61888 MA/C5
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
61888 MA/C5
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
22.5 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
440 mm
Bore diameter tolerance
-0.035mm to 0
Outside diameter
540 mm
Outside diameter tolerance
-0.038mm to 0
Width
46 mm
Width tolerance
-0.45mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
57326 lbf
Radial static load rating
98916 lbf
Limiting speed
1.8 X 1000 rpm
Lubrication
None
Radial internal clearance
C5
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Machined metal
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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61888 MA/C5 Bearing Product Overview & Core Advantages
The 61888 MA/C5 is a single row deep groove ball bearing designed for demanding industrial applications requiring high radial load capacity and reliable performance. This open-type bearing features a C5 radial internal clearance, making it particularly suitable for applications with elevated operational temperatures or where fit-up conditions necessitate greater internal play. Manufactured to ABEC 1 | ISO P0 tolerance standards, it offers a robust and cost-effective solution for general machinery. Its high static and dynamic load ratings ensure dependable operation under significant radial forces.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 61888 | Basic bearing series designation for a single row deep groove ball bearing. |
| MA | Indicates a machined brass cage, offering high strength and excellent guidance, suitable for high-speed applications. |
| C5 | Specifies a greater than normal radial internal clearance. This is essential for applications involving thermal expansion, shaft misalignment, or heavy interference fits. |
61888 MA/C5 Bearing Structural Features & Performance Benefits
- High Load Capacity: The deep groove raceway and robust construction enable it to support high radial dynamic and static loads (57,326 lbf and 98,916 lbf respectively), making it ideal for heavy-duty machinery.
- Optimized for Challenging Conditions: The C5 clearance accommodates dimensional changes from heat generation and press-fits, preventing premature failure due to excessive preload.
- High-Speed Capability: The machined brass cage (MA) ensures stable operation and guides the balls effectively, contributing to a reliable limiting speed of 1,800 rpm.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring a long service life.
- Versatile Lubrication: As an open bearing, it allows for the use of various lubrication systems tailored to specific application needs, from oil bath to circulating oil.
61888 MA/C5 Bearing Typical Application Areas
This bearing is commonly specified in industries and equipment such as:
- Industrial Gearboxes and heavy-duty transmission systems
- Large Electric Motors and generators
- Mining and Construction Machinery (e.g., conveyor pulleys, crushers)
- Material Handling Equipment
- Agricultural Machinery
