Although a comprehensive on-site gearbox inspection is desirable in many situations, there may be constraints that limit the extent of the inspection such as cost, time, accessibility and qualified personnel.
Worm gears have an inherent design advantage over other gear sets; the worm can easily turn the gear, but the gear cannot turn the worm. In lifting applications, this feature acts as a secondary brake due to limited back drivability.
Mechanical engineering plays a key role in Vietnam’s industrialization and modernization process. Under the development strategy for Vietnam mechanical engineering industry approved by the Prime Minister in 2002, the sector has gained encouraging achievements towards international integration.
Worm shaft: Made of alloy steel S45C and better its teeth with hardness up to HS60±,gear motor;3 achieved by treating with intense heat and tempering arecarefully ground so that they are very tough and gurable Worm gear
While worm gears may not be the most efficient of gear types, there are some applications where worm gears are particularly practical, such as gates, conveyors, lifts and elevators, just to name a few.