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 only minimizes backlash but also eliminates back-traveling the gearmotor so a posture can be kept even when power is not applied. The precision surface 3/8” stainless steel output shaft is backed by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard 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-acceleration 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 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 gives you the widest range of standard, non standard 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 look of gearbox, material worm wheel gearbox selection to manufacturing 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 usually available in stock or could be made on short 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 have liberal ribbing for increasing temperature dissipation area, streamlined sump to carry more oil and lover of ample size which works well in both aspect 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 velocity reduction ratios with only 1 equipment 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 benefit of the Worm and Wheel equipment pairings may be the low level sound they produce. Some disadvantages are the general low effectiveness and the actual fact that they generate heat.

Advantage of EP’s Worm Gears – “Cool 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 due to fact that the metallic fibrous framework has not been cut.

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

3) Cool rolled worms are suitable for miniature gear applications since this is often rotated smoothly without damaging the worm wheels made out of POM or other soft materials.

4) Because of the implementation of this cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms give a smooth procedure and long-term durability.

Worm gears are made of a worm and a gear (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the gear can be analogous to a spur gear. The worm is normally the driving component, with the worm’s thread advancing one’s 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 full turn (360 degrees) of the worm advances the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the amount of starts on the worm. (That is different from almost every other types of gears, where in fact the gear reduction is certainly a function of the diameters of both 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 actions causes friction and warmth, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, heat), the worm and equipment are constructed with 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 usage of dissimilar metals for the worm and gear also contributes to quiet procedure.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. Furthermore, the use of a softer materials for the apparatus 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-swiftness applications. And, because their reduction 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 ideal for hoisting and lifting applications.

Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power tranny applications requiring high-ratio rate reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.

Because the performance of a worm gear drive depends on the business lead angle and amount of starts on the worm – and because increased performance is always an objective, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears used 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 Shipment Plan for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission 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 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 exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. However, there exists a low transmission performance problem in the event that you don’t know the how to choose the worm gearbox. 3 basic point to choose high worm gear efficiency that you need to know:

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

2) Lubrication. To select a brand lubricating oil can be an essential factor to improve worm gearbox effectiveness. As the correct lubrication can decrease worm equipment action friction and warmth.

3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should 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 reduced. In worm production, to use the specialized machine for gear trimming and tooth grinding of worms also can increase worm gearbox efficiency.

From a huge transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely suits 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) Ensure that you examine the connection between the motor and the worm equipment reducer.

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

With the help of the most advanced science and drive technology, we’ve developed several unique “square box” 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 gear and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less quickness 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 dual 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 therefore maintenancefree. They are characterized by high performance and self-locking.

Please note:
Because of 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 equipment that resembles a screw, permits smaller gearboxes or planetary drives, whilst 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.

Standard gearing includes the initial capability which other gearing components do not 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 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 in position.

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

Also, we consider pride inside our equipment; few producers have the equipment to engineer metallic parts as exact as we do. Even fewer manufacturing businesses have the machining equipment to check the tolerances we are able to hold.

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

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