A Reduction Gear that has been in service for about 10 years/64.000h running at 750 RPM, will have made approximately 2.7 billion revolutions. Despite the rigid housing, under normal operating conditions the shafts will always have a small deflection due to the heavy weight from the clutch and flanges. This deflection, plus possible pollution in the oil, vibration, and other factors, will affect the condition of the bearings after many years of operation. The life span of certain bearings is, therefore, certainly limited.
To prevent costly unanticipated downtime and off-hire for the ship, Wärtsilä now offers this 64.000h gearbox service package
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Wärtsilä is a global leader in advanced technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers.