Ever-Power worms and worm gears provide a highly effective solution for power transmitting applications requiring high-ratio speed reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.
Because the efficiency of a worm equipment drive depends on the lead angle and amount of starts on the worm – and because increased efficiency is always an worm drive shaft objective, the ratio should be kept only possible. To run correctly, worms and worm gears utilized together will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears can be ordered through the Ever-Power Gear Guaranteed Same Time Shipment Program for the fastest delivery possible.
Worm gears are often used when large acceleration reductions are needed. The decrease ratio is determined by the number of begins of the worm and number of teeth on the worm equipment. But worm gears have sliding get in touch with which is tranquil but tends to produce heat and also have relatively low transmission performance.
As for the materials for production, in general, worm is constructed of hard metal while the worm gear is made from relatively soft steel such as aluminum bronze. This is since the number of teeth on the worm equipment is relatively high compared to worm with its number of begins being usually 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 slicing and tooth grinding of worms. The worm gear, however, may be made out of the hobbing machine used for spur gears. But because of the various tooth shape, it is not possible to cut many gears at once by stacking the apparatus blanks as can be done with spur gears.
The applications for worm gears include gear boxes, fishing pole reels, guitar string tuning pegs, and in which a delicate speed adjustment by utilizing a large speed reduction is needed. While you can rotate the worm equipment by worm, it is normally extremely hard to rotate worm utilizing the worm gear. That is called the self locking feature. The self locking feature cannot continually be assured and another method is recommended for accurate positive reverse prevention.
Also there is duplex worm gear type. When working with these, you’ll be able to adapt backlash, as when one’s teeth wear necessitates backlash adjustment, without needing a change in the center distance. There are not too many producers who can generate this type of worm.
Wormwheel gearboxes pass several names, including 90-degree gearboxes, right position gearboxes, speed reducers, worm gear reducers and worm drive gearboxes. Gear decrease boxes include a gear arrangement in which a gear in the kind of a screw, also known as a worm, meshes with a worm gear. These gears are usually made from bronze and the worms are metal or stainless steel.

While worm gears are similar to a spur equipment, the worm gearboxes are significantly smaller than other equipment reduction boxes. A main benefit of worm gear reducers is that they generate an output that is 90° from the input and can be utilized to transmit higher torque or reduce rotational speed. Most often, a worm gearbox has right hand threads; to change the path of the result, a left-hand thread worm gearbox is required.
Additional advantages of worm drive gearboxes include:
High reduction ratios
High torque multiplication
Quiet operation
Absorbs shock loads
Wormwheel Gear Reduction Boxes Provide Effective Acceleration Reduction in A Compact Design
Even though gear decrease boxes are compact, they deliver high power overall performance in a variety of operating scenarios. Worm drive gearboxes are typically found in applications requiring large velocity reductions in a little space. Examples of common movement control applications include:
Tuning instruments
Elevators
Conveyor belts
Automated gates
Precision Manufactured Worm Drive Gearboxes
Ever-Power styles and manufactures precision correct position worm gearbox systems in ten frames sizes in shaft to bore, hollow bore flange mount, NEMA flange, high ratio, small, and miniature and Molded Cup Filled Housing configurations. Customized worm gearbox systems are also available. Contact our app engineers to discuss your custom requirements.

Output torques since high as 420Nm are available. Most of our worm equipment reducers are designed with ≤30 arc-a few minutes backlash and may be supplied with as low as ≤4 arc-minutes backlash.
NOTE: Worm gearboxes SHOULD NOT be used as velocity increasers.