Ever-Power worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio speed reduction in a restricted space using right position (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm gear drive depends upon the lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio worm drive shaft should be kept as low as possible. To run properly, worms and worm gears used 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 Equipment Guaranteed Same Day time Shipment Program for the fastest delivery possible.
Worm gears are often used when large quickness reductions are needed. The decrease ratio is determined by the number of starts of the worm and number of teeth on the worm gear. But worm gears possess sliding contact which is silent but will produce heat and have relatively low transmission efficiency.
As for the materials for production, in general, worm is made of hard metal while the worm gear is manufactured out of relatively soft metal such as for example aluminum bronze. That is because the number of teeth on the worm equipment is relatively high compared to worm with its number of starts being generally 1 to 4, by reducing the worm gear hardness, the friction on the worm teeth is reduced. Another characteristic of worm manufacturing is the need of specific machine for gear slicing and tooth grinding of worms. The worm equipment, on the other hand, may be made out of the hobbing machine used for spur gears. But due to the different tooth shape, it isn’t possible to cut several gears at once by stacking the gear blanks as can be done with spur gears.
The applications for worm gears include gear boxes, angling pole reels, guitar string tuning pegs, and in which a delicate swiftness adjustment by utilizing a sizable speed reduction is necessary. While you can rotate the worm gear by worm, it is generally extremely hard to rotate worm utilizing the worm gear. That is called the self locking feature. The self locking feature cannot always be assured and another method is preferred for accurate positive reverse prevention.
Also there is duplex worm gear type. When using these, it is possible to adjust 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 produce this type of worm.
Wormwheel gearboxes pass several names, including 90-degree gearboxes, right angle gearboxes, speed reducers, worm gear reducers and worm drive gearboxes. Gear decrease boxes include a gear arrangement in which a equipment in the type of a screw, also known as a worm, meshes with a worm equipment. 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 considerably smaller than other equipment reduction boxes. A principal benefit of worm equipment reducers can be that they create an output that’s 90° from the input and can be used to transmit higher torque or reduce rotational speed. Frequently, a worm gearbox provides right hand threads; to improve the path of the output, a left-hand thread worm gearbox is required.
Additional benefits of worm drive gearboxes include:
High reduction ratios
High torque multiplication
Quiet operation
Absorbs shock loads
Wormwheel Gear Decrease Boxes Provide Effective Swiftness Reduction in A Compact Design
Even though gear decrease boxes are small, they deliver high power performance in a variety of operating scenarios. Worm drive gearboxes are usually found in applications requiring huge rate reductions in a little space. Examples of common motion 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 10 frames sizes in shaft to bore, hollow bore flange attach, NEMA flange, high ratio, compact, and miniature and Molded Cup Filled Housing configurations. Customized worm gearbox systems are also offered. Contact our application engineers to discuss your custom requirements.

Output torques because high as 420Nm can be found. Most of our worm gear reducers are built with ≤30 arc-moments backlash and will be supplied with only ≤4 arc-minutes backlash.
NOTE: Worm gearboxes SHOULD NOT be used as speed increasers.