7216 CDGD/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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Product Overview and Core Advantages
The 7216 CDGD/P4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As a single bearing with universal matching capability (SU), it can be paired with another identical bearing to form a preloaded duplex set capable of handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy and is preloaded to Heavy / Class D for maximum system stiffness, making it ideal for high-precision, high-reliability machinery.
7216 CDGD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing designation: 80 mm bore, 140 mm OD, 26 mm width. |
| C | 15° contact angle. |
| DG | Universal Matchable bearing. Two bearings can be face-to-face (DF) or back-to-back (DB) mounted. |
| D | Heavy preload / Class D. |
| P4A | High precision tolerance class exceeding ABEC 7, ensuring minimal runout and vibration. |
Structural Features and Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 15° contact angle and Heavy preload provides exceptional resistance to deflection under combined loads, ensuring precise shaft positioning and system stability.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional control on the bore, outside diameter, and width. The phenolic cage offers low weight and excellent high-speed performance, contributing to a limiting speed of 28,000 rpm.
Universal Matching (SU): This feature allows for simplified inventory and assembly of preloaded bearing sets, providing optimized performance in duplex configurations (DF, DB) without selective mounting.
Material and Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue life. The bearing is supplied lubricated for immediate operation.
7216 CDGD/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic and Automation Systems
- Medical and Dental Equipment
