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 posture can be kept even when power is not applied. The precision floor 3/8” stainless steel worm wheel gearbox 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 certainly easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-rate 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 ten 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 Regular Spur Gear Motors

Ever-Power gives you the widest range 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. Right from the design of gearbox, materials selection to manufacturing practice of worm gear box and gear 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 Metal, duly hardened and tempered. The worm wheel is made from Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes possess liberal ribbing for increasing high temperature dissipation region, streamlined sump to carry more oil and enthusiast 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 as per BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large velocity decrease ratios with only one gear pairing in a more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks are the general low effectiveness and the actual 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 attained by work hardening when the frosty 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 cold rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the original materials, and the hardness of the helicoid surface increases to around HB240 to 260.

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

4) Due to the implementation of the 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 referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the apparatus is analogous to a spur gear. The worm is typically the driving component, with the worm’s thread advancing one’s teeth of the gear.

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 switch (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the gear 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 is certainly a function of the diameters of the two 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 action 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, warmth), 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 extremely quiet operation. (The use of dissimilar metals for the worm and gear also contributes to quiet procedure.) This makes worm gears ideal for use where noise 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 skilled in weighty equipment or crushing devices.

The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as velocity reducers in low- to medium-speed applications. And, because their reduction ratio is founded on the amount of gear teeth only, they are smaller sized than other types of gears. Like fine-pitch 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 tranny applications requiring high-ratio rate reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.

Because the effectiveness of a worm gear drive depends on the business lead angle and number of begins on the worm – and because increased efficiency is always a goal, the ratio ought to be kept as low as possible. To run correctly, 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 Equipment Guaranteed Same Day Shipment Plan 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 kind of gearing.
They provide high-ratio speed decrease 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, dual and quad start configurations

How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. However, there exists a low transmission performance 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 angle. The worm gear 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 efficiency.

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

3) Material selection and Gear Production 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 tooth is decreased. In worm manufacturing, to use the specific machine for gear trimming and tooth grinding of worms can also increase worm gearbox efficiency.

From a huge transmission gearbox capacity to a straight small worm gearbox load, you can choose one from a wide range 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 must be solid and reliable.

3) Be sure to verify the connection between the motor and the worm gear 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, correct angle gearbox. An NMRV series gearbox is usually a standard 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 quickness 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 accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on 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 are not ideal for positioning applications.

Worm Gear applications
Application of worm gears, which is similar to a typical spur and the worm, which is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite common for worm gears to have got reductions of 20:1, and even up to 300:1 or greater.

Standard gearing includes the initial 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 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 carefully the zone stuck constantly in place.

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

Also, we consider pride in our equipment; few producers have the equipment to engineer metal parts as exact as we do. Actually fewer manufacturing businesses have the machining equipment to check on the tolerances we can hold.

Being a gearing producer 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 top provider in advanced gearing and shafting products.

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