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-driving the gearmotor so a position can be held even when power isn’t applied. The precision ground 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and aluminium worm wheel gearbox structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat work surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will work with this gearbox (electric motor sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-quickness 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 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 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. From the design of gearbox, material selection to manufacturing practice of worm equipment 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 gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes possess liberal ribbing for increasing temperature dissipation area, streamlined sump to carry 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 conform to phosphorous-bronze as per BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.

High reduction gear
Worm and wheel gear pairings provide large quickness reduction ratios with only one equipment pairing in a more compact space when compared with other styles of gears. We offer up to a maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel gear pairings may be 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 – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous framework is not cut.

2) The surface hardness after cool rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.

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

4) Because of the implementation of the cold rolling technique, 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 give a smooth procedure and long-term durability.

Worm gears are made of a worm and a equipment (sometimes referred to as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is definitely analogous to a screw with a V-type thread, and the gear can be analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the 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 complete turn (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 gear reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (That is different from most 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 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 efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, high temperature), the worm and gear are made of dissimilar metals – for example, the worm may be made of hardened metal and the gear manufactured from bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and equipment also plays a part in quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. In addition, the utilization of a softer material for the apparatus means that it could absorb shock loads, like those skilled in large equipment or crushing devices.

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 swiftness reducers in low- to medium-swiftness applications. And, because their reduction ratio is founded on the amount of gear teeth by itself, they are more compact than other styles 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 transmitting applications requiring high-ratio swiftness reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest kind of gearing.

Because the efficiency of a worm gear drive depends upon the lead angle and quantity of starts on the worm – and because increased effectiveness is always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.

Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double 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 efficiency problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you ought to know:

1) Helix position. The worm gear drive efficiency mostly rely on the helix angle of the worm. Usually, multiple thread worms and gears is usually more efficient than single thread worms. Proper thread worms can increase effectiveness.

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

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 the teeth is reduced. In worm production, to use the specialized machine for gear reducing and tooth grinding of worms also can increase worm gearbox effectiveness.

From a big transmission gearbox power to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely suits your application requirements.

Worm Gear Container Assembly：
1) You can complete the set up in six various ways.

2) The installation should be solid and reliable.

3) Make sure to check the connection between the electric 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 design 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 standard 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 acceleration 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 optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are for that reason maintenancefree. They are characterized by high efficiency and self-locking.

Please note:
Because of their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.

Worm Gear applications
App of worm gears, which is similar to a standard spur and the worm, which really is a cylindrical equipment that resembles a screw, allows for smaller gearboxes or planetary drives, whilst 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, however 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 isn’t 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.

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

Also, we consider pride inside our equipment; few manufacturers have the equipment to engineer metallic parts as precise as we do. Also fewer manufacturing companies have the machining products to check the tolerances we are able to hold.

Being a gearing producer to Automotive level businesses, with a diverse way to obtain material types, allow us to achieve the most challenging project requirements. The mixture of robust components, advanced manufacturer technology, reliability and our commitment to client satisfaction makes us a top supplier in advanced gearing and shafting items.

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