7212 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7212 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7212 ACDGA/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and superior running accuracy. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing is characterized by its P4A tolerance class and extra light preload (Class A), ensuring minimal deflection and exceptional rotational stability. Its compact design and universal matchable (SU) configuration allow for flexible mounting arrangements in complex spindle assemblies, making it ideal for high-reliability, high-speed machinery.
7212 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series and size designation (60mm bore, 110mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Specific internal design and preload specification (Extra light / Class A). |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7/ISO P4 standards for superior dimensional and running accuracy. |
7212 ACDGA/P4A Bearing Structural Features & Performance Benefits
The performance of the 7212 ACDGA/P4A is derived from its optimized construction:
- High Rigidity & Precision: The combination of a 25° contact angle and extra light preload provides high system rigidity and minimizes axial and radial play, which is critical for maintaining precision under load.
- Superior Load Capacity: Manufactured from high-grade chrome steel for rings and balls, this bearing offers a high dynamic load rating of 12,442 lbf and a static load rating of 10,125 lbf, reliably handling significant combined loads.
- High-Speed Capability: The lightweight, robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 36,000 rpm. The open design facilitates efficient lubrication management for thermal control.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be paired with other identical bearings in various arrangements (back-to-back, face-to-face, or tandem) to create a custom bearing set that meets specific application requirements for preload and stiffness.
7212 ACDGA/P4A Bearing Typical Application Areas
The 7212 ACDGA/P4A is specified for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines and precision grinding equipment.
- High-Frequency Motors: Spindles for electric motors operating at very high RPMs.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other precision instruments.
