Flanged Support Roller

Specifications

How to choose Track Rollers

Points to check when selecting, with the values for this product (Flanged Support Roller).

1. 1. Select a type that suits the mounting method

   This product: Type NATR, NATV, NUTR .. A, PWTR …2RS, NNTR …2ZL

   Yoke types are passed over a shaft and supported on both sides, while stud types are fixed by tightening a nut on a cantilevered stud. Yoke types are available with or without a flange ring; the flangeless type requires peripheral components to restrict axial movement of the outer ring. Whether an inner ring is used depends on whether the shaft side can be induction hardened and ground to serve as the raceway.

2. 2. Match shaft diameter with outer diameter and width

   The inner diameter d should match the shaft or stud diameter, and the outer diameter D should be determined from the contact conditions with the rail or cam and the installation space. The listed products cover outer diameters of 16 to 310 mm, inner diameters of 10 to 35 mm, and widths of 9 to 17 mm. Stud types often express their nominal size by outer diameter D, so confirm how the model number is read.

3. 3. Judge by the outer ring allowable load

   Because the outer ring of a track roller receives the load directly and deforms by bending, the maximum dynamic radial load Fr and maximum static radial load F0r are specified separately from the bearing rated load. The applicable load is limited by the smaller of these values and the rated load, so check both.

4. 4. Estimate life using the rated load

   The basic dynamic load rating Cr is the basis for calculating rolling fatigue life, and the basic static load rating C0r is a guide to permanent deformation under static or shock loading. The listed products have Cr values of 4.68 to 22.1 kN. Where heavy shock loads apply, consider reinforced outer ring models where the series provides them.

5. 5. Handle axial loads with the base bearing

   Needle roller bases suit large radial loads in small diameters but are weak against axial loads. For applications where the shaft is not horizontal or is inclined, select a structure that can take axial loads, such as a flanged type or a double-row angular contact ball bearing base with a 30° contact angle.

6. 6. Check rotational speed and lubrication method

   The limiting rotational speed of the listed products ranges widely from 300 to 12000 r/min and also varies with seal type. For long-duration operation or dusty environments, choose models that can be regreased or stud types compatible with centralized lubrication adapters to prevent early damage from grease depletion.

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

About Track Rollers and all products

Description

Non-separable unit that generates axial load but is intended for applications without a lateral support surface. Available in NATR/NATV type (press-fit flange ring) and NUTR/PWTR/NNTR type (loose flange ring). With the PPA suffix, a PA66 axial slide ring can also be selected.

FAQ

Q. What applications are flanged support rollers suitable for?

A. They are suitable for applications that generate axial load but have no lateral support surface. They can be used for operation on slopes or inclined locations and applications where the shaft is not horizontal.

Q. What types of flanged support rollers are available?

A. There are NATR/NATV type (press-fit flange ring) and NUTR/PWTR/NNTR type (loose flange ring). The designations are NATR, NATV, NUTR ... A, PWTR ...2RS, and NNTR ...2ZL.

Q. What should be done for flanged support rollers subjected to heavy impact loads?

A. For NUTR/PWTR/NNTR types, use the outer ring reinforced version when heavy impact loads are applied.

Q. Can an axial slide ring be selected for flanged support rollers?

A. Yes, adding the PPA suffix allows selection of the version with a PA66 axial slide ring.

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

Source documents

• Catalog SKF トラックランナー軸受 (14 トラックランナー軸受) 50 pages Open page 5
  Found on: https://azuma-eg.com/catalogue/