Main Journal Grinding

Grinding or machining and polishing of crankshaft main journals is one of our specialities. Our repairs are guaranteed to be completed to OEM (original equipment manufacturers) tolerances and surface finish specifications.

The only limit to the diameter catered for is the physical space available within the engine to mount our equipment.

For this sort of work the crankshaft has to be rotated, this is usually achieved with the engine barring gear.

Due to restricted access on the smaller engines this sort of work tends to be performed on main engines. Typically B&W, MAN, Mirrlees, Pielstick, Sulzer, and Wartsila.


main journal grinding
On Site Grinding of a Mirrlees K Major Main Journal
(12.5" (317.5mm) Diameter)