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 ground 3/8” stainless steel output shaft is backed by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and aluminium structure provides a rigid framework without adding unnecessary worm wheel gearbox weight and is definitely easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (electric motor sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed applications that want high precision and torque.

Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need to achieve 10 minutes per rotation (in 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 selection of standard, non standard and customised worm gearbox and worm equipment motor.

Ever-Power maintains the highest level of standard in production of worm gears in gearboxes. From the design of gearbox, material selection to manufacturing practice of worm gear 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 Versions 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 equipment 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 possess liberal ribbing for increasing high temperature dissipation area, streamlined sump for carrying more oil and lover of ample size which is effective in both part 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 comply with phosphorous-bronze as per BS 1400, While Gear case conforms to C.I. Quality 20, IS210.

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

Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by function hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms because of reality that the metallic fibrous structure has not been cut.

2) The top hardness after cool 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) Chilly rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.

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

Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur gear. The worm is normally the traveling component, with the worm’s thread advancing the teeth of the gear.

Just like a ball screw, the worm in a worm gear might have a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full turn (360 degrees) of the worm increases the equipment by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (This is different from almost every other types of gears, where in fact the gear reduction is certainly a function of the diameters of both components.)
The meshing of the worm and the apparatus is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, high temperature), the worm and gear are made from dissimilar metals – for example, the worm could 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 utilization of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. In addition, the use of a softer material for the gear means that it could absorb shock loads, like those experienced in weighty equipment or crushing devices.

The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as velocity reducers in low- to medium-quickness applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are smaller sized than other styles of gears. Like fine-pitch 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 transmitting applications requiring high-ratio velocity reduction in a limited space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.

Because the performance of a worm equipment drive depends upon the business lead angle and amount of begins on the worm – and because increased efficiency is always an objective, the ratio should be kept as low as possible. To run properly, worms and worm gears used 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 Gear Guaranteed Same Day time Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting 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 reducing ratios.
With some ratios, there is level of resistance to back driving.
Offered 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 is a low transmission effectiveness problem if you don’t understand the how to choose 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 depend on the helix position of the worm. Generally, multiple thread worms and gears is usually more efficient than one thread worms. Proper thread worms can increase performance.

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

3) Material selection and Gear Production Technology. For worm shaft, the material ought to be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm 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 big transmission gearbox power to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely fits your application requirements.

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

2) The installation should be solid and reliable.

3) Be sure to examine the connection between the engine and the worm equipment reducer.

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

With the help of the most advanced science and drive technology, we have 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 is a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less velocity 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 dual shaft for double-sided result or a cover for the brief shaft end are elective as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and 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
App of worm gears, which is similar to a typical spur and the worm, which really is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, while retaining torque or power. It’s quite common for worm gears to have 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, but the “gears” cannot maneuver and fully rotate the worm-zone.

What’s the reason behind 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.

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

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

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

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