Rod ends consist of an eye-shaped head with integral shank forming a housing and a standard spherical plain bearing, or a spherical plain bearing inner ring, or a spherical plain bearing inner ring and a sliding layer between the bore of the head and the inner ring. As a rule, rod ends are available with left or right-hand female or male threads. Rod ends from AST have the sliding contact surface combinations steel-on-steel, steel-on-bronze, steel-on-PTFE composite material, and steel-on-PTFE fabric.
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Rod Ends Requiring Lubrication
Steel-on-steel and steel-on-bronze rod ends have very wear-resistant sliding surfaces and perform well under conditions of lubricant starvation. Rod ends with this sliding contact surface combination require regular relubrication. They are particularly suited for bearing arrangements where heavy alternating loads have to be accommodated.
Maintenance-Free Rod Ends (Rod Ends Requiring No Lubrication)
Maintenance-free (lubrication free) rod ends from AST have two different sliding contact surfaces: steel-on-PTFE composite material and steel-on-PTFE fabric (depending on the diameter of the shaft). Both have very low friction and can be operated without maintenance. They are used for applications where long bearing lives are required without maintenance, or where operating conditions, such as inadequate lubrication or the absence of lubrication make the use of steel-on-steel bearing inadvisable. The maintenance-free bearings are primarily intended for applications where loads are heavy and have a constant direction.
AST has 164 standard rod ends in its online catalog. They come with a choice between inch and metric dimensions along with male or female threads. Contact us if you have any special needs.
Other Types of Spherical Bearings
There are other types of "spherical bearings" including spherical plain bearings, spherical ball bearings and spherical roller bearings. To learn more about the various kinds of spherical bearings, please visit "Spherical Bearings – Accommodating Misalignment" which explains the similarities and differences between the various types.
AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates
To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015
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