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 posture can be kept even when power is not 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 provides a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will work with this gearbox (motor 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 / (moments per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need to achieve 10 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 offers you the widest range of standard, non standard and customised worm gearbox and worm equipment motor.

Ever-Power maintains the highest degree 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 electric 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 short 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 equipment boxes have liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and enthusiast 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 comply with case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze according to BS 1400, While Equipment 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 when compared with 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 because of truth that the metallic fibrous framework has not been cut.

2) The surface hardness after frosty rolling is increased by 1.2 to at least one 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) Cold rolled worms are ideal for miniature gear applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.

4) Because of the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away 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 analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur gear. The worm is typically the driving component, with the worm’s thread advancing one’s 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 complete switch (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the amount of teeth on the gear, divided by the amount of starts on the worm. (This is different from almost every other types of gears, where in fact the gear reduction is a function of the diameters of both 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 high temperature, which limits the performance 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 worm wheel gearbox 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 equipment also plays a part in quiet operation.) This makes worm gears ideal 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 skilled in weighty 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 acceleration reducers in low- to medium-speed 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 a highly effective answer for power transmitting applications requiring high-ratio rate reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.

Because the effectiveness of a worm gear drive depends upon the lead angle and number of begins on the worm – and because increased effectiveness is always a goal, the ratio should be kept as low as possible. To run properly, 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 provide 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.
Available 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 performance 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 ought to 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 certainly more efficient than solitary thread worms. Proper thread worms can increase efficiency.

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

3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened steel. 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 manufacturing, to use the specialized machine for gear slicing and tooth grinding of worms also can increase worm gearbox effectiveness.

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

Worm Gear Container Assembly：
1) You can complete the set up in six various 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 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 box” 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 can be a typical worm gearbox with a bronze worm gear and a worm. Our Helical gearbox products consists 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 double shaft for double-sided result or a cover for the brief shaft end are optionally available as components. EP gearboxes have 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 suitable 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 carefully the zone stuck constantly in place.

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

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

Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow all of 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 knowledge, gained through many projects that included varied sizes of customized worm gears to print requirements.