INFORMATION & SELECTION DATA SHEET
OVERVIEW

Durbal heavy-duty rod ends are standardized ready-to-be-installed machine components serving the transmission of static and dynamic forces in combination with swiveling, tilting or rotating movement. Durbal rod ends were initially used in the aircraft industry in 1917. For over 80 years, Durbal rod ends have achieved the highest standards in all industrial applications and their Certified ISO 9001 products represent the highest quality available.

Durbal rod ends consists of three basic types,

The maintenance-free spherical rod ends for high load/low speed applications.

The roller bearing for medium load, medium speed applications.

The double row ball bearing for low load, high speed applications.

The standard Durbal rod end frame is Electro-Galvanized for superior corrosion protection

Durbal is now available in STAINLESS in the BEM-BEF spherical series listed below.

BASIC LOAD RATINGS

• Static load ratings of anti friction bearing rod ends.

The static load rating (Co) of a anti friction bearing rod end corresponds to that of a static radial load causing a lasting overall deformation of 1/10.000 of the roller body diameter at the contact point most highly stressed the most between roller body and the raceway.

• Static load ratings of plain bearing rod ends.

The static load rating (Co) of a plain bearing rod end corresponds to that of a static radial load that does not yet cause a lasting deformation at the weakest housing section. It contains at least a 1.2 fold security compared to the yield stress of the material used for the rod end housing.

• Dynamic load rating of anti friction bearing rod ends.

The dynamic load rating (C) of an anti friction bearing rod end is the external radial load, unchangeable in size and direction, at which 90% of a large statistical universe of identical rod ends will equal or exceed 1 million rotations or swiveling movements.

• Dynamic load ratings of plain bearing rod ends.

The dynamic load rating (C) is the parameter for the calculation of a dynamically loaded Durbal rod end with the integrated spherical plain bearing. The dynamic movement plane is tilting, swiveling and rotating movements under load.

IMPORTANT

Basic load ratings always depend on the definitions they are based on. For this reason it is not always possible to compare basic load rating data supplied by different manufactures.

• Operating temperatures

Durbal heavy duty anti friction bearing rod ends can be used for operating temperatures between -20 degrees centigrade and + 120 degrees Centigrade.

The temperature range of the DURBAL heavy duty rod ends with the integral spherical plain bearing is between -30 degrees and + 60 degrees centigrade without affecting the load ability. Higher temperatures will reduce the load ability taken into account for the calculation of the working life under the temperature factor c₂.

With over 600 different styles and types of rod ends in stock in the USA, we can ship the same day from either our stocks or the factory stocks for over 98% of our orders. Durbal has supplied the bearing and rod end industry since 1916.

We can customize rod ends to fit your special applications.