worm wheel gearbox

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-traveling the gearmotor so a posture can be kept even when power isn’t applied. The precision ground 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminum structure offers a rigid framework without adding unnecessary weight and is easily installed to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (motor sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-acceleration 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 needed 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 Standard Spur Gear Motors

Ever-Power offers you the widest selection of standard, non regular 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 look 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
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 often 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 Steel, duly hardened and tempered. The worm wheel is made from Chill Cast Phosphorous Bronze.

Ever-Power worm equipment boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and enthusiast 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 as per BS 1400, While Equipment case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel gear pairings provide large velocity reduction ratios with only one equipment pairing in a 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 is the low level noise they produce. Some disadvantages are the general low performance and the actual fact that they generate high temperature.

Benefit of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained 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 top hardness after frosty rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the original material, and the hardness of the helicoid surface area increases to around HB240 to 260.

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

4) Because of the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Chilly 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 nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the gear is definitely analogous to a spur equipment. The worm is typically the driving 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 change (360 degrees) of the worm increases the equipment by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-start worm, the gear reduction equals the amount of teeth on the gear, divided by the number of starts on the worm. (This is different from most other types of gears, where the gear reduction can be 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 high temperature, which limits the worm wheel gearbox efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, heat), the worm and equipment are constructed with dissimilar metals – for instance, the worm may 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 gear also contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as for example in elevators. In addition, the use of a softer materials for the gear means that it could absorb shock loads, like those experienced in large equipment or crushing machines.

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 rate reducers in low- to medium-speed applications. And, because their decrease ratio is based on the number of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch lead screws, worm gears are typically self-locking, making them perfect for hoisting and lifting applications.

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

Because the performance of a worm gear drive depends on the lead angle and number of starts on the worm – and because increased efficiency is always a goal, the ratio should be kept only possible. To run properly, worms and worm gears used together must 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 time Shipment Program for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmission 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 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. However, there exists a low transmission performance problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm gear efficiency that you should know:

1) Helix angle. 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 one thread worms. Proper thread worms can increase performance.

2) Lubrication. To choose a brand lubricating oil is an essential factor to boost worm gearbox performance. As the proper lubrication can decrease worm gear action friction and temperature.

3) Material selection and Gear Production Technology. For worm shaft, the material ought to be hardened steel. The worm gear material 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 trimming and tooth grinding of worms also can increase worm gearbox effectiveness.

From a sizable 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 Package Assembly:
1) You can complete the set up in six various ways.

2) The installation must be solid and reliable.

3) Ensure that you verify the connection between the electric motor and the worm equipment reducer.

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

By using the innovative science and drive technology, we’ve developed several unique “square package” 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, right angle gearbox. An NMRV series gearbox is usually a typical 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 rate variation UDL series. Their framework 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 dual shaft for double-sided result or a cover for the brief shaft end are elective as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are therefore maintenancefree. They are characterized by high effectiveness and self-locking.

Please note:
Because of their relatively high backlash (~1-2°), worm gears are not 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, while retaining torque or power. It is common for worm gears to have reductions of 20:1, and even up to 300:1 or greater.

Regular 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 real reason for 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 constantly in place.

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

Also, we consider pride in our equipment; few manufacturers have the gear to engineer steel parts as precise as we do. Also fewer manufacturing businesses have the machining equipment to check the tolerances we are able to hold.

Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow all of 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 provider in advanced gearing and shafting items.

Our gear manufacturing places have over twenty years of worm gear design experience, gained through many tasks that included varied sizes of customized worm gears to print requirements.