S7216 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7216 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
1.51 kg
Tolerance class
P4A
Seal type
Sealed
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
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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
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S7216 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7216 ACDGA/P4A is a high-precision double row angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. Engineered with an extra light preload (Class A) and manufactured to P4A super precision tolerance, this bearing is optimized for high-speed operation and superior rotational stability. Its double row design enables it to support combined loads—significant radial loads alongside substantial bidirectional axial loads—simultaneously, making it an ideal, compact solution for high-reliability spindles and precision machinery.
S7216 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| AC | Angular Contact design with a 25° contact angle. | Optimized for handling combined radial and axial loads. |
| DGA | Double Row, Universal Matchable (SU) arrangement. | Provides high rigidity and simplified mounting in sets of two. |
| P4A | Super Precision Tolerance Class. | Ensures extremely low runout and vibration for high-precision applications. |
S7216 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and robust construction provide superior stiffness, enabling stable support under heavy combined loads. The 25° contact angle is specifically engineered to efficiently manage bidirectional axial forces.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 28,000 rpm. This makes it a true high-speed bearing.
- Precision & Longevity: Manufactured to P4A tolerance with a consistent extra light preload, this bearing delivers exceptional running accuracy and minimal heat generation. The sealed construction retains factory-applied grease lubrication, protecting against contamination and ensuring long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7216 ACDGA/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications where high speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric motors requiring minimal runout.
- Medical Equipment: High-speed rotors in dental handpieces and centrifuges.
