61938 MA/C3
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
61938 MA/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
5.21 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
190 mm
Bore diameter tolerance
-0.022mm to 0
Outside diameter
260 mm
Outside diameter tolerance
-0.025mm to 0
Width
33 mm
Width tolerance
-0.3mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
26303 lbf
Radial static load rating
30124 lbf
Limiting speed
4.3 X 1000 rpm
Lubrication
None
Radial internal clearance
C3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Machined metal
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 655.78
/ each
In Stock
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61938 MA/C3 Bearing Product Overview & Core Advantages
The 61938 MA/C3 is a single row deep groove ball bearing engineered for demanding industrial applications requiring robust radial load capacity and reliable performance. Characterized by its open design and C3 radial internal clearance, this bearing is optimized for operational environments with thermal expansion considerations. Its construction from high-grade chrome steel and a machined metal cage ensures durability and stable operation at moderate to high speeds, making it a versatile and dependable component for power transmission systems.
61938 MA/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 61938 | Basic bearing designation, indicating a deep groove ball bearing with a 190mm bore and 260mm outside diameter. |
| MA | Designates a machined brass cage, providing high strength, excellent guidance, and suitability for high-speed applications. |
| C3 | Indicates a greater than normal radial internal clearance. This is crucial for applications where thermal expansion of the shaft or housing is expected, preventing preload and ensuring smooth operation. |
61938 MA/C3 Bearing Structural Features & Performance Benefits
- High Load Capacity: The single row deep groove raceway and robust construction enable high radial dynamic load rating (26,303 lbf) and radial static load rating (30,124 lbf), making it suitable for significant radial forces.
- Optimized for Thermal Expansion: The C3 clearance is a key feature that accommodates dimensional changes in adjacent components due to heat, preventing binding and potential bearing failure.
- High-Speed Capability: The combination of the machined brass (MA) cage and precision ABEC 1 (ISO P0) manufacturing allows for a high limiting speed of 4,300 rpm, ensuring stability and reduced friction.
- Durable Construction: Components made from chrome steel offer high hardness and resistance to wear, while the machined metal cage provides superior strength and guidance compared to stamped alternatives.
- Versatile Operating Range: With a temperature range of -30°C to 120°C, this bearing is suitable for a wide array of industrial environments.
61938 MA/C3 Bearing Typical Application Areas
This bearing is commonly specified in applications requiring reliable performance under radial loads and moderate speeds. Key sectors include:
- Electric Motors and Generators
- Industrial Gearboxes
- Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
- General Industrial Machinery
