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Bearry™ ARE, AR, and ARF Type Sleeve Bearings

ARE・AR・ARF / NTN Corporation (Official website)

Resin sleeve bearings made with Bearry FL3000. ARE type has bore diameter 3 to 12 mm, AR type has bore diameter 15 to 50 mm, and ARF type is flanged with bore diameter 3 to 50 mm, all standardized. Supports radial load (ARF type also supports axial load).

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

Specifications

Inner diameter d 3～50 mm
Maximum Operating Temperature 260 ℃
Specific Gravity 2.28
Tensile Strength 15 MPa

How to choose Bushings

Points to check when selecting, with the values for this product (Bearry™ ARE, AR, and ARF Type Sleeve Bearings).

  1. 1. Match Shaft and Housing Bore Dimensions

    This product: Inner diameter d 3～50 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

    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

    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

    This product: Maximum Operating Temperature 260 ℃

    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

ARE type is a product automatically compression molded from FL3000 and receives radial load only. AR type is a product machined from FL3000 rod and pipe stock, with performance equivalent to ARE type. ARF type is AR with a flange added, and can receive both radial and axial loads. When used at 80°C or higher, operating clearance may become an issue, so consultation with NTN is recommended.

Features

  • Made of Bearry FL3000
  • ARE type bore diameter 3 to 12 mm
  • AR type bore diameter 15 to 50 mm
  • ARF type is flanged and can also receive axial load

Applications

  • Plain bearings

FAQ

Q. What is the bore diameter range of Bearry ARE, AR, and ARF type sleeve bearings, and how do the types differ?
A. ARE type has bore diameter 3 to 12 mm, AR type has bore diameter 15 to 50 mm, and ARF type is flanged with bore diameter 3 to 50 mm, all standardized.
Q. What types of load can Bearry ARE, AR, and ARF type sleeve bearings receive?
A. ARE type receives radial load only. AR type also supports radial load. ARF type receives both radial and axial loads in addition to radial load.
Q. What are the differences in manufacturing method and performance between Bearry ARE and AR types?
A. ARE type is automatically compression molded from FL3000. AR type is machined from FL3000 rod and pipe stock, and its performance is equivalent to ARE type.
Q. What should be noted when using Bearry ARF type sleeve bearings at 80°C or higher?
A. When used at 80°C or higher, operating clearance may become an issue, so consultation with NTN is recommended.
Q. What are the material and main specifications of Bearry ARE, AR, and ARF type sleeve bearings?
A. They are made of Bearry FL3000. The maximum use temperature is 260°C, specific gravity is 2.28, and tensile strength is 15 MPa.

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

Source documents

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