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Bearry™ MLE Type MLE Bearing

MLE / NTN Corporation (Official website)

Three-layer high-load bearing made by sintering bronze powder onto a steel backing plate and impregnating the porous layer with Bearry FL7023. Inner diameter 4–60 mm.

Last verified: (date the content was verified against the source document)

Specifications

Inner diameter d 4～60 mm
Limiting surface pressure 49 MPa
Limiting sliding speed 100 m/min
Limit PV value 98 MPa・m/min
Operating Temperature Range -200～260 ℃

How to choose Bushings

Points to check when selecting, with the values for this product (Bearry™ MLE Type MLE Bearing).

  1. 1. Match Shaft and Housing Bore Dimensions

    This product: Inner diameter d 4～60 mm

    The inner diameter d corresponds to the shaft diameter in use, and the outer diameter D corresponds to the housing bore diameter. Listed products have inner diameters of 3 to 70 mm. Many are press-fitted, so confirm the manufacturer's recommended shaft and housing bore tolerances, taking into account the reduction in inner diameter after press-fitting and the clearance with the shaft.

  2. 2. Verify Margin Using the PV Value

    This product: Limit PV value 98 MPa・m/min

    When the product of surface pressure P (MPa) and sliding speed V (m/min) exceeds the limiting PV value, heat generation causes wear and seizure to increase rapidly. In the listed example, the limiting PV value is 98 MPa·m/min. Calculate the PV value from the actual load and rotational speed, and select a product with adequate margin.

  3. 3. Check Maximum Surface Pressure and Sliding Speed Separately

    This product: Limiting surface pressure 49 MPa

    Even if the PV value is within range, the product cannot be used if either surface pressure or speed exceeds its limit. In the listed examples, the limiting surface pressure is 49 MPa and the limiting sliding speed is 100 m/min. For high-load oscillating applications, grades for high surface pressure, such as multi-layer constructions with a steel backing, are suitable.

  4. 4. Select Material and Construction for the Application

    Injection-molded resin products are lightweight and suitable for maintenance-free use, while multi-layer and rolled bushings with a resin layer over a steel backing are thin-walled and withstand high surface pressure. Also check chemical resistance, dimensional change due to water absorption, and compatibility with the mating shaft material and hardness for each material.

  5. 5. Confirm the Maximum Operating Temperature

    Resin-based materials lose strength and wear resistance at high temperatures. Listed products have continuous maximum operating temperatures of 230 to 260 °C. Consider that frictional heat adds to the ambient temperature, and check how clearance changes due to thermal expansion as temperature rises.

  6. 6. Choose a Flanged Type for Axial Loads

    Where loads act along the axis or axial positioning is required, a flanged type can receive the load on its flange face. Confirm that the flange outer diameter and thickness do not interfere with the seating surface dimensions on the housing side or with surrounding components.

This guide was written by AI based on the listed products' documents and specification items.

About Bushings and all products

Description

Three-layer construction consisting of a steel backing plate, a porous layer formed by sintering bronze, and FL7023 impregnated into the porous layer, enabling use under high surface pressure. The steel plate surface is tin-plated for rust prevention. Operating temperature range is -200–260°C. Reference limits without lubrication are 49 MPa maximum surface pressure and 98 MPa·m/min maximum PV value.

Features

  • Three-layer construction
  • Suitable for high surface pressure
  • Inner diameter 4–60 mm
  • Tin-plated steel backing

Applications

  • High surface pressure applications

FAQ

Q. Under what conditions can the Bearry™ MLE Type MLE Bearing be used?
A. The operating temperature range is -200–260°C. As reference values without lubrication, the limiting surface pressure is 49 MPa and the limiting PV value is 98 MPa·m/min.
Q. What are the inner diameter and construction of the Bearry™ MLE Type MLE Bearing?
A. The inner diameter is 4–60 mm. It has a three-layer construction: a steel backing plate, a porous bronze sintered layer, and FL7023 impregnated into the porous layer.
Q. Does the steel plate surface of the Bearry™ MLE Type MLE Bearing have rust prevention treatment?
A. Yes, the steel plate surface is tin-plated for rust prevention.

Written by AI based on the content of the source documents.

Source documents

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