Crosshead Lubrication
Crosshead Lubrication
Crosshead Lubrication
The older forked type crosshead as found in earlier engines (up to the mid
1980s) used various methods to improve the lubrication of the crosshead.
Oil grooves in the lower bearings were used to distribute the oil. The
grooves in some cases extended to the edge of the bearing, although with a
reduced csa, to ensure a flow of oil through the bearing.
The lower bearing shell (tin aluminium with overlay) has oil grooves with machined wedges as shown in the diagram and
photo. The oil enters via the cut out channel in the centre. The grooves extend right to the edges of the bearing to ensure a
flow of oil, thus cooling the bearing.
THE SULZER RTA ENGINE CROSSHEAD
Con Rods - Modern RTA. Note Oil Supply Grooves in Bearing Housing.