4 bearings matched set) |
S7015 CD/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The quadruplex back-to-back configuration creates an extremely rigid bearing system that minimizes deflection under heavy combined loads, making it ideal for applications requiring high positional accuracy.
- Superior Speed Performance: The combination of ceramic balls (lower density than steel), phenolic cage, and precise P4A tolerances enables operation at high rotational speeds up to 28,000 rpm while maintaining thermal stability.
- Enhanced Load Capacity: Engineered to handle significant radial and bidirectional axial loads simultaneously, with a dynamic load rating of 31,500 lbf and static load rating of 44,100 lbf.
- Long-Term Reliability: The sealed design with factory-applied grease lubrication provides contamination protection and maintenance-free operation within the specified temperature range of -30°C to 110°C.
- Precision Engineering: Manufactured to P4A tolerance class with extra light preload (Class A), ensuring minimal runout and vibration for superior performance in precision applications.
S7015 CD/HCP4AQBCA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles for milling, grinding, and drilling operations
- Precision CNC Machining Centers requiring extreme accuracy and rigidity
- High-Performance Industrial Pumps and compressors
- Aerospace and Defense Systems including gyroscopes and navigation equipment
- Medical Equipment such as high-speed dental handpieces and surgical tools
- Semiconductor Manufacturing Equipment requiring ultra-precise motion control
