This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that require 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 supported by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is certainly easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-quickness 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 had a need to achieve ten minutes per rotation (at 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 Regular Spur Gear Motors

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

Ever-Power maintains the best degree of standard in manufacturing of worm gears in gearboxes. Right from the design of gearbox, material selection to manufacturing practice of worm gear box and gear electric 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 obtainable in stock or could be made on short notice by customer.
Worm gearboxes are experiencing cast iron equipment case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and fan of ample size which is effective in both side 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 acceleration decrease ratios with only 1 equipment pairing in a far more compact space in comparison to other types of gears. You can expect up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks are the general low effectiveness and the fact that they generate high temperature.

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

2) The surface hardness after frosty rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.

3) Cool rolled worms are ideal for miniature gear applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.

4) Due to the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cold Rolled Worms provide a smooth procedure and long-term durability.

Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur gear. The worm is normally the driving component, with the worm’s thread advancing one’s teeth of the gear.

Like a ball screw, the worm in a worm gear may have a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each complete switch (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the amount of teeth on the gear, divided by the amount of begins on the worm. (This is different from almost every other types of gears, where in fact the gear reduction is usually 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 action causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, heat), the worm and gear are made from dissimilar metals – for example, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.

Although the sliding contact decreases efficiency, it provides very quiet operation. (The usage 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 in elevators. In addition, the use of a softer material for the apparatus means that it could absorb shock loads, like those experienced in weighty equipment or crushing machines.

The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as acceleration reducers in low- to medium-velocity 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 lead screws, worm gears are typically self-locking, which makes them well suited for hoisting and lifting applications.

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

Because the effectiveness of a worm gear drive depends upon the business lead angle and number of starts on the worm – and because increased effectiveness is always a goal, the ratio should be kept as low as possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.

Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment Plan for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest type of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is 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 production process can be relatively simple. Nevertheless, there exists a low transmission efficiency problem in the event that you don’t understand the how to choose the worm gearbox. 3 basic indicate choose high worm gear efficiency that you should know:

1) Helix position. The worm equipment drive efficiency mostly depend on the helix position of the worm. Generally, multiple thread worms and gears is more efficient than one thread worms. Proper thread worms can increase effectiveness.

2) Lubrication. To choose a brand lubricating oil is an essential factor to boost worm gearbox efficiency. As the proper lubrication can reduce worm equipment action friction and warmth.

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

From a huge transmission gearbox capacity to a straight small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely fits your application requirements.

Worm Gear Box Assembly:
1) You may complete the set up in six different ways.

2) The installation must be solid and reliable.

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

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

With the help of the innovative science and drive technology, we’ve developed several unique “square box” designed from high-quality aluminium die casting with a lovely appearance. The modular worm gearbox style series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, right angle gearbox. An NMRV series gearbox is 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 speed variation UDL series. Their structure 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 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 as a result maintenancefree. They are seen as a high performance 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 comparable to a standard spur and the worm, which is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite common for worm gears to possess reductions of 20:1, and even up to 300:1 or greater.

Standard gearing includes the unique capability which various other gearing components don’t have – the “worm” can effortlessly spin the part, however 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 apparatus attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep the zone stuck constantly in place.

Focused on excellence, our employees possess the most important priority satisfying your equipment building needs and product improvement.

Also, we take pride inside our equipment; few manufacturers have the gear to engineer metallic parts as exact as we do. Even fewer manufacturing businesses have the machining devices to check on the tolerances we can hold.

Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow us to achieve the most challenging project requirements. The combination of robust components, advanced manufacturer technology, reliability and our dedication to customer satisfaction makes us a top provider in advanced gearing and shafting items.

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