7216 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7216 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
1.46 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
17.462 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18428 lbf
Radial static load rating
16200 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7216 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7216 ACDGC/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a single bearing from a Universal Matchable (SU) set, it is designed to accommodate combined radial and axial loads simultaneously. Its defining characteristics include a 25° contact angle and Moderate (Class C) preload, delivering high system stiffness and precise shaft positioning. Manufactured to the stringent P4A tolerance class, this bearing is ideal for high-speed, high-reliability machinery where uncompromising performance is critical.
7216 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| AC | Angular Contact design | Optimized for combined loads. |
| DGC | Duplex arrangement, Ground backs, and Moderate (Class C) preload | Delivers high rigidity and precise axial positioning in a pre-configured, ready-to-install unit. |
| P4A | High-Precision Tolerance Class | Ensures extremely tight dimensional and running accuracy for superior performance in demanding applications. |
7216 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle and factory-set Moderate preload (Class C) eliminates internal clearance, resulting in a very stiff bearing system that minimizes deflection under load and ensures precise shaft guidance.
- Superior Load Capacity: The angular contact design is optimized to handle significant combined radial and axial loads, with a dynamic load rating of 18,428 lbf and a static load rating of 16,200 lbf.
- Optimized High-Speed Performance: The lightweight, robust phenolic cage ensures stable operation and low centrifugal forces, contributing to the high limiting speed of 28,000 rpm. The open seal type allows for efficient lubrication management in high-speed systems.
- Universal Matching Capability (SU): As part of a universal matching set, multiple 7216 ACDGC/P4A bearings can be mounted together in various configurations (e.g., back-to-back, face-to-face) to handle complex load cases without requiring selective assembly.
7216 ACDGC/P4A Bearing Typical Application Areas
This high-precision, high-speed angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: Provides the necessary rigidity and accuracy for high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Essential for applications requiring ultra-fine surface finishes and tight tolerances.
- High-Frequency Motors and Spindles: Capable of sustaining the high rotational speeds and dynamic loads.
- Industrial Pumps and Compressors: Used in high-performance models where reliability and speed are paramount.
