S7213 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7213 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.88 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.008mm to 0
Width
23 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
15
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
14332 lbf
Radial static load rating
11475 lbf
Limiting speed
13 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:
$ 732.65
/ each
In Stock
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S7213 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7213 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing features a 25° contact angle and is supplied with a preload, delivering superior rotational accuracy and high rigidity. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance and thermal stability. Designed to accommodate combined loads, it is an ideal solution for high-reliability, precision machinery.
S7213 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7213 | Basic bearing series, indicating a 65mm bore, 120mm OD, and 23mm width. |
| ACD | Angular Contact Design with a 25° contact angle. |
| HCP4A | Hybrid Ceramic Precision class. HC denotes Hybrid Ceramic balls, P4 indicates ABEC-7 precision tolerance, and A signifies a specific internal design and preload. |
S7213 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 25° contact angle and applied preload significantly increase system stiffness, minimizing deflection under load and ensuring exceptional running accuracy (P4/ABEC-7 tolerance).
- Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic resin cage (lightweight and self-lubricating) allows for a very high limiting speed of 13,000 rpm.
- Enhanced Durability & Thermal Performance: Hybrid ceramic construction provides excellent wear resistance and electrical insulation. Ceramic balls also exhibit lower thermal expansion, maintaining preload and performance stability across the operating temperature range (-30° to 110 °C).
- Optimized Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 14,332 lbf and a static load rating of 11,475 lbf.
S7213 ACD/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling machines.
- Precision Robotics: In robot arm joints and high-accuracy servo motors.
- High-Speed Motors & Spindles: Used in electric motors, dental handpieces, and small turbine spindles.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other critical navigation and control equipment.
