7028 BGM
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7028 BGM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.85 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
210 mm
Outside diameter tolerance
-0.02mm to 0
Width
33 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Contact angle
40 °
Distance from side face to load point
90 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
167.4 mm
Inner ring small-side shoulder diameter
154.95 mm
Outer Ring Dimensions
Shoulder diameter outer ring
184.35 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
25650 lbf
Radial static load rating
29025 lbf
Limiting speed
3.4 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
No drawings available at the moment, will be launched soon
Price:
$ 189.28
/ each
In Stock
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7028 BGM Bearing Product Overview & Core Advantages
The 7028 is a single row angular contact ball bearing engineered for applications demanding high precision and robust performance. This precision bearing is designed to accommodate combined loads, primarily handling significant thrust loads in one direction while also supporting substantial radial loads. Its 40° contact angle and P6 (ABEC-3) tolerance class ensure exceptional running accuracy and operational reliability, making it an ideal choice for high-speed spindles and other precision machinery where high rigidity and dimensional stability are paramount.
7028 BGM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7028 | Basic model number, indicating a metric series bearing with a 140mm bore and 210mm outside diameter. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and is intended for systems where external lubrication and sealing are provided. |
| P6 (Tolerance Class) | Denotes a precision tolerance class equivalent to ABEC-3, ensuring tight dimensional control for smooth and accurate operation. |
| Lubricated | The bearing is pre-lubricated from the factory, ready for initial operation. |
7028 BGM Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry: The 40° contact angle and precisely calculated shoulder diameters on both rings are engineered to provide superior axial load capacity and high operational stiffness.
- High-Speed Capability: The combination of an open design and a high-strength brass cage contributes to a high limiting speed of 3,400 rpm, making it suitable for demanding spindle applications.
- Superior Load Ratings: With a dynamic load rating of 25,650 lbf and a static load rating of 29,025 lbf, this bearing is built to handle significant combined radial and axial loads over a long service life.
- Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and durability. The brass cage ensures reliable performance under high-speed and high-temperature conditions.
7028 BGM Bearing Typical Application Areas
This angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Pumps and Compressors
- Precision Gearboxes
- Agricultural and Construction Machinery
