7015 ACDGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7015 ACDGA/HCP4AL
Basic Information
System of measurement
Metric
Weight
0.53 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
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
11115 lbf
Radial static load rating
10462 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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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In Stock
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7015 ACDGA/HCP4AL Bearing Product Overview & Core Advantages
The 7015 ACDGA/P4A is a single row angular contact ball bearing designed for ultra-high precision and performance applications. Positioned in the P4A super precision tolerance class, it excels where exceptional rotational accuracy, high rigidity, and superior running capabilities are required. Its defining feature is the 25° contact angle and universal matchable (SU) design, allowing two bearings to be paired in a back-to-back or face-to-face arrangement to optimally handle combined loads (radial and axial). The use of a phenolic cage and ceramic balls contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for demanding, high-reliability machinery.
7015 ACDGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing designation; 75mm bore, 115mm OD, 20mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Describes the internal design, typically indicating a specific internal geometry and Extra light (A) preload. |
| /P4A | Denotes the super precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
7015 ACDGA/HCP4AL Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and superior system stability.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant axial loads in one direction while also accommodating radial loads, making it suitable for combined load conditions.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduces centrifugal forces, lowers operating temperature, and enables a high limiting speed of 31,000 rpm.
- Universal Matching Capability (SU): As a universal matchable bearing, two 7015 ACDGA/P4A bearings can be mounted together as a set to handle bidirectional axial loads and provide increased moment rigidity without complex calculations for preload.
- Extended Service Life: Ceramic balls offer superior wear resistance, lower thermal expansion, and electrical insulation properties compared to steel, significantly enhancing bearing longevity in harsh conditions.
7015 ACDGA/HCP4AL Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for applications requiring maximum accuracy and speed, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotic Drives and Gearboxes
- High-Frequency Motors and Spindles
- Aerospace & Defense Systems (Gyroscopes, navigation instruments)
- Medical Equipment (Dental handpieces, CNC surgical devices)
