Worm gear

Worm Gear
Worm gears are usually used when large speed reductions are needed. The decrease ratio is determined by the number of begins of the worm and amount of tooth on the worm gear. But worm gears possess sliding contact which is silent but tends to produce heat and also have relatively low transmission effectiveness.
Many worm gears have an interesting property that no other gear set has: the worm can simply turn the gear, however the gear cannot turn the worm. This is because the position on the worm is indeed shallow that when the apparatus tries to spin it, the friction between the equipment and the worm keeps the worm in place.
This feature is useful for machines such as for example conveyor systems, in which the locking feature can become a brake for the conveyor when the motor isn’t turning. An added very interesting use of worm gears can be used on some high-performance cars and trucks.
As for the materials for production, in general, worm is constructed of hard metal as the worm gear is made from relatively soft metallic such as aluminum bronze. That is because the number of tooth on the worm equipment is relatively high compared to worm with its number of starts being generally 1 to 4, by reducing the worm equipment hardness, the friction on the worm tooth is reduced. Another feature of worm manufacturing may be the need of specialized machine for gear cutting and tooth grinding of worms. The worm gear, however, may be made with the hobbing machine used for spur gears. But due to the various tooth shape, it isn’t possible to cut a number of gears simultaneously by stacking the apparatus blanks as can be done with spur gears.
The applications for worm gears include equipment boxes, angling pole reels, guitar string tuning pegs, and where a delicate quickness adjustment by utilizing a huge speed reduction is necessary. When you can rotate the worm equipment by worm, it is generally extremely hard to rotate worm by using the worm gear. This is called the personal locking feature. The self locking feature cannot always be assured and a separate method is preferred for true positive reverse prevention.
Also there is duplex worm gear type. When using these, it is possible to adapt backlash, as when one’s teeth put on necessitates backlash adjustment, without needing a change in the guts distance. There aren’t too many manufacturers who can create this type of worm.
The worm gear is more commonly called worm wheel.
Duplex Worm Gear
· Custom production according to customer request
· Diameter from 15 to 300 mm, axial distances from 17 to 210 mm, module from 0.5 to 10, shaft size up to 500 mm
· Materials selection according to customer requirements (steel, bronze, fabric laminate or plastic material)
· All process measures (turning, hobbing, annealing, flank grinding, grinding, measuring) from a single source

micro worm gear set
Ever-power manufactures worm equipment sets, which are made up of a worm and worm wheel, for make use of in a number of industries including aerospace and military instrumentation, medical, teeth, oil and gas exploration, robotics, optical and commercial regulates. Our precision worm gear sets could be manufactured to satisfy the latest AGMA/ISO specifications up to the same as AGMA Q14 per AGMA 390. 03.
We offer an comprehensive selection of precision worm gear collection options including:
Greatest Hand Worm and Worm Wheels
(Left hand on demand)
Anti-Backlash Worm Wheels
Pin Hub and Split Hub Worm Wheels
Browse our assortment of stainless- metallic worms and bronze worm wheels. You may expect many regular sizes and have the look expertise to manufacture tailor made worm tires to printing. Both our regular and customized worm tires can be found several pitches, diameters, begins and ratios
worm gear pinion


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