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About: Jacking gear     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: yago:WikicatSteamTurbinesyago:Artifact100021939yago:Device103183080yago:Engine103287733yago:HeatEngine103507963yago:Instrumentality103575240yago:Internal-combustionEngine103579982yago:Machine103699975yago:Motor103789946yago:Object100002684yago:PhysicalEntity100001930deviceyago:RotaryEngine104110654yago:SteamTurbine104310604yago:Turbine104498523yago:Whole100003553 New Facet based on Instances of this Class

A jacking gear (also known as a turning gear) is a device placed on the main shaft of an engine or the rotor of a turbine. The jacking gear rotates the shaft or rotor and associated machinery (such as reduction gears and main steam or gas turbines), to ensure uniform cool-down. Without turning, hogging or sagging can occur. Additionally, the jacking gear's assistance in rotation can be used when inspecting the shaft, reduction gears, bearings, and turbines. As an auxiliary function, the jacking gear also helps to maintain a protective oil membrane at all shaft journal bearings.