A locked, screw-shaped worm ‘mates’ with a worm wheel connected to it at a right angle. Input power to the worm makes it turn thus generating power to the worm wheel.
What’s the ultimate benefit? By utilising this method, a worm gearbox can do one of two things: drastically increase torque or drastically reduce speed.
Essentially, the same questions apply to worm gearbox purchases as any gearbox:
In the grand scheme of things, worm gearboxes are pretty affordable and don’t vary much in price. In fact, the cheapest worm gearbox is about $700, the most expensive only $200 more at around $900.
Worm gearboxes are like all gearboxes, sturdy but totally dependent on the right amount of lubrication. So what happens if a worm gearbox gets insufficient lubricant or, potentially worse, the wrong lubricant?
Worm gearboxes and bearing housings need a complete flush and refill once in a while. You can generally tell when the time has come when the sump starts to overheat or there is an overabundance of sludge and rust.
Flushing removes any accumulations of contaminants, water and solid matter from the gearbox via a process of clean fluid circulation.
Most popular Worm Drive Gearbox suppliers and brands on IndustrySearch are CGB Precision Products, HMA Group, Electric Motor Power, Drive Systems, Treotham Automation, Sumitomo Drive Technologies, Motordrives Australia Pty Ltd.