S7212 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7212 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.71 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.008mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
10462 lbf
Limiting speed
16 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:
$ 631.3
/ each
In Stock
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S7212 CD/HCP4A Bearing Product Overview & Core Advantages
The S7212 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed and rigidity. This sealed bearing features a single, preloaded arrangement and is manufactured to a P4 (ABEC-7) tolerance class, ensuring superior running accuracy. Its core advantages include the ability to handle combined loads (radial and axial) simultaneously, outstanding high-speed performance facilitated by a phenolic cage and ceramic balls, and long-term reliability with integrated sealing and lubrication.
S7212 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7212 | Basic bearing series and size designation (60mm bore, 110mm OD). |
| CD | Indicates a duplex configuration with a specific contact angle and preload for high rigidity and precise axial positioning. |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce centrifugal forces, lower operating temperature, and extend service life at high speeds. |
| P4A | Denotes the tolerance class P4 (ABEC-7) with additional dimensional and running accuracy requirements for the highest level of precision. |
S7212 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The duplex (CD) arrangement is preloaded at the factory, eliminating internal clearance. This creates an exceptionally stiff bearing system that minimizes deflection under load, crucial for maintaining accuracy in machining and positioning.
- Superior High-Speed Capability: The combination of a lightweight phenolic resin cage and hybrid ceramic balls (HC) significantly reduces rotating mass and centrifugal forces. This allows the bearing to achieve its high limiting speed of 16,000 rpm with minimal heat generation.
- Enhanced Load Capacity: Designed with a 15° contact angle, this bearing is optimized to support significant combined loads, making it suitable for applications with substantial radial and axial force components.
- Sealed & Lubricated for Life: As a sealed bearing that is pre-lubricated, it is protected from contamination and is designed for maintenance-free operation within its specified temperature range, reducing total cost of ownership.
S7212 CD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Robotics: High-accuracy joints and actuators.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
