7212 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7212 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7212 ACDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 25° contact angle and Moderate (Class C) preload, it is engineered to handle combined loads efficiently, supporting significant radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy and high-speed capability, making it ideal for high-precision, high-reliability machinery. Its universal matchable (SU) design allows for flexible mounting arrangements in sets.
7212 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing designation indicating a metric series angular contact ball bearing with a 60 mm bore, 110 mm OD, and 22 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGC | Designates a Universal Matchable (SU) bearing. Two bearings can be mounted in a back-to-back (DB) or face-to-face (DF) arrangement to accommodate combined loads. |
| P4A | Indicates a high-precision tolerance class, superior to ABEC-7. This ensures extremely tight dimensional and running accuracy for demanding applications. |
7212 ACDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and Moderate preload provide high axial and radial rigidity, enabling the bearing to withstand significant combined loads with minimal deflection.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation at high speeds, with a limiting speed of 36,000 rpm.
Precision Engineering: Manufactured to P4A tolerances with tight dimensional controls on the bore, outside diameter, and width for exceptional running accuracy and system performance.
Material Quality: Constructed from high-grade chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational life.
Universal Matching: The Universal Matchable (SU) feature allows for simplified procurement and assembly of preloaded bearing sets without the need for selective matching.
7212 ACDGC/P4A Bearing Typical Application Areas
The 7212 ACDGC/P4A is ideally suited for high-performance applications requiring precision and speed, including:
- Machine Tool Spindles (e.g., CNC machining centers, grinding spindles)
- High-Speed Motors and Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arms and Precision Automation Equipment
