Difference between MAN and SULZER crosshead

SULZERMAN
Crosshead bearing surface area is smallerLarge crosshead bearing surface area
Bearing shell is smooth surfaceGrooves with machined channel to retain lubricating oil
The lube oil is supplied by separate crosshead pumpThe lube oil is supplied by same main lube oil system pump
The lube oil pressure is maintained at 12-16 barThe oil pressure is maintained at 2-4 bar i.e. system pressure
Lube oil is injected once in one cycle @ 20 deg. Before TDCInjected twice every engine cycle
Lube oil is supplied to crosshead by means of swinging or articulated pipe at crossheadLube oil is supplied to crosshead by means of telescopic pipe connected to the guide

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