Engr. Shafiul Bari
Marine Engineering Expert
Shafiul Bari is a seasoned Marine Engineer with extensive experience in ship design, maintenance, and marine propulsion systems. With a deep technical knowledge of ship engineering and a passion for advancing maritime technology, Shafiul shares practical insights and expert advice to help marine professionals and enthusiasts better understand the complexities of ship systems. Through his website, he aims to bridge the gap between technical theory and real-world application, fostering a community of informed and skilled maritime engineers. When not immersed in ship engines and technical manuals, Shafiul enjoys exploring the latest innovations in marine technology and mentoring aspiring marine engineers.
Articles by Engr. Shafiul Bari
Draw and explain starting air valve
.sav .starting air valve .sa line Materials The body of the valve could be of mild steel, the spindle of high tensile or stainless steel, and the valve and seat could have the contact faces stellite or hardened. Stellite It … Continue reading →
Types of lubrication:
Hydrodynamic Lubrication: Cont oil film due to moving surfaces. Film due to motion of the moving parts. Journal bearing Hydrostatic Lubrication: Oil film doesn’t form naturally but pressure needs to be applied externally. Crosshead bearing Boundary Lubrication: Thin film between … Continue reading →
Ball Bearing and Roller Bearing:
.ball bearing .roller bearing Ball bearing have single contact on it rolling race. Friction is less, heat generation is less. Designed for low load application. Thus grease lubrication is enough. Roller bearing contact point is an entire line, friction is … Continue reading →
Crosshead bearing
The crosshead bearing design in latest engines depends on the pressure of the lube oil supplied to them. In MAN engine, the crosshead lube oil pressure is same as that of main lube oil system. This is due to the … Continue reading →
Bearing Survey:
inspection and survey of a bearing .bearing survey .bs .mebs .mbs Prior to Opening Bearing for Repair/ Survey: Safety check for main engine: Before undertaking any work on the engine, the following safety checked should be carried out: Tool box … Continue reading →
Main Engine Safety Devices, Alarms, Trips and Shut Down:
Main engine safety systems are critical for protecting the engine and ensuring safe operation of ships. They typically include: Safety Devices Alarms Trips and Shutdowns Trips and shutdowns automatically stop the engine in dangerous conditions: Interlocks: Interlocks prevent starting the … Continue reading →
Crosshead bearing failure:
.crosshead bearing failure .cross head bearing .chbf .ch bearing .c/h bearing Crosshead bearing failure: .cross head bearing failure .chbf .cbf Possible causes/ Possible defects of cross head bearing failure are: Due to reuse of old spare, ageing, unavailability of … Continue reading →
Thrust Bearing
When the crank throw is loaded by the gas pressure through the connecting rod mechanism, the arms of the crank throw deflect in the axial direction of the crankshaft, generating axial vibrations. These vibrations may be transferred to the ship’s … Continue reading →
Crankpin bearing Clearance:
.crank pin bearing clearence .cpbc .bebc .bbc → Turn the concerned crank to BDC Measure the clearance in the crankpin bearing by inserting a feeler gauge at the bottom of the bearing shell on both sides The wear limit for … Continue reading →
Crosshead Bearing and guide shoe Clearance:
.crosshead bearing clearance .chbc .ch clearance Link: https://www.meoexams.com/post/main-engine-bearings-clearance-cross-head-bearing-and-guide-clearance