Ever-Power worms and worm gears provide a highly effective solution for power transmission applications requiring high-ratio quickness reduction in a restricted space using right position (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the performance of a worm equipment drive depends on the lead angle and quantity of starts on the worm – and because increased efficiency is always a goal, the ratio should be kept only possible. To run properly, worms and worm gears used together must 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 System for the quickest delivery possible.
Worm gears are often used when large acceleration reductions are needed. The reduction ratio depends upon the number of begins of the worm and quantity of tooth on the worm equipment. But worm gears have sliding contact which is silent but will produce heat and have relatively low transmission performance.
As for the materials for production, in general, worm is made of hard metal while the worm gear is made from relatively soft metal such as for example aluminum bronze. This is because the number of teeth on the worm equipment is relatively high in comparison to worm with its number of starts being generally 1 to 4, by reducing the worm gear hardness, the friction on the worm the teeth is reduced. Another characteristic of worm manufacturing is the need of specific machine for gear reducing and tooth grinding of worms. The worm gear, on the other hand, may be made with the hobbing machine used for spur gears. But due to the different tooth shape, it isn’t possible to cut many gears at once by stacking the gear blanks as can be carried out with spur gears.
The applications for worm gears include equipment 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 equipment by worm, it is usually not possible to rotate worm by using the worm gear. That is called the personal locking feature. The self locking feature cannot continually be assured and another method is recommended for true positive reverse prevention.
Also there exists duplex worm gear type. When working with these, you’ll be able to modify backlash, as when the teeth put on necessitates backlash adjustment, without needing a change in the guts distance. There are not too many producers who can generate this kind of worm.
Wormwheel gearboxes go by several names, including 90-degree gearboxes, right position gearboxes, velocity reducers, worm gear reducers and worm drive gearboxes. Gear decrease boxes feature a gear arrangement when a gear in the type of a screw, also known as a worm, meshes with a worm equipment. These gears are usually created from bronze and the worms are metal or stainless steel.
While worm gears act like a spur gear, the worm gearboxes 
are considerably smaller than other equipment reduction boxes. A main benefit of worm gear reducers is certainly that they produce an output that’s 90° from the insight and can be used to transmit higher torque or reduce rotational speed. Frequently, a worm gearbox has right hand threads; to change the direction of the result, a left-hands 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 Quickness Reduction in A Compact Design
Even though gear decrease boxes are compact, they deliver high power performance in a variety of operating scenarios. Worm drive gearboxes are typically used in applications requiring huge quickness 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 right position worm gearbox systems in ten frames sizes in shaft to bore, hollow bore flange attach, NEMA flange, high ratio, compact, and miniature and Molded Glass Filled Housing configurations. Customized worm gearbox systems are also offered. Contact our program engineers to discuss your custom requirements.
Output torques as high as 420Nm are available. Most of our worm gear reducers are designed with ≤30 arc-minutes backlash and can be supplied with as low as ≤4 arc-minutes backlash.
NOTE: Worm gearboxes Shouldn’t be used as quickness worm drive shaft increasers.