Ever-Power worms and worm gears provide an effective solution for power tranny applications requiring high-ratio acceleration reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends on the business lead angle and quantity of starts on the worm – and because increased performance 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 line of worms and worm gears can be ordered through the Ever-Power Equipment Guaranteed Same Day Shipment Plan for the fastest delivery possible.
Worm gears are often used when large velocity reductions are needed. The reduction ratio is determined by the number of starts of the worm and amount of teeth on the worm equipment. But worm gears possess sliding contact which is silent but will produce heat and have relatively low transmission efficiency.
For the materials for creation, in general, worm is made from hard metal while the worm gear is made from relatively soft steel 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 gear hardness, the friction on the worm tooth is reduced. Another characteristic of worm manufacturing may be the need of specific machine for gear reducing and tooth grinding of worms. The worm gear, however, may be made out of the hobbing machine utilized for spur gears. But because of the different tooth shape, it is not possible to cut many gears simultaneously 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 where a delicate rate adjustment by utilizing a sizable speed reduction is needed. While you can rotate the worm equipment by worm, it is generally extremely hard to rotate worm utilizing the worm gear. That is called the personal locking feature. The self locking feature cannot always be assured and a separate method is recommended for true positive reverse prevention.
Also there exists duplex worm gear type. When using these, you’ll be able to modify backlash, as when one’s teeth put on 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 angle gearboxes, acceleration reducers, worm equipment reducers and worm drive gearboxes. Gear reduction boxes feature a gear arrangement when a gear in the form of a screw, also referred to as a worm, meshes with a worm gear. These gears are worm drive shaft typically 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 major benefit of worm gear reducers is that they generate an output that’s 90° from the input and can be utilized to transmit higher torque or decrease rotational speed. Most often, a worm gearbox has right hand threads; to improve 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 functionality in a variety of operating scenarios. Worm drive gearboxes are usually found in applications requiring huge velocity 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 designs and manufactures precision right 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 Glass Filled Housing configurations. Custom worm gearbox systems are also obtainable. Contact our app engineers to go over your custom requirements.
Output torques because high as 420Nm are available. Most of our worm gear reducers are designed with ≤30 arc-mins backlash and may be supplied with as low as ≤4 arc-minutes backlash.
NOTE: Worm gearboxes SHOULD NOT be used as speed increasers.