7203 BEY
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7203 BEY
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.065 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
40 mm
Outside diameter tolerance
-0.009mm to 0
Width
12 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
0.6 mm
Contact angle
40 °
Distance from side face to load point
18 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
26.25 mm
Inner ring small-side shoulder diameter
21.66 mm
Outer Ring Dimensions
Shoulder diameter outer ring
31.15 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2340 lbf
Radial static load rating
1238 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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7203 BEY Bearing Product Overview & Core Advantages
The 7203 BEY is a single row angular contact ball bearing engineered for high-precision applications requiring exceptional performance under combined loads. Its optimized 40° contact angle enables it to efficiently support significant radial loads and substantial axial loads in one direction simultaneously. Manufactured to P6 (ABEC-3) tolerance class, this bearing offers superior running accuracy, making it an ideal choice for high-speed spindles and other demanding machinery where precision and reliability are paramount. The open design, combined with a robust brass cage, facilitates high rotational speeds and excellent operational stability.
7203 BEY Bearing Model Code Explained, Specifications & Naming Convention
The model designation 7203 BEY is decoded as follows:
- 7: Series identifier for Angular Contact Ball Bearings.
- 2: Dimension series code (specifying cross-sectional dimensions).
- 03: Bore diameter code, indicating a 17 mm bore.
- BEY: A manufacturer-specific suffix. This typically indicates a 40° contact angle and a brass cage design, optimized for high-speed operation and high rigidity.
7203 BEY Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row design with a generous 40° contact angle provides high rigidity and is specifically engineered to handle combined radial and axial loads effectively. The optimized internal geometry, including defined shoulder diameters, ensures stable load distribution.
- High-Speed Performance: The use of a precision-machined brass cage ensures guidance and stability of the balls at high rotational speeds, contributing to a limiting speed of 20,000 rpm. The open design allows for efficient lubrication and heat dissipation.
- Precision Engineering: Manufactured to P6 tolerance class, this bearing guarantees minimal runout and smooth, precise operation, which is critical for applications like machine tool spindles.
- Durable Construction: Components are made from high-grade chrome steel for both rings and balls, offering excellent wear resistance and a long service life under demanding conditions.
7203 BEY Bearing Typical Application Areas
The 7203 BEY angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Motors
- Precision Gearboxes
- Pumps and Compressors
- Agricultural Machinery
