51244 M
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51244 M
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
13 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
220 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
300 mm
Outside diameter tolerance
-0.035mm to 0
Width
63 mm
Width tolerance
+0.03mm to -0.4mm
Chamfer dimension
2 mm
Ball & Washer Dimensions
Housing washer inner diameter
224 mm
Shaft washer outer diameter
295 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
80550 lbf
Axial static load rating
328500 lbf
Limiting speed
1.3 X 1000 rpm
Materials
Ring material
52100 Chrome Steel
Ball material
52100 Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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51244 M Bearing Product Overview & Core Advantages
The 51244 M is a metric thrust ball bearing engineered for demanding applications requiring high axial load capacity and precision. This open-type bearing is designed to accommodate thrust loads in a single direction, making it an ideal solution for high-stress environments. Its robust construction from 52100 Chrome Steel ensures exceptional durability and performance. The bearing's key advantages include a very high axial static load rating of 328,500 lbf, enabling it to handle significant static forces, and a precision-grade dimensional tolerance for reliable integration into high-rigidity assemblies.
51244 M Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51244 | Basic model number denoting a thrust ball bearing with a 220 mm bore and 300 mm outside diameter. |
| M | Signifies that the bearing is manufactured from copper-manganese alloy steel, providing enhanced strength and dimensional stability under load. |
51244 M Bearing Structural Features & Performance Benefits
- Superior Axial Load Capacity: The single-direction thrust ball bearing design is optimized to support exceptionally high axial dynamic and static loads (80,550 lbf and 328,500 lbf respectively), making it suitable for heavy-duty applications.
- High-Precision Components: Manufactured with 52100 Chrome Steel rings and balls, and a Stainless Steel cage, the bearing offers excellent wear resistance and operational reliability.
- Optimized for Rigidity: The precise bearing dimensions and tight tolerances on the bore, outside diameter, and width contribute to a stable and high-rigidity mounting arrangement, minimizing deflection under load.
- Wide Operating Range: With a temperature range of -30°C to 110°C, this bearing performs consistently in varied environmental conditions.
51244 M Bearing Typical Application Areas
This thrust ball bearing is commonly specified in industries and machinery where high unidirectional axial loads are prevalent. Key applications include:
- Heavy-Duty Industrial Gearboxes
- Vertical Pumps and Compressors
- Crane Hooks and Lifting Systems
- Large Machine Tool Tables and indexing heads
- Presses and Stamping Equipment
