S7216 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7216 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.28 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.009mm 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° to 110 °C
Radial dynamic load rating
19170 lbf
Radial static load rating
16875 lbf
Limiting speed
12 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1088.62
/ each
In Stock
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S7216 CD/HCP4A Bearing Product Overview & Core Advantages
The S7216 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rigidity and speed. This single-row bearing features a 15° contact angle and is supplied with a preload, making it ideal for supporting combined radial and axial loads in one direction. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability, while its P4 (ABEC-7) tolerance class ensures outstanding running accuracy for high-reliability applications.
S7216 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7216 | Basic bearing series and size designation (80mm bore, 140mm OD). |
| C | Specifies a 15° contact angle. |
| D | Indicates the bearing is supplied with a preload for enhanced rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements. |
S7216 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 15° contact angle and applied preload provide high system stiffness, enabling the bearing to effectively handle significant combined radial and axial loads.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, allowing for a high limiting speed of 12,000 rpm. This design also offers excellent dimensional stability under thermal stress.
- Precision & Long Service Life: Manufactured to P4 precision class, this bearing ensures minimal runout and smooth operation. The hybrid ceramic design provides increased durability and longer life, especially in demanding operating conditions.
- Sealed & Lubricated: The bearing comes sealed and pre-lubricated, protecting against contamination and providing reliable operation within its specified temperature range.
S7216 CD/HCP4A Bearing Typical Application Areas
This high-performance angular contact ball bearing is ideally suited for:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace & Defense Systems
