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 is not applied. The precision ground 3/8” stainless steel output shaft is backed by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid framework without adding unnecessary weight and is definitely easily installed to any flat surface by utilizing the base mounting tabs. Our Regular 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-speed applications that want high precision and torque.

Motor RPM required = 1 / (moments per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed 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 Regular Spur Gear Motors

Ever-Power gives you the widest selection of standard, non regular and customised worm gearbox and worm gear motor.

Ever-Power maintains the best level of standard in manufacturing of worm gears in gearboxes. From the design of gearbox, materials selection to production 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 Versions like C.D. 50, 60, 75, 85, 100 mm and Ratio 30/1 or 40/1 are often available in stock or can be made on brief notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Steel, 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 region, streamlined sump for carrying more oil and lover of ample size which works well in both aspect of rotation.

Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with 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 rate decrease ratios with only one gear pairing in a far more compact space in comparison to other types of gears. You can expect up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some drawbacks are the general low efficiency and the fact that they generate heat.

Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous structure is not cut.

2) The surface hardness after cold rolling is increased by 1.2 to 1 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) Cold rolled worms are suitable for miniature gear applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.

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

Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing the teeth of the gear.

Such as a ball screw, the worm in a worm gear might have an individual start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each complete change (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the gear, divided by the amount of begins on the worm. (This is different from almost every other types of gears, where the gear reduction can be a function of the diameters of the two components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding worm wheel gearbox contact dominates at high reduction ratios. This sliding action causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, warmth), the worm and equipment are constructed with 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 extremely quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet operation.) This makes worm gears ideal for use where noise should be minimized, such as for example in elevators. Furthermore, the usage of a softer materials for the gear means that it can absorb shock loads, like those experienced in heavy equipment or crushing machines.

The primary benefit 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 reduction ratio is based on the number of gear teeth alone, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes them ideal for hoisting and lifting applications.

Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio velocity 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 equipment drive depends on the lead angle and number of starts on the worm – and because increased efficiency is always a goal, the ratio ought to 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 could be ordered through the EP Gear Guaranteed Same Time Shipment Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power tranny needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by lowering 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 exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also 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 gear efficiency that you need to know:

1) Helix angle. The worm gear drive efficiency mostly depend on the helix position of the worm. Generally, multiple thread worms and gears can be more efficient than solitary thread worms. Proper thread worms can increase efficiency.

2) Lubrication. To choose a brand lubricating oil can be an essential factor to boost worm gearbox effectiveness. As the correct lubrication can decrease worm equipment action friction and high temperature.

3) Material selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened steel. The worm gear material ought to be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is decreased. In worm manufacturing, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox performance.

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

Worm Gear Box Assembly：
1) You may complete the installation in six different ways.

2) The installation should be solid and reliable.

3) Make sure to examine the connection between your motor and the worm equipment reducer.

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

By using the most advanced 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, right angle gearbox. An NMRV series gearbox is a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products consists of four universal series (R/S/K/F) and a step-less speed 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 output or a cover for the brief shaft end are elective as components. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are consequently maintenancefree. They are seen as a high effectiveness and self-locking.

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

Worm Gear applications
Software of worm gears, which is comparable to a typical 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’s quite common for worm gears to possess reductions of 20:1, and even up to 300:1 or greater.

Common gearing includes the unique capability which other 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 real reason for this inability to rotate the gear-worm?

The angle is not 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.

Committed to excellence, our employees possess the most important priority satisfying your gear building needs and product improvement.

Also, we take pride in our equipment; few producers have the gear to engineer metal parts as precise as we do. Even fewer manufacturing companies have the machining apparatus to check on the tolerances we can hold.

Being a gearing manufacturer to Automotive level companies, with a diverse supply of material types, allow all of us to attain the most challenging task requirements. The combination of robust materials, advanced manufacturer technologies, reliability and our dedication to customer satisfaction makes us a high provider in advanced gearing and shafting products.

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