S7203 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7203 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.065 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
40 mm
Outside diameter tolerance
-0.006mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1989 lbf
Radial static load rating
900 lbf
Limiting speed
38 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 106.57
/ each
In Stock
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S7203 ACD/P4A Bearing Product Overview & Core Advantages
The S7203 ACD/P4A is a precision angular contact ball bearing designed for applications demanding high rigidity and exceptional running accuracy. As a single-row bearing, it is optimized to support combined loads—significant radial loads and high unidirectional axial loads—simultaneously. Manufactured to the exacting P4 (ABEC-7) tolerance class and featuring a phenolic cage, this bearing is engineered for high-speed operation and stable performance in precision machinery and spindles. Its preloaded configuration ensures minimal axial play, providing superior system rigidity and positioning accuracy from the outset.
S7203 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| ACD | Angular Contact Design with a specific 25° contact angle. | Optimized for handling high unidirectional axial loads in combination with radial loads. |
| P4A | Indicates a P4 (ABEC-7) tolerance class and a specific preload designation. | Delivers ultra-precise running accuracy, high rigidity, and reduced vibration for superior performance in demanding applications. |
S7203 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 25° contact angle and preload provides high axial and radial stiffness, minimizing deflection under load and ensuring exceptional positional accuracy.
- Superior Load Capacity: Engineered to support combined loads effectively, with a dynamic load rating of 1989 lbf and a static load rating of 900 lbf, making it robust for its compact bearing dimensions (17mm bore, 40mm OD).
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the precision-ground chrome steel components contribute to a high limiting speed of 38,000 rpm, classifying it as a true high-speed bearing.
- Sealed and Lubricated for Life: As a sealed bearing that is pre-lubricated, it is protected from contamination and is ready for installation, offering a maintenance-free solution within its specified temperature range.
S7203 ACD/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Grinding Equipment
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Robotic Arms and Precision Gearboxes
