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-driving the gearmotor so a position can be kept even when power is not applied. The precision surface 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminium 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 Standard Spur Gear motors will continue to work with this gearbox (engine sold 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 / (moments per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need 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 Standard 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 highest level of standard in manufacturing of worm gears in gearboxes. Right from the look of gearbox, materials selection to manufacturing practice of worm gear box and gear engine.

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 available in stock or could be made on short notice by customer.
Worm gearboxes are having cast iron equipment 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 heat dissipation area, streamlined sump for carrying more oil and enthusiast of ample size which is effective in both side 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 Gear case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large rate reduction ratios with only 1 equipment pairing in a more compact space in comparison to other types of gears. We offer up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings is the low level sound they produce. Some drawbacks are the general low effectiveness and the actual fact that they generate warmth.

Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous structure has not been cut.

2) The top hardness after chilly rolling is increased by 1.2 to at least one 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) Cold rolled worms are ideal 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) Because of the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Frosty 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 non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the gear is usually 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 an individual start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full switch (360 degrees) of the worm increases the gear by one tooth. Therefore 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 starts on the worm. (This is different from most other types of gears, where the gear reduction is 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 warmth, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, warmth), the worm and equipment are made of dissimilar metals – for instance, the worm may be made of hardened steel and the gear manufactured from 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 suitable for use where noise should be minimized, such as for example in elevators. In addition, the use of a softer materials for the apparatus means that it could 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 may also be used as rate reducers in low- to medium-velocity applications. And, because their decrease ratio is founded on the amount of gear teeth only, they are more compact than other types of gears. Like worm wheel gearbox fine-pitch lead screws, worm gears are usually self-locking, making them perfect 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 acceleration reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.

Because the performance of a worm gear drive depends on the business lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears utilized 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 Program for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest form of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is 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 efficiency problem in the event that you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you ought to know:

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

2) Lubrication. To select a brand lubricating essential 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 should be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm tooth is reduced. In worm manufacturing, to use the specialized machine for gear slicing and tooth grinding of worms can also increase worm gearbox effectiveness.

From a sizable transmission gearbox power 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 Package Assembly：
1) You can complete the installation in six different ways.

2) The installation must be solid and reliable.

3) Be sure to verify the connection between the engine and the worm gear reducer.

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

By using 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 style series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox is definitely a standard worm gearbox with a bronze worm gear and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less speed variation UDL series. Their framework and function are similar to 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 output or a cover for the brief shaft end are elective as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are consequently maintenancefree. They are characterized by high effectiveness and self-locking.

Please note:
Because of their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.

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

Normal gearing includes the initial capability which additional 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 reason behind this inability to rotate the gear-worm?

The angle is not deep enough on the worm, so when the gear attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep the zone stuck in position.

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

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

Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow all of us to achieve the most challenging task requirements. The combination of robust materials, advanced manufacturer systems, reliability and our dedication to customer satisfaction makes us a top supplier in advanced gearing and shafting products.

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