S7201 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7201 CDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.034 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1316 lbf
Radial static load rating
574 lbf
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S7201 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S7201 CDGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This single bearing features a 15° contact angle and is part of a Universal Matchable (SU) set, allowing for precise preload configuration when mounted with its matched pair. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy due to its P4A tolerance class, and high-speed capability enabled by its lightweight phenolic cage and ceramic balls. The sealed design with pre-applied grease ensures long-term, maintenance-free operation.
S7201 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings. |
| 201 | Bore size code (12 mm). |
| CDGA | Internal design code specifying a 15° contact angle and Extra light (A) preload. |
| HCP4A | Indicates the bearing is supplied as part of a Universal Matchable (SU) set and adheres to the P4A super-precision tolerance class. |
S7201 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with extremely tight dimensional runouts, this bearing provides superior rotational accuracy and system stiffness, which is critical for high-precision spindles.
- Advanced Material Composition: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications. The phenolic cage offers excellent strength-to-weight ratio, further supporting high-speed operation.
- Optimized Load Capacity: The 15° contact angle is ideal for applications requiring high-speed performance with moderate axial load capacity, effectively handling combined (radial and axial) loads.
- Sealed and Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is designed for maintenance-free operation within the specified temperature range of -30°C to 110°C.
S7201 CDGA/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and PCB drilling machines.
- Precision Instrumentation: Measuring devices, optical scanners, and rotary encoders.
- High-Speed Motors: Servo motors and spindle drives.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
