7218 BEGAF
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7218 BEGAF
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
2.3 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
160 mm
Outside diameter tolerance
-0.018mm to 0
Width
30 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Contact angle
40 °
Distance from side face to load point
67 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
117.1 mm
Inner ring small-side shoulder diameter
103.06 mm
Outer Ring Dimensions
Shoulder diameter outer ring
134.8 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
24300 lbf
Radial static load rating
21712 lbf
Limiting speed
4.5 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 158.56
/ each
In Stock
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7218 BEGAF Bearing Product Overview & Core Advantages
The 7218 BEGAF is a single row angular contact ball bearing engineered for high-performance applications requiring exceptional precision and reliability. This precision bearing is specifically designed to accommodate high combined loads, including significant radial and unidirectional thrust loads, thanks to its optimized 40° contact angle. Manufactured to a P6 (ABEC-3) tolerance class, it ensures superior running accuracy and rotational stability. Its open design, combined with a stainless steel cage and pre-lubrication, makes it an ideal solution for high-speed machinery demanding high rigidity and dependable operation.
7218 BEGAF Bearing Model Code Explained, Specifications & Naming Convention
The 7218 BEGAF model code provides detailed technical specifications. Below is a breakdown of its key components:
- 7218: Basic bearing series, indicating a bore diameter of 90 mm, an outside diameter of 160 mm, and a width of 30 mm.
- BE: Signifies an optimized internal design with a 40° contact angle and enhanced internal geometry for superior performance.
- GA: Indicates a light preload applied to the bearing, which increases system rigidity and minimizes axial and radial play.
- F: Denotes that the bearing is manufactured from case-hardening steel, providing a tough core and a hard, wear-resistant surface.
7218 BEGAF Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row design with a 40° contact angle is engineered to support high combined loads. The light preload (GA) significantly enhances system stiffness, reducing deflection under load for improved machining or operational accuracy.
- High-Speed Performance: The standard stainless steel cage ensures low friction and high strength, contributing to a high limiting speed of 4,500 rpm. The open design facilitates efficient lubrication management for stable high-speed operation.
- Precision and Durability: Manufactured to P6 tolerance for precise running, the bearing uses case-hardening steel (F) for the rings, offering an excellent combination of toughness and wear resistance, extending service life in demanding conditions.
- Standard Lubrication: The bearing comes pre-lubricated, ready for immediate installation and operation within its specified temperature range of -30°C to 110°C.
7218 BEGAF Bearing Typical Application Areas
This bearing is ideally suited for applications where high precision, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Pumps and Compressors
- Agricultural and Construction Machinery
