7216 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7216 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7216 ACDGA/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class with an Extra Light (Class A) preload, this bearing delivers superior running precision and minimal deflection under load. Its 25° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously, while the Universal Matchable (SU) designation allows for precise bearing arrangement in sets of three for maximum system stiffness. The phenolic cage and factory lubrication enable reliable operation at high speeds up to 28,000 rpm.
7216 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Performance Impact |
|---|---|---|
| AC | Angular Contact Design | Optimized for combined radial and axial loads |
| DGA | Universal Matchable Bearing (SU designation) | Enables precise preload control in matched sets |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for critical applications |
7216 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
Optimized Load Capacity: The 25° contact angle and 17 precision balls provide excellent combined load capacity with dynamic rating of 18,428 lbf and static rating of 16,200 lbf.
High-Speed Performance: The phenolic resin cage offers superior strength-to-weight ratio, enabling reliable operation at limiting speeds of 28,000 rpm while reducing centrifugal forces.
Precision Preload: Extra Light (Class A) preload minimizes axial and radial play, delivering enhanced system rigidity and positioning accuracy for demanding applications.
Premium Materials: Chrome steel rings and balls provide excellent wear resistance and fatigue life, operating effectively within a temperature range of -30°C to 110°C.
7216 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional rigidity and accuracy
- Precision Gearboxes: Industrial transmission systems demanding high-speed capability and load capacity
- Robotic Systems: Articulation joints and rotary units in industrial automation equipment
- Medical Equipment: High-speed dental handpieces and surgical tool drives
- Aerospace Systems: Actuator mechanisms and control surface applications
- Test & Measurement Equipment: Precision rotary tables and coordinate measuring machines
