S7015 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7015 ACE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.23 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
40 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
9068 lbf
Radial static load rating
9338 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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S7015 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The S7015 ACE/HCP4ADGA is a high-precision double row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This sealed bearing is distinguished by its extra light preload (Class A) and universal matchable (SU) design, allowing for simplified mounting in various configurations. Its core advantage lies in its ability to simultaneously support substantial combined loads—both radial and bidirectional axial loads—delivered through its optimized 25° contact angle. The combination of a phenolic cage and ceramic balls enables superior high-speed performance and operational stability, making it an ideal solution for compact, high-rigidity spindle designs.
S7015 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Basic bearing series and size designation (75mm bore, 115mm OD). |
| ACE | Designates 25° contact angle and specific internal design optimizations. |
| HC | Indicates the use of Hybrid Ceramic balls for reduced friction and higher speed capability. |
| P4A | Specifies the high-precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DGA | Likely refers to the specific seal type and grease lubrication used for sealed, maintenance-free operation. |
S7015 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides a significantly wider effective spread of rolling elements compared to single row bearings, resulting in superior rigidity and the ability to handle heavy combined loads.
- High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduce centrifugal forces and friction, enabling a high limiting speed of 22,000 rpm. This hybrid construction also mitigates heat generation.
- Precision & Accuracy: Manufactured to P4A tolerance class with a controlled extra light preload, this bearing ensures minimal runout and vibration, which is critical for achieving high positional accuracy in precision machinery.
- Maintenance-Free Operation: The integral seals and factory-applied grease protect against contamination and provide long-term lubrication within the specified temperature range of -30°C to 110°C, reducing lifecycle costs.
- Universal Matching (SU): This feature allows any two bearings to be mounted together in any combination (face-to-face, back-to-back, or tandem) without a loss in preload, offering exceptional flexibility in machine design and assembly.
S7015 ACE/HCP4ADGA Bearing Typical Application Areas
This bearing's combination of high precision, speed, and rigidity makes it ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanner rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors & Spindles: Where minimal vibration and high rotational accuracy are paramount.
