618/1320 MA
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
618/1320 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
500 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1320 mm
Bore diameter tolerance
-0.09mm to 0
Outside diameter
1600 mm
Outside diameter tolerance
-0.09mm to 0
Width
122 mm
Width tolerance
-1.6mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
214917 lbf
Radial static load rating
708148 lbf
Limiting speed
0.4 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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618/1320 MA Bearing Product Overview & Core Advantages
The 618/1320 MA is a single row deep groove ball bearing engineered for applications demanding high precision and reliability under primarily radial loads. Characterized by its exceptionally large bore diameter of 1320 mm and a P6 tolerance class, this bearing is designed for superior running accuracy. Its open design allows for versatile lubrication options, making it suitable for custom high-performance systems. The combination of a high radial static load rating of 708,148 lbf and a robust construction ensures exceptional durability and long service life in demanding industrial environments.
618/1320 MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 618 | Series designation for extra large bore, single row deep groove ball bearings. |
| 1320 | Bore diameter in millimeters (1320 mm). |
| MA | Indicates a brass cage (Note: Specification lists stainless steel, "MA" is a common designation for brass cages in some series. Please verify cage material for this specific bearing). |
618/1320 MA Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to a P6 tolerance class with a standard CN radial internal clearance, this bearing provides excellent running accuracy and stable rotational characteristics, which is critical for precision machinery.
- Exceptional Load Capacity: The deep groove raceway and robust construction are optimized to handle high radial dynamic and static loads, ensuring reliable performance under significant stress.
- Optimized for Large-Scale Applications: With a bore diameter of 1320 mm and an outside diameter of 1600 mm, this bearing is built for large, heavy-duty machinery where standard bearing sizes are insufficient.
- High-Quality Material Construction: The use of chrome steel for rings and balls, combined with a stainless steel cage, offers excellent resistance to wear and corrosion, contributing to a long operational lifespan.
- Versatile Lubrication: The open seal type allows for the application of specialized lubricants tailored to specific operational needs, including high-temperature or extreme-speed conditions.
618/1320 MA Bearing Typical Application Areas
This large bore, high-precision bearing is ideally suited for:
- Large industrial gearboxes and power transmission systems.
- Heavy-duty mining and construction equipment.
- Main spindles and support rollers in large-scale processing machinery.
- Critical components in wind turbine generators.
- Large pumps and compressors.
