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 floor 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and aluminum structure offers a rigid framework without adding unnecessary weight and is easily installed to any flat surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-velocity applications that want high precision and torque.

Motor RPM required = 1 / (mins 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 Regular Spur Gear Motors

Ever-Power gives you the widest range of standard, non standard and customised worm gearbox and worm gear motor.

Ever-Power maintains the best level of standard in production of worm gears in gearboxes. Right from the design of gearbox, material selection to manufacturing practice of worm gear 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
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 could be made on brief notice by customer.
Worm gearboxes are experiencing cast iron gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.

Ever-Power worm equipment boxes have liberal ribbing for increasing heat dissipation area, streamlined sump to carry more oil and enthusiast of ample size which is effective in both side of rotation.

Design Standards:
Wherever applicable, British as well as 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. Grade 20, IS210.

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

Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by function hardening when the cool 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 surface hardness after cold 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 increases to around HB240 to 260.

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

4) Because of the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Cold Rolled Worms give a smooth operation and long-term durability.

Worm gears are made of a worm and a gear (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts worm wheel gearbox oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the gear can be analogous to a spur gear. The worm is typically the traveling 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 an individual start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full switch (360 degrees) of the worm increases the equipment by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of begins on the worm. (This is different from most other types of gears, where in fact the gear reduction is certainly a function of the diameters of the two components.)
The meshing of the worm and the apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and heat, 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 gear are made of dissimilar metals – for example, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.

Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. In addition, the use of a softer material for the gear means that it could 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 may also be utilized as rate reducers in low- to medium-rate applications. And, because their reduction ratio is based on the amount of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch lead screws, worm gears are typically self-locking, which makes them ideal for hoisting and lifting applications.

Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power transmitting applications requiring high-ratio speed reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the performance of a worm gear drive depends upon the business lead angle and quantity of starts on the worm – and because increased performance 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 could be ordered through the EP Equipment Guaranteed Same Day time Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest form of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is level of resistance to back driving.
Available 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 can be relatively simple. Nevertheless, there exists a low transmission performance problem if you don’t know the how to choose the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you should know:

1) Helix position. The worm gear drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears is certainly 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 proper lubrication can decrease worm gear action friction and temperature.

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

From a big transmission gearbox capacity to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely suits your application requirements.

Worm Gear Box Assembly：
1) You may complete the installation in six various ways.

2) The installation must be solid and reliable.

3) Be sure to check the connection between the 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’ve developed several unique “square package” designed from high-quality aluminium die casting with a lovely appearance. The modular worm gearbox design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox is a typical worm gearbox with a bronze worm gear and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less quickness 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 double shaft for double-sided output or a cover for the brief shaft end are optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are for that reason maintenancefree. They are characterized by high effectiveness and self-locking.

Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.

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

Typical gearing includes the unique capability which other gearing components don’t have – the “worm” can effortlessly spin the part, however the “gears” cannot 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 apparatus 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 important priority satisfying your gear building needs and item improvement.

Also, we take pride in our equipment; few producers have the equipment to engineer steel parts as exact as we do. Actually fewer manufacturing businesses have the machining products to check on the tolerances we are able to hold.

Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow all of us to achieve the most challenging project requirements. The mixture of robust materials, advanced manufacturer systems, reliability and our commitment to customer satisfaction makes us a high supplier in advanced gearing and shafting items.

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