Ever-Power worms and worm gears provide a highly effective solution for power transmitting applications requiring high-ratio velocity reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.
Because the performance of a worm gear drive depends upon the lead angle and quantity of begins on the worm – and because increased efficiency is always a goal, the ratio ought to be kept as low as possible. To run properly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the Ever-Power Equipment Guaranteed Same Time Shipment Program for the quickest delivery possible.
Worm gears are often used when large swiftness reductions are needed. The reduction ratio depends upon the number of begins of the worm and amount of the teeth on the worm gear. But worm gears possess sliding contact which is calm but tends to produce heat and have relatively low transmission performance.
For the materials for production, in general, worm is constructed of hard metal as the worm gear is made from relatively soft metal such as for example aluminum bronze. This is since the number of tooth on the worm gear is relatively high compared to worm with its number of starts being usually 1 to 4, by reducing the worm equipment hardness, the friction on the worm tooth is reduced. Another feature of worm manufacturing is the need of specific machine for gear cutting 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 because of the different tooth shape, it is not possible to cut several gears simultaneously 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 where a delicate quickness adjustment by utilizing a sizable speed reduction is needed. While you can rotate the worm gear by worm, it is usually 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 a separate method is recommended for true positive reverse prevention.
Also there is duplex worm gear type. When working with these, it is possible to worm drive shaft change backlash, as when one’s teeth use necessitates backlash adjustment, without requiring a change in the center distance. There are not too many producers who can create this kind of worm.
Wormwheel gearboxes pass several names, including 90-degree gearboxes, right position gearboxes, speed reducers, worm equipment reducers and worm drive gearboxes. Gear reduction boxes feature a gear arrangement when a gear in the type of a screw, also known as a worm, meshes with a worm gear. These gears are usually created from bronze and the worms are steel or stainless steel.

While worm gears act like a spur gear, the worm gearboxes are considerably smaller than other gear reduction boxes. A main benefit of worm gear reducers is usually that they generate an output that is 90° from the insight and can be utilized to transmit higher torque or reduce rotational speed. Most often, a worm gearbox offers right hand threads; to change the direction of the result, a left-hands 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 Reduction Boxes Provide Effective Quickness 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 used in applications requiring large acceleration reductions in a small 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 angle worm gearbox systems in ten frames sizes in shaft to bore, hollow bore flange install, NEMA flange, high ratio, compact, and miniature and Molded Cup Filled Housing configurations. Custom worm gearbox systems are also available. Contact our program engineers to go over your custom requirements.

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