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 only minimizes backlash but also eliminates back-traveling the gearmotor so a posture can be held even when power isn't applied. The precision ground 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid worm wheel gearbox framework without adding unnecessary weight and is definitely easily installed to any flat work surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will work with this gearbox (electric motor offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-acceleration applications that require high precision and torque.

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

Ever-Power gives 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 look of gearbox, material selection to production practice of worm equipment box and gear engine.

Models: 30, 40, 50, 60, 75, 85, 100, 125, 150, 175, 200, 250, 300, 350, 430
Ratio : 5/1 to 4900/1
Middle 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 available in stock or can be made on short notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made from Chill Cast Phosphorous Bronze.

Ever-Power worm equipment boxes possess liberal ribbing for increasing heat dissipation area, streamlined sump for carrying more oil and lover of ample size which is effective in both aspect of rotation.

Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large velocity reduction ratios with only one gear pairing in a more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings is the low level noise they produce. Some disadvantages will be the general low efficiency and the actual fact that they generate temperature.

Advantage of EP’s Worm Gears - “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous structure is not cut.

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

3) Frosty 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) Due to the implementation of this cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Cool Rolled Worms give a smooth operation and long term durability.

Worm gears are made of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm is certainly analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur equipment. The worm is typically the generating component, with the worm’s thread advancing one's teeth of the gear.

Just like a ball screw, the worm in a worm gear may have a single start or multiple starts - and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full turn (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of begins on the worm. (That is different from almost every other types of gears, where the gear reduction can be a function of the diameters of both components.)
The meshing of the worm and the gear is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and temperature, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and equipment are made of dissimilar metals - for example, the worm may be made of hardened steel and the gear made of bronze or aluminum.

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

The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as velocity reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the number of gear teeth by itself, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, making them perfect for hoisting and lifting applications.

Worms & Worm Gears
EP Gear's worms and worm gears provide an effective answer for power tranny applications requiring high-ratio speed reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.

Because the efficiency of a worm gear drive depends on the business lead angle and quantity of begins on the worm - and because increased efficiency is always an objective, the ratio ought to be kept only possible. To run properly, worms and worm gears utilized together will need to have the same diametral pitch and threads.

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

How exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. However, there is a low transmission effectiveness 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 angle. The worm gear drive efficiency mostly rely on the helix angle of the worm. Usually, multiple thread worms and gears is definitely more efficient than single thread worms. Proper thread worms can increase performance.

2) Lubrication. To choose a brand lubricating oil is an essential factor to improve worm gearbox effectiveness. As the correct lubrication can decrease worm gear action friction and temperature.

3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm tooth is reduced. In worm production, to use the specialized machine for gear trimming and tooth grinding of worms can also increase worm gearbox efficiency.

From a big transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide range of worm reducer that precisely suits 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) Be sure to check the connection between your electric motor and the worm gear reducer.

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

With the help of the most advanced science and drive technology, we have developed several unique “square package” designed from high-quality aluminium die casting with a beautiful appearance. The modular worm gearbox design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, right angle gearbox. An NMRV series gearbox is definitely a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less rate 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 brief shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are therefore maintenancefree. They are characterized by high efficiency 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 typical spur and the worm, which is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, while retaining torque or power. It is common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.

Typical gearing includes the initial capability which additional 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 reason behind this inability to rotate the gear-worm?

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

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

Also, we consider pride in our equipment; few producers have the equipment to engineer steel parts as precise as we do. Actually fewer manufacturing companies have the machining gear to check the tolerances we can hold.

Being a gearing manufacturer to Automotive level businesses, with a diverse supply of material types, allow all of us to attain the most challenging task requirements. The mixture of robust materials, advanced manufacturer technologies, reliability and our commitment to client satisfaction makes us a high supplier in advanced gearing and shafting products.

Our gear manufacturing places have over two decades of worm gear style experience, gained through many tasks that included varied sizes of custom worm gears to print requirements.