61944 MA/W64
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
61944 MA/W64
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
7.93 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
220 mm
Bore diameter tolerance
-0.022mm to 0
Outside diameter
300 mm
Outside diameter tolerance
-0.025mm to 0
Width
38 mm
Width tolerance
-0.3mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
33946 lbf
Radial static load rating
40466 lbf
Limiting speed
3.6 X 1000 rpm
Lubrication
Soild Oil
Radial internal clearance
CN
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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61944 MA/W64 Bearing Product Overview & Core Advantages
The 61944 MA/W64 is a single row deep groove ball bearing designed for exceptional performance in demanding industrial applications. This metric series bearing features a solid chrome steel construction and is pre-lubricated with Solid Oil for long service life. Its open design and CN radial internal clearance make it suitable for applications requiring high reliability and consistent operation under radial loads. With an ABEC 1 | ISO P0 tolerance class, it offers a cost-effective solution for general precision requirements.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 61944 | Basic bearing designation: Deep Groove Ball Bearing, 220mm bore, 300mm OD, 38mm width |
| MA | Machined brass cage, providing excellent strength and guidance at high speeds |
| W64 | Solid Oil filling, offering maintenance-free operation and reliable lubrication across the specified temperature range |
61944 MA/W64 Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured from high-grade chrome steel for both rings and balls, ensuring durability and resistance to wear under substantial radial dynamic load ratings (33,946 lbf).
- High-Speed Capability: The machined metal cage (MA) provides superior stability and reduces friction, enabling operation at limiting speeds up to 3,600 rpm.
- Maintenance-Free Operation: The integrated Solid Oil lubrication (W64) eliminates the need for re-lubrication, prevents oil leakage, and ensures consistent performance from -30°C to 120°C.
- Precision & Reliability: Standard ABEC 1 (ISO P0) tolerance and CN radial internal clearance guarantee consistent running accuracy and smooth operation in a wide range of applications.
61944 MA/W64 Bearing Typical Application Areas
- Industrial Electric Motors and Generators
- Material Handling Equipment such as conveyor systems
- Agricultural Machinery and implements
- Gearboxes and power transmission systems
- Pumps and Fans for industrial ventilation
