61864 MA
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
61864 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
11 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
320 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
400 mm
Outside diameter tolerance
-0.028mm to 0
Width
38 mm
Width tolerance
-0.4mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
38667 lbf
Radial static load rating
57326 lbf
Limiting speed
2.4 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
No drawings available at the moment, will be launched soon
Price:
$ 1203.47
/ each
In Stock
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61864 MA Bearing Product Overview & Core Advantages
The 61864 MA is a single row deep groove ball bearing engineered for high-performance applications requiring exceptional radial load capacity and precision. Manufactured to a P6 tolerance class, it delivers superior running accuracy and rotational stability. Its open design facilitates direct lubrication and allows for operation across a wide temperature range from -30°C to 120°C. This bearing is ideal for demanding scenarios where reliability, high limiting speed, and consistent performance under substantial radial dynamic load are paramount.
61864 MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| 61864 | Standard designation for a single row deep groove ball bearing with a 320mm bore and specific dimensions. |
| MA | Indicates a brass cage (Note: Specification lists Stainless Steel cage, MA is a common designation for brass). Please verify cage material for this specific bearing. |
| (No Seal Suffix) | The open seal type allows for high-speed operation and custom lubrication schemes. |
61864 MA Bearing Structural Features & Performance Benefits
- High Load Capacity: Engineered with a deep groove raceway, this bearing is optimized to support high radial dynamic load ratings (38,667 lbf) and even higher radial static load ratings (57,326 lbf), making it robust for heavy-duty applications.
- Precision & Speed: The P6 tolerance class ensures precise internal geometry for smooth, quiet, and vibration-free operation. Combined with the stainless steel cage, it contributes to a high limiting speed of 2,400 rpm.
- Material Integrity: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and durability. The specified CN radial internal clearance is the standard for normal operating conditions.
- Operational Flexibility: The open construction and lack of pre-lubrication ("None") offer flexibility for applications requiring specific lubricants or frequent re-lubrication cycles.
61864 MA Bearing Typical Application Areas
This high-capacity, precision bearing is suited for a wide range of industrial machinery, including:
- Large Electric Motors and Generators
- Industrial Gearboxes and heavy-duty transmission systems
- Vibrating Screens and other mining equipment
- Pump and Compressor Shafts
- Construction and Agricultural Machinery
