618/630 MA
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
618/630 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
73 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
630 mm
Bore diameter tolerance
-0.04mm to 0
Outside diameter
780 mm
Outside diameter tolerance
-0.045mm to 0
Width
69 mm
Width tolerance
-0.5mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
99366 lbf
Radial static load rating
216941 lbf
Limiting speed
1.1 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
No drawings available at the moment, will be launched soon
Price:
$ 4838.95
/ each
In Stock
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618/630 MA Bearing Product Overview & Core Advantages
The 618/630 MA is a single row deep groove ball bearing engineered for high-precision radial load applications. Characterized by its open design and P6 tolerance class, this bearing delivers exceptional running accuracy and rotational stability. Its robust construction, featuring chrome steel rings and balls with a stainless steel cage, ensures reliable performance in demanding industrial environments. The bearing is designed for applications requiring high radial load capacity and precise operation.
618/630 MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 618 | Series designation for extra light series, deep groove ball bearings. |
| 630 | Bore diameter code, corresponding to a 630 mm bore. |
| M | Designates a stainless steel cage (machined window type). |
| A | Indicates specific internal design optimizations for load distribution. |
618/630 MA Bearing Structural Features & Performance Benefits
- High Load Capacity: The deep groove raceway and optimized geometry enable it to support significant radial dynamic load ratings of 99366 lbf and radial static load ratings of 216941 lbf.
- Precision Performance: Manufactured to a P6 tolerance class with a CN radial internal clearance, this bearing ensures smooth, low-vibration operation essential for precision machinery.
- Durability and Speed: The combination of a stainless steel cage (MA designation) and high-grade chrome steel components provides excellent durability and allows for a limiting speed of 1,100 rpm.
- Material Integrity: Constructed from through-hardened chrome steel for rings and balls, offering high wear resistance and a long operational lifespan.
618/630 MA Bearing Typical Application Areas
This precision bearing is ideally suited for heavy-duty industrial applications where high radial load capacity and accuracy are paramount. Key sectors include:
- Large Electric Motors and Generators
- Industrial Gearboxes and Drives
- Vibrating Screens and Heavy Machinery
- Paper and Steel Mill Equipment
- Wind Turbine Main Shafts
