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 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 result shaft is supported by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and aluminium structure offers a rigid framework without adding unnecessary weight and is usually easily mounted to any flat work surface by utilizing the bottom mounting tabs. Our Standard 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-rate applications that want high precision and torque.

Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (ten 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″
Product 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 regular and customised worm gearbox and worm equipment motor.

Ever-Power maintains the best degree of standard in production of worm gears in gearboxes. Right from the design of gearbox, materials 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
Center 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 often obtainable in stock or can be made on brief notice by customer.
Worm gearboxes are having 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 heat dissipation region, streamlined sump for carrying more oil and lover of ample size which works well in both part of rotation.

Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Quality 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large speed worm wheel gearbox decrease ratios with only one gear pairing in a far more compact space in comparison to other styles of gears. We offer up to 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 disadvantages are the general low efficiency and the actual fact that they generate temperature.

Benefit of EP’s Worm Gears – “Cool 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 due to truth that the metallic fibrous framework is not 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 initial material, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Frosty rolled worms are ideal for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.

4) Due to the implementation of the cold rolling technique, the helicoid surface 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 made of a worm and a gear (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is definitely 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 the teeth of the gear.

Like a ball screw, the worm in a worm gear may 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 change (360 degrees) of the worm advances the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the amount 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 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 effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, heat), the worm and equipment are made from dissimilar metals – for instance, the worm could be made of hardened steel and the gear made of bronze or aluminum.

Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the apparatus means that it can absorb shock loads, like those skilled in large equipment or crushing devices.

The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as quickness reducers in low- to medium-velocity applications. And, because their reduction ratio is founded on the number of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes them perfect 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 quickness reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.

Because the performance of a worm equipment drive depends on the lead angle and number of starts on the worm – and because increased effectiveness is always a goal, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears utilized together will need to have the same diametral pitch and threads.

Our complete line of worms and worm gears can be ordered through the EP Gear Guaranteed Same Day Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission 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 decreasing 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 to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. Nevertheless, there exists a low transmission efficiency problem if you don’t know the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you should know:

1) Helix angle. The worm gear drive efficiency mostly rely 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 select a brand lubricating essential oil is an essential factor to improve worm gearbox performance. As the correct lubrication can decrease worm gear action friction and heat.

3) Materials selection and Gear Production Technology. For worm shaft, the material should be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm tooth is decreased. In worm production, to use the specific machine for gear slicing and tooth grinding of worms also can increase worm gearbox efficiency.

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

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

2) The installation must be solid and reliable.

3) Make sure to verify the connection between the engine and the worm equipment reducer.

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

By using the innovative science and drive technology, we have developed several unique “square container” designed from high-quality aluminium die casting with a beautiful 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 certainly a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line consists of four universal series (R/S/K/F) and a step-less speed variation UDL series. Their structure and function act like 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 elective as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are therefore maintenancefree. They are seen as a high efficiency and self-locking.

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

Worm Gear applications
App of worm gears, which is similar to a typical 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 reductions of 20:1, and actually up to 300:1 or greater.

Typical gearing includes the initial capability which various 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 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 the zone stuck constantly in place.

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

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

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

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