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-traveling the gearmotor so a posture can be kept even when power is not applied. The precision floor 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminium structure provides a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (electric motor offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed applications that want high precision and torque.

Motor RPM required = 1 / (a few minutes per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor had a need to achieve 10 minutes per rotation (at 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 Standard Spur Gear Motors

Ever-Power offers you the widest selection of standard, non standard and customised worm gearbox and worm equipment motor.

Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the look 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 Models 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 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 heat dissipation area, streamlined sump to carry more oil and enthusiast of ample size which works well in both side of rotation.

Design Standards:
Wherever applicable, British as well as 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 equipment pairings provide large rate decrease ratios with only 1 equipment pairing in a more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings may be the low level noise they produce. Some disadvantages will be 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 area has been achieved by function 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 top hardness after chilly rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.

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

4) Because of the implementation of this cold rolling technique, 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 procedure and long term durability.

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

Such as 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 turn (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 apparatus reduction equals the number of teeth on the gear, divided by the amount of begins on the worm. (This is different from most 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 an assortment 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 therefore, temperature), the worm and gear are made from dissimilar metals – for example, the worm could be made of hardened metal and the gear made of bronze or aluminum.

Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The usage of dissimilar metals for the worm and equipment also plays a part in quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the apparatus means that it could absorb shock loads, like those experienced in large equipment or crushing devices.

The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as swiftness reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the number of gear teeth only, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are usually self-locking, making them well suited 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 velocity reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.

Because the effectiveness of a worm equipment drive depends upon the lead angle and amount of starts on the worm – and because increased efficiency is always an objective, 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 line of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, dual and quad start configurations

How exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. Nevertheless, there is a low transmission efficiency problem if you don’t understand the how to select the worm gearbox. 3 basic point to choose high worm gear efficiency that you ought to know:

1) Helix position. The worm equipment drive efficiency mostly rely on the helix worm wheel gearbox position of the worm. Generally, multiple thread worms and gears can be more efficient than one thread worms. Proper thread worms can increase efficiency.

2) Lubrication. To select a brand lubricating essential oil can be an essential factor to boost worm gearbox performance. As the correct lubrication can reduce 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 materials ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is decreased. In worm production, to use the specific machine for gear slicing and tooth grinding of worms also can increase worm gearbox efficiency.

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

Worm Gear Container Assembly：
1) You can complete the set up in six various ways.

2) The installation should be solid and reliable.

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

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

By using the innovative 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 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 acceleration 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 double shaft for double-sided output or a cover for the short shaft end are optionally available 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:
Because of their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.

Worm Gear applications
App of worm gears, which is similar to a typical spur and the worm, which really is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have reductions of 20:1, and also 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” cannot maneuver and fully rotate the worm-zone.

What’s the reason behind this inability to rotate the gear-worm?

The angle isn’t 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 crucial priority satisfying your gear building needs and product improvement.

Also, we take pride inside our equipment; few manufacturers have the equipment to engineer steel parts as precise as we do. Actually fewer manufacturing businesses have the machining tools to check on the tolerances we are able to hold.

Being a gearing manufacturer to Automotive level businesses, with a diverse way to obtain material types, allow all of us to achieve the most challenging task requirements. The combination of robust components, advanced manufacturer technologies, reliability and our commitment to client satisfaction makes us a high provider in advanced gearing and shafting products.

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