7015 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7015 CDGA/P4A Bearing Product Overview & Core Advantages
The 7015 CDGA/P4A is a single-row angular contact ball bearing designed for high-precision and high-speed applications. Engineered to accommodate primarily axial loads in one direction and combined loads, it features an extra light preload (Class A) and a P4A tolerance class for exceptional running accuracy. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs to achieve optimal rigidity and performance. Constructed from chrome steel with a phenolic cage, this bearing delivers reliable operation in demanding conditions.
7015 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series, indicating a 75 mm bore and 115 mm outside diameter. |
| C | Specifies a 15° contact angle, optimized for high-speed performance and moderate axial load capacity. |
| DG | Indicates the bearing is universally matchable (SU). Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to support combined or moment loads. |
| A | Denotes an extra light preload (Class A), which minimizes friction and heat generation, making it ideal for high-speed applications requiring high running accuracy. |
| /P4A | Specifies a high-precision tolerance class (P4A), exceeding ABEC-7 standards, which ensures extremely tight dimensional and running accuracy for critical applications. |
7015 CDGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a 15° contact angle, phenolic cage, and extra light preload enables a high limiting speed of 24,000 rpm, reducing centrifugal forces and operational temperatures.
Precision & Rigidity: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, this bearing provides superior running accuracy and system stability under load.
Optimized Load Capacity: The single-row angular contact design efficiently handles high axial loads in one direction and combined (radial and axial) loads. The universal matchable (SU) feature allows for pairing to create a rigid bearing set capable of supporting complex load configurations, including moment loads.
Material & Lubrication: Components made from chrome steel offer high hardness and durability. The bearing is pre-lubricated for immediate use and operates effectively within a temperature range of -30°C to 110°C.
7015 CDGA/P4A Bearing Typical Application Areas
The 7015 CDGA/P4A is ideally suited for high-precision machinery and equipment requiring high rotational speeds and accuracy, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
