worm wheel gearbox

This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that want extremely slow and smooth rotational motion. The worm-drive design not merely minimizes backlash but also eliminates back-generating the gearmotor so a position can be kept even when power isn't applied. The precision floor 3/8” stainless steel output shaft is backed by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and can be easily mounted to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-rate applications that want high precision and torque.

Motor RPM required = 1 / (moments per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (in max speed)
Dimensions 3.43″ x 1.93″
Item Weight 5.9oz (0.375 lbs)
Output Shaft Diameter 3/8″ (0.375″)
Motor Size Compatibility Standard Spur Gear Motors

Ever-Power offers you the widest range of standard, non regular and customised worm gearbox and worm equipment motor.

Ever-Power maintains the highest level of standard in production of worm gears in gearboxes. Right from the design of gearbox, material selection to manufacturing practice of worm equipment box and gear motor.

Models: 30, 40, 50, 60, 75, 85, 100, 125, 150, 175, 200, 250, 300, 350, 430
Ratio : 5/1 to 4900/1
Center Distances : 40 mm to 400 mm
Single stage / Double stage
Small Worm Gearbox Models like C.D. 50, 60, 75, 85, 100 mm and Ratio 30/1 or 40/1 are usually obtainable in stock or could be made on brief notice by customer.
Worm gearboxes are having cast iron equipment case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes have liberal ribbing for increasing high temperature dissipation area, streamlined sump to carry more oil and lover of ample size which is effective in both aspect of rotation.

Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large speed decrease ratios with only 1 gear pairing in a more compact space in comparison to other types of gears. We offer up to a maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel gear pairings may be the low level noise they produce. Some drawbacks are the general low performance and the fact that they generate heat.

Advantage of EP's Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework is not cut.

2) The top hardness after chilly rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the original materials, and the hardness of the helicoid surface area increases to around HB240 to 260.

3) Cool rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.

4) Because of the implementation of this cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a worm wheel gearbox mirror like complete. Thus, EP-Precision Chilly Rolled Worms provide a smooth operation and long-term durability.

Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the gear is analogous to a spur gear. The worm is typically the driving component, with the worm's thread advancing the teeth of the gear.

Such as a ball screw, the worm in a worm gear might have a single start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each complete change (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the number of teeth on the gear, divided by the number of begins on the worm. (This is different from almost every other types of gears, where in fact the gear reduction can be a function of the diameters of both components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and temperature, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, temperature), the worm and equipment are made from dissimilar metals – for instance, the worm could be made of hardened steel and the gear manufactured from bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. In addition, the use of a softer material for the gear means that it can absorb shock loads, like those experienced in large equipment or crushing machines.

The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as swiftness reducers in low- to medium-acceleration applications. And, because their reduction ratio is founded on the amount of gear teeth only, they are more compact than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them ideal for hoisting and lifting applications.

EP Gear's worms and worm gears provide an effective answer for power transmission applications requiring high-ratio rate reduction in a limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the performance of a worm equipment drive depends on the lead angle and amount of starts on the worm – and because increased performance is always a goal, the ratio should be kept only possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.

Our complete line of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is level of resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations

How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. Nevertheless, there exists a low transmission performance problem if you don't know the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you need to know:

1) Helix position. The worm gear drive efficiency mostly rely on the helix position of the worm. Generally, multiple thread worms and gears is more efficient than solitary thread worms. Proper thread worms can increase performance.

2) Lubrication. To select a brand lubricating oil can be an essential factor to improve worm gearbox efficiency. As the correct lubrication can reduce worm equipment action friction and warmth.

3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened metal. The worm gear materials ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm tooth is decreased. In worm manufacturing, to use the specialized machine for gear cutting and tooth grinding of worms also can increase worm gearbox effectiveness.

From a sizable transmission gearbox power to an even small worm gearbox load, you can choose one from an array of worm reducer that precisely matches your application requirements.

Worm Gear Package Assembly：
1) You can complete the installation in six various ways.

2) The installation must be solid and reliable.

3) Make sure to examine the connection between the electric motor and the worm gear reducer.

4) You must use flexible cables and wiring for a manual installation.

With the help of the innovative science and drive technology, we've developed several unique “square container” designed from high-quality aluminium die casting with a beautiful appearance. The modular worm gearbox style series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox is certainly a standard worm gearbox with a bronze worm gear and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less swiftness variation UDL series. Their framework and function are similar to an NMRV worm gearbox.

In the EP worm gears, the output shaft is offset by 90° from the drive shaft. A dual shaft for double-sided result or a cover for the short shaft end are elective as components. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are therefore maintenancefree. They are seen as a high effectiveness and self-locking.

Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.

Worm Gear applications
Application of worm gears, which is similar to a standard spur and the worm, which really is a cylindrical equipment that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have got reductions of 20:1, and even up to 300:1 or greater.

Usual gearing includes the unique capability which other gearing components do not have – the “worm” can effortlessly spin the part, but the “gears” are not able to maneuver and fully rotate the worm-zone.

What's the real reason for this inability to rotate the gear-worm?

The angle isn't deep enough on the worm, so when the gear attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep the zone stuck in position.

Focused on excellence, our employees possess the most crucial priority satisfying your gear building needs and item improvement.

Also, we take pride in our equipment; few producers have the gear to engineer metallic parts as precise as we do. Even fewer manufacturing companies have the machining equipment to check the tolerances we are able to hold.

Being a gearing manufacturer to Automotive level companies, with a diverse supply of material types, allow all of us to attain the most challenging project requirements. The combination of robust materials, advanced manufacturer technology, reliability and our dedication to customer satisfaction makes us a high provider in advanced gearing and shafting products.

Our gear manufacturing places have over twenty years of worm gear design expertise, gained through many projects that included varied sizes of customized worm gears to print requirements.