Worm and worm wheel
Worm gears teeth resembles ACME screw thread which mates with a helical gear, except that it is made to envelope the worm as seen along the worm's axis. Operation of worm gears is analogous to a screw. The relative motion between these gears is sliding rather than rolling. The uniform distribution of tooth pressures on these gears enables use of metals with inherently low coefficients of friction such as bronze wheel gears with hardened steel worm gears. These gears rely on full fluid film lubrication and require heavy oil compounded to enhance lubricity and film strength to prevent metal contact.
Worm gear are the perfect choice when the need is for producing large motor speed Gear reductions in a single step. A single reduction range of 5:1 - 100:1 is considered quite a normal thing for Worm Gears. It can climb up to 127:1 or even more, under special circumstances. Worm Wheel Gears are quite in operation. Using a single-lead worm along with a 100 tooth wheel, can do wonders in a single simple step.
Actually by taking a low motor out put of 100 rpm, worm gears can give you 1 rpm with 100 times of the torque (approx). This means that if two of these worm wheel gears sets is put in series, a whopping 10,000:1 speed reduction, is not a remote possibility any more. This can drive, for example a huge telescope with even a tiny motor. For safety linked systems, a worm should not be applied as a braking device, for example as in hoists.
Worm Gears are right angle drives providing large speed ratios on comparatively short center distances from 1/4” to 11”. When properly mounted and lubricated they function as the quietist and smoothest running type of gearing. Because of the high ratios possible with worm gearing, maximum speed reduction can be accomplished in less space than many other types of gearing. Worm and worm gears operate on non-intersecting shafts at 90 degree angles. Worm gears are generally used when large gear reduction is needed. Wrapped around the central axle, the worms have one or more teeth in the form of screwed threads that rotate the gears. These gears have an unique property, the worm can easily turn gears but gears cannot turn worm. The friction between the two holds the worm in place. This feature makes this gear fit for use in industrial conveyor system and in some high performance cars and trucks.
We are one of the acclaimed companies engaged in manufacturing worm gears. Wrapped around a central axle, a worm gear is an inclined plane having one or more teeth in the form of screwed threads. The worm gear has concave faces to fit the curvature of the worm so as to provide line of contact instead of point of contact. With the unique property of easily turning the gear, worm gears are used when large gear reductions in minimal spaces are required. Worm gears available at our company, We are recognized to be of the highest quality standards. We produce gears that operate with less noise and vibration. Our worm gears are made of both ferrous and non-ferrous materials such as mild steel, alloy steel & carbon steel.
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