S7216 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7216 CDGA/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
15 °
Ball & Washer Dimensions
Ball diameter
17.462 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
19170 lbf
Radial static load rating
16875 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
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
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In Stock
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S7216 CDGA/P4A Bearing Product Overview & Core Advantages
The S7216 CDGA/P4A is a precision single-row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. Positioned in the P4A super-precision tolerance class, it delivers superior running accuracy and dimensional stability. Its 15° contact angle is optimized to support significant combined loads, efficiently handling both radial and unidirectional axial forces. The bearing features a lightweight phenolic cage and comes pre-lubricated with grease, making it an ideal, ready-to-install solution for high-precision spindles and other critical machinery requiring high reliability and long service life.
S7216 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7216 CDGA/P4A can be broken down as follows to reveal its technical specifications:
- S7: Series designation, indicating a high-precision angular contact bearing.
- 216: Size code; Bore diameter: 80 mm, Outside diameter: 140 mm, Width: 26 mm.
- C: 15° contact angle.
- DG: Polyamide (Phenolic) cage.
- A: Extra light preload (Class A).
- P4A: Tolerance class exceeding ABEC 7/ISO P4, specifying extremely tight dimensional and running accuracy tolerances.
S7216 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A super-precision standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for superior machining quality and positional accuracy.
- Optimized Load Capacity: The 15° contact angle provides an excellent balance, enabling the bearing to carry substantial combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 28,000 rpm.
- Universal Matching & Preload: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination to form precisely preloaded sets, simplifying mounting and ensuring optimal stiffness.
- Sealed & Pre-Lubricated: The bearing is sealed and pre-lubricated with grease, offering protection from contamination and providing reliable operation within a temperature range of -30°C to 110°C.
S7216 CDGA/P4A Bearing Typical Application Areas
The S7216 CDGA/P4A is ideally suited for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Systems: High-frequency spindles for PCB drilling and precision engraving.
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
- Robotic Arm Joints and Precision Gearboxes
