51248 M

51200 Series Single Direction Thrust Ball Bearings

51248 M 51200 Series Single Direction Thrust Ball Bearings
51248 M 51200 Series Single Direction Thrust Ball Bearings

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Part No.
Part No. 51248 M

Basic Information

Bearing type Ball
System of measurement Metric
Weight 23 kg
Seal type Open
For load direction Thrust

Main Dimensions

Bore diameter 240 mm
Bore diameter tolerance -0.03mm to 0
Outside diameter 340 mm
Outside diameter tolerance -0.04mm to 0
Width 78 mm
Width tolerance +0.03mm to -0.4mm
Chamfer dimension 2.1 mm

Ball & Washer Dimensions

Housing washer inner diameter 244 mm
Shaft washer outer diameter 335 mm

Performance

Temperature range -30° to 110 °C
Axial dynamic load rating 101025 lbf
Axial static load rating 441000 lbf
Limiting speed 1.1 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 No drawings available at the moment, will be launched soon
In Stock
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51248 M Bearing Product Overview & Core Advantages

The 51248 M is a metric thrust ball bearing engineered for applications demanding high axial load capacity and precision. This open-type bearing is designed exclusively to accommodate heavy thrust loads in a single direction. Manufactured from high-grade 52100 Chrome Steel for both rings and balls, it ensures exceptional durability and wear resistance. Its robust construction and high load ratings make it an ideal choice for high-reliability, heavy-duty machinery where space constraints and precise axial positioning are critical.

Model Code Breakdown

  • 51248: Basic model number denoting a thrust ball bearing with a 240mm bore and specific dimensions.
  • M: Designates that the bearing is manufactured from copper-manganese alloy steel, contributing to its high strength and load-carrying capabilities.

51248 M Bearing Structural Features & Performance Benefits

High Axial Rigidity and Load Capacity: The bearing's design is optimized to handle significant axial dynamic load ratings of 101,025 lbf and immense axial static load ratings of 441,000 lbf. This makes it exceptionally reliable under heavy thrust conditions.

Precision Ground Components: With tight tolerances on the bore, outside diameter, and width, the 51248 M ensures precise shaft and housing fits, contributing to stable operation and accurate alignment.

Durable Cage Construction: The stainless steel cage provides superior strength and corrosion resistance, ensuring reliable ball guidance and extended service life, even at the limiting speed of 1,100 rpm.

Wide Operating Temperature Range: The bearing is capable of operating in temperatures from -30°C to 110°C, making it suitable for a variety of industrial environments.

51248 M Bearing Typical Application Areas

The 51248 M thrust ball bearing is ideally suited for heavy machinery and equipment requiring robust axial support. Common applications include:

  • Heavy-Duty Industrial Gearboxes
  • Vertical Pumps and Compressors
  • Cranes and Hoisting Equipment
  • Machine Tool Spindles (for axial load support)
  • Marine Propulsion Systems
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