7012 ACD/P4ATGA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7012 ACD/P4ATGA Bearing Product Overview & Core Advantages
The 7012 ACD/P4ATGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined loads—simultaneously handling significant radial and axial forces—this bearing features a 25° contact angle optimized for high axial load capacity. Manufactured to P4A tolerance class, it delivers superior running accuracy and dimensional stability. Its universal matchable (SU) design allows for flexible mounting configurations in preloaded sets, making it ideal for high-precision, high-rigidity systems such as machine tool spindles and precision rotary tables.
7012 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with 25° contact angle |
| D | Universal Matchable (SU) arrangement for paired mounting |
| P4A | High precision tolerance class with enhanced dimensional accuracy |
| TGA | Phenolic cage material and prelubricated configuration |
7012 ACD/P4ATGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 25° contact angle and 19 chrome steel balls provide superior combined load handling, with dynamic load rating of 18,720 lbf and static load rating of 22,500 lbf.
High-Speed Performance: The phenolic cage and optimized internal geometry enable a limiting speed of 39,000 rpm, making it suitable for high-speed applications.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be mounted in various preloaded arrangements (DB, DF, DT) to achieve optimal system stiffness.
Premium Material Selection: Constructed from chrome steel rings and balls with phenolic cage, providing excellent durability and thermal stability within the operating temperature range of -30°C to 110°C.
7012 ACD/P4ATGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional accuracy and rigidity
- Precision Rotary Tables: Indexing and positioning systems demanding high axial stiffness
- High-Speed Machining Centers: Applications requiring both high rotational speeds and precise positioning
- Industrial Robotics: Precision joints and rotary actuators in automated systems
- Medical Equipment: High-precision imaging systems and laboratory automation equipment
- Aerospace Components: Guidance systems and precision instrumentation requiring reliable performance under combined loads
