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-traveling the gearmotor so a position can be held even when power isn’t applied. The precision ground 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily installed to any flat work 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 ideal for turn-tables, time-lapse systems and low-speed applications that want high precision and torque.
Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (in 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 regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the best degree of standard in manufacturing of worm gears in gearboxes. From the design of gearbox, materials selection to production practice of worm equipment 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 obtainable in stock or can be made on brief notice by customer.
Worm gearboxes are experiencing cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and lover of ample size which is effective in both part of rotation.
Design Standards:
Wherever applicable, British as well as Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze according to BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large speed decrease ratios with only one equipment pairing in a far more compact space in comparison to other types of gears. You can expect up to worm wheel gearbox maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some disadvantages will be the general low efficiency and the fact that they generate temperature.
Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous framework is not cut.
2) The surface hardness after frosty rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the original materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are suitable for miniature gear applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.
4) Due to the implementation of this cold rolling technique, 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 made of a worm and a gear (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm can be analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing the teeth of the gear.
Such as a ball screw, the worm in a worm gear might have a single start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each complete change (360 degrees) of the worm increases the equipment by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-start worm, the apparatus 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 can be a function of the diameters of both components.)
The meshing of the worm and the gear is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, heat), the worm and equipment 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 decreases efficiency, it provides very quiet operation. (The utilization 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 in elevators. Furthermore, the use of a softer materials for the gear means that it can absorb shock loads, like those experienced in heavy equipment or crushing machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as quickness reducers in low- to medium-quickness applications. And, because their reduction ratio is based on the number of gear teeth alone, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes them ideal 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 restricted space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind 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 performance is always a goal, the ratio ought to 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 line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears provide smoothest, quietest type of gearing.
They offer high-ratio speed reduction 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, double 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 effectiveness problem if you don’t know the how to select the worm gearbox. 3 basic point to choose high worm gear efficiency that you need to know:
1) Helix position. The worm gear drive efficiency mostly depend on the helix position of the worm. Usually, multiple thread worms and gears is definitely more efficient than single thread worms. Proper thread worms can increase performance.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to boost worm gearbox efficiency. As the correct lubrication can reduce worm gear action friction and temperature.
3) Materials 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 equipment hardness, the friction on the worm teeth is decreased. In worm manufacturing, to use the specific machine for gear cutting and tooth grinding of worms also can increase worm gearbox performance.
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 Box Assembly：
1) You may complete the set up in six different ways.
2) The installation should be solid and reliable.
3) Make sure to examine the connection between your electric motor and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual set up.
With the help of the innovative science and drive technology, we have developed several unique “square container” designed from high-quality aluminium die casting with a lovely appearance. The modular worm gearbox design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, right angle gearbox. An NMRV series gearbox is a typical 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 swiftness variation UDL series. Their structure 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 optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are therefore maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Application of worm gears, which is comparable to a typical spur and the worm, which really 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 reductions of 20:1, and also up to 300:1 or greater.
Common gearing includes the unique capability which various other gearing components do not have – the “worm” can effortlessly spin the part, however the “gears” are not able to 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.
Focused on excellence, our employees possess the most important priority satisfying your equipment building needs and product improvement.
Also, we take pride in our equipment; few producers have the gear to engineer steel parts as precise as we do. Even fewer manufacturing companies have the machining tools to check on the tolerances we can hold.
Being a gearing manufacturer to Automotive level businesses, 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 commitment to customer satisfaction makes us a high provider in advanced gearing and shafting items.
Our gear manufacturing locations have over two decades of worm gear style knowledge, gained through many projects that included varied sizes of custom worm gears to print requirements.