7216 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7216 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.24 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
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
18 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:
$ 907.15
/ each
In Stock
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7216 CD/HCP4A Bearing Product Overview & Core Advantages
The 7216 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied with a preload, ensuring minimal axial and radial play for superior system stability. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance, with a limiting speed of 18,000 rpm. Designed to handle combined loads, it is an ideal solution for high-rigidity, high-reliability spindle and precision machinery applications.
7216 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a high rigidity, duplex arrangement with a specific preload. This bearing is supplied as a matched set (in this case, a single bearing pre-configured for duplex mounting). |
| HC | Signifies the use of Hybrid Ceramic balls, which are lighter and harder than steel, reducing centrifugal force and enabling higher speeds and longer service life. |
| P4 | Denotes a super-precision tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy for critical applications. |
| A | Specifies a 30° contact angle (Note: The provided spec shows 15°, this may be a specific variant. The 'A' typically denotes a standard 30° angle). |
7216 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and applied preload eliminate internal clearance, providing high system stiffness and precise rotational accuracy critical for machining and positioning.
- Superior High-Speed Capability: The combination of hybrid ceramic balls and a lightweight phenolic resin cage significantly reduces rotating mass and friction, allowing it to achieve a high limiting speed of 18,000 rpm.
- Excellent Load Capacity: The angular contact design efficiently supports combined radial and axial loads. With a dynamic load rating of 19,170 lbf, it offers reliable performance under demanding conditions.
- Optimized for Performance: The open seal type allows for optimized lubrication flow, which is essential for heat dissipation in high-speed applications. The standard lubrication is suitable for a wide temperature range of -30°C to 110°C.
7216 CD/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery, including:
- Machine Tool Spindles: For CNC milling centers, grinding machines, and lathes requiring high speed and rigidity.
- High-Speed Motors and Spindles: Used in electric motors, precision spindles, and turbo-machinery.
- Precision Robotics: In robotic arm joints and actuators where accuracy and responsiveness are paramount.
- Aerospace and Defense Systems: For gyroscopes, radar systems, and other critical rotating assemblies.
