51148 M

51100 & 51000 Series Single Direction Thrust Ball Bearings

51148 M 51100 & 51000 Series Single Direction Thrust Ball Bearings
51148 M 51100 & 51000 Series Single Direction Thrust Ball Bearings

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Part No.
Part No. 51148 M

Basic Information

Bearing type Ball
System of measurement Metric
Weight 7.55 kg
Seal type Open
For load direction Thrust

Main Dimensions

Bore diameter 240 mm
Bore diameter tolerance -0.03mm to 0
Outside diameter 300 mm
Outside diameter tolerance -0.035mm to 0
Width 45 mm
Width tolerance +0.03mm to -0.4mm
Chamfer dimension 1.5 mm

Ball & Washer Dimensions

Housing washer inner diameter 243 mm
Shaft washer outer diameter 297 mm

Performance

Temperature range -30° to 110 °C
Axial dynamic load rating 52650 lbf
Axial static load rating 234000 lbf
Limiting speed 1.6 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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51148 M Bearing Product Overview & Core Advantages

The 51148 M is a metric thrust ball bearing engineered for demanding applications requiring high axial load capacity and precision. Its design is optimized to accommodate heavy thrust loads in a single direction, making it an ideal solution for high-stress, low-speed rotational systems. Manufactured from high-grade 52100 Chrome Steel for both rings and balls, it ensures exceptional durability and wear resistance. The open seal type allows for versatile lubrication options, catering to specific operational environments and maintenance schedules.

51148 M Bearing Model Code Explained, Specifications & Naming Convention

The model number 51148 M can be broken down to reveal its key technical specifications:

  • 51148: The basic designation for a metric single-direction thrust ball bearing with a 240mm bore and 300mm outside diameter.
  • M: This suffix indicates that the bearing is equipped with a brass cage (machined). This cage type offers high strength and stability, making it suitable for applications with high rotational speeds and demanding operating conditions.

51148 M Bearing Structural Features & Performance Benefits

The 51148 M's performance is derived from its robust construction and material selection:

  • High Axial Load Capacity: The bearing is designed specifically to handle significant axial dynamic load ratings of 52650 lbf and even higher axial static load ratings of 234000 lbf, providing reliable support against heavy thrust forces.
  • Precision Ground Components: With tight tolerances on the bore, outside diameter, and width, this bearing ensures precise shaft and housing fits, contributing to stable and accurate system performance.
  • Durable Cage Design: The stainless steel cage provides excellent corrosion resistance and mechanical strength, ensuring reliable ball guidance and separation even under challenging conditions.
  • Material Integrity: The use of 52100 Chrome Steel for the bearing rings and balls guarantees high hardness and long service life, essential for heavy-duty applications.

51148 M Bearing Typical Application Areas

The 51148 M thrust ball bearing is commonly specified in industries and machinery where substantial axial loads are paramount. Key application areas include:

  • Heavy-Duty Industrial Gearboxes
  • Vertical Pumps and Compressors
  • Cranes and Hoisting Equipment
  • Machine Tool Tables and Screws
  • Marine Propulsion Systems
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