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-generating the gearmotor so a position can be kept even when power isn’t applied. The precision surface 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 aluminium structure offers a rigid framework without adding unnecessary weight and is usually easily installed to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-swiftness applications that want high precision and torque.
Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor needed to achieve ten 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 gives you the widest selection of standard, non regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the design of gearbox, materials selection to production 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 Models 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 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 constructed of Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and fan of ample size which works well 
in both part of rotation.
Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large speed reduction ratios with only 1 equipment pairing in a more compact space in comparison to other styles of gears. We offer up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some drawbacks are the general low performance and the fact that they generate heat.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework has not been cut.
2) The top hardness after chilly rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the initial materials, and the hardness of the helicoid surface area 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 crafted from POM or 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 finish. Thus, EP-Precision Cold Rolled Worms give 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, nonintersecting 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 normally the driving component, with the worm’s thread advancing the teeth of the gear.
Just 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 complete convert (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-start worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of starts 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 an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, temperature), the worm and equipment are made from dissimilar metals – for example, the worm could be made of hardened metal and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and equipment also plays a part in quiet operation.) 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 can absorb shock loads, like those experienced in weighty equipment or crushing machines.
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 quickness reducers in low- to medium-quickness applications. And, because their decrease ratio is based on the amount of gear teeth only, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are usually 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 transmitting applications requiring high-ratio quickness reduction in a limited space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.
Because the performance of a worm equipment drive depends upon the lead angle and amount of begins on the worm – and because increased efficiency is always an objective, the ratio should 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 can be ordered through the EP Gear Guaranteed Same Day Shipment Plan for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest form of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing 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 production process is also relatively simple. Nevertheless, there is a low transmission performance problem if you don’t understand the how to choose the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you should know:
1) Helix position. The worm gear drive efficiency mostly rely on the helix position of the worm. Generally, multiple thread worms and gears is more efficient than one thread worms. Proper thread worms can increase performance.
2) Lubrication. To select a brand lubricating oil can be an essential factor to boost worm gearbox effectiveness. As the proper lubrication can decrease worm gear action friction and temperature.
3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is worm wheel gearbox decreased. In worm manufacturing, to use the specialized machine for gear trimming and tooth grinding of worms can also increase worm gearbox efficiency.
From a big transmission gearbox power 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 Package Assembly：
1) You can complete the set up in six various 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 make use of flexible cables and wiring for a manual installation.
By using the most advanced science and drive technology, we have 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 certainly a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less speed 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 double shaft for double-sided result or a cover for the brief shaft end are optionally available as components. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are therefore 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
Program of worm gears, which is similar to a typical spur and the worm, which really 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 have got reductions of 20:1, and actually up to 300:1 or greater.
Usual gearing includes the unique capability which other gearing components do not 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 isn’t 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 constantly in place.
Focused on excellence, our employees have the most crucial priority satisfying your gear building needs and item improvement.
Also, we take pride inside our equipment; few producers have the gear to engineer metal parts as exact as we do. Also fewer manufacturing businesses have the machining tools to check 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 achieve the most challenging project requirements. The mixture of robust materials, advanced manufacturer technologies, reliability and our dedication to customer satisfaction makes us a top supplier in advanced gearing and shafting items.
Our gear manufacturing locations have over two decades of worm gear style expertise, gained through many projects that included varied sizes of custom made worm gears to print requirements.