61988 MA
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
61988 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
60.5 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
440 mm
Bore diameter tolerance
-0.035mm to 0
Outside diameter
600 mm
Outside diameter tolerance
-0.038mm to 0
Width
74 mm
Width tolerance
-0.45mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
92172 lbf
Radial static load rating
161862 lbf
Limiting speed
1.6 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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61988 MA Bearing Product Overview & Core Advantages
The 61988 MA is a single row deep groove ball bearing designed for demanding industrial applications requiring high precision and reliability. Engineered to primarily accommodate radial loads, this bearing features a P6 tolerance class for superior running accuracy. Its open design allows for versatile lubrication options, while the robust construction using chrome steel rings and balls with a stainless steel cage ensures exceptional durability and a long operational life, making it an ideal choice for high-performance machinery.
61988 MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| 61988 | Standard series designation for a single row deep groove ball bearing. |
| MA | Indicates a brass cage (Note: Specification data indicates a stainless steel cage. The "MA" suffix may refer to a specific manufacturer's internal designation for cage type, material, or other proprietary feature. Please consult manufacturer datasheets for precise interpretation). |
| (Implied) | P6 - Dimensional and running accuracy tolerance class, tighter than standard. |
| (Implied) | CN - Standard radial internal clearance for normal operating conditions. |
61988 MA Bearing Structural Features & Performance Benefits
- High Load Capacity: With a radial dynamic load rating of 92,172 lbf and a radial static load rating of 161,862 lbf, this bearing is built to handle significant radial forces in heavy-duty applications.
- Precision Performance: The P6 tolerance class ensures minimal runout and vibration, contributing to smoother operation and higher system accuracy.
- Optimized Cage Design: The inclusion of a stainless steel cage provides excellent strength and corrosion resistance, enhancing stability at the limiting speed of 1,600 rpm.
- Robust Material Construction: Components made from chrome steel offer high hardness and wear resistance, while the open seal type allows for efficient heat dissipation and custom lubrication strategies.
- Standard Internal Clearance: The CN radial internal clearance is suitable for most common operating conditions, ensuring optimal performance without preload.
61988 MA Bearing Typical Application Areas
This bearing is suited for applications requiring high radial load capacity and precision, such as:
- Large Industrial Gearboxes
- Heavy-Duty Pumps and Compressors
- Mining and Construction Machinery
- Material Handling Equipment
- Large Electric Motors
