teel on steel:
The inner and outer rings are composed of hardened and phosphated bearing steel and the spherical sliding
surfaces are treated with a running-in lubricant.

Steel on bronze:
The inner rings are composed of hardened bearing steel and the outer rings of bronze.

Stainless steel on bronze:
The outer rings are composed of stainless steel (Material no.: 1.4418) with holes for mounting the inner rings which are composed of aluminium bronze (Material no.: 2.0975).

In order to guarantee an efficient function of the bearings they require regular maintenance and lubrication which can take place via lubrication holes and oil grooves. Steel on steel spherical plain bearings are especially suitable for bearing arrangements where heavy loads of alternating direction, shock loads.