7228 BGAM
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7228 BGAM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
8.85 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
140 mm
Bore diameter tolerance
-0.018mm to 0
Outside diameter
250 mm
Outside diameter tolerance
-0.02mm to 0
Width
42 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
3 mm
Contact angle
40 °
Distance from side face to load point
103 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
183.3 mm
Inner ring small-side shoulder diameter
163.6 mm
Outer Ring Dimensions
Shoulder diameter outer ring
209.55 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
44775 lbf
Radial static load rating
47700 lbf
Limiting speed
3.6 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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In Stock
Price available upon request.
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7228 BGAM Bearing Product Overview & Core Advantages
The 7228 BGAM is a single row angular contact ball bearing engineered for precision applications requiring high rotational accuracy and reliable performance. This precision bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, along with significant radial loads. Its optimized 40° contact angle and P6 (ABEC-3) tolerance class ensure exceptional running accuracy, making it ideal for high-speed spindles and other demanding machinery. The bearing comes pre-lubricated for immediate use and offers a wide operating temperature range.
7228 BGAM Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| B | 40° contact angle |
| GA | Light preload |
| M | Brass cage |
7228 BGAM Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row design with a 40° contact angle is optimized to handle high combined loads, providing excellent resistance to deformation under heavy thrust and radial forces.
- High-Speed Performance: The brass cage (M) ensures dimensional stability and low friction at high rotational speeds, contributing to the bearing's limiting speed of 3,600 rpm.
- Precision Operation: Manufactured to P6 (ABEC-3) tolerance class, this bearing guarantees high running accuracy and minimal vibration, which is critical for precision applications.
- Ready-to-Use Lubrication: The bearing is pre-lubricated, facilitating immediate installation and initial operation, while the open seal type allows for custom re-lubrication regimes if required.
7228 BGAM Bearing Typical Application Areas
This bearing is ideally suited for:
- Machine Tool Spindles
- High-Speed Pumps and Compressors
- Precision Gearboxes
- Industrial Motors
- Material Handling Equipment
