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 only minimizes backlash but also eliminates back-generating the gearmotor so a posture can be held even when power isn't applied. The precision ground 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-velocity applications that require high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor had a need to achieve ten minutes per rotation (in 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 Regular 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 degree of standard in production of worm gears in gearboxes. From the design of gearbox, materials 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
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 obtainable in stock or can be made on short notice by customer.
Worm gearboxes are experiencing 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 equipment boxes have liberal ribbing for increasing warmth dissipation region, streamlined sump to carry more oil and enthusiast of ample size which works well in both aspect 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 comply with 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 quickness reduction ratios with only one gear 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 benefit of the Worm and Wheel equipment pairings is the low level noise they produce. Some drawbacks are the general low effectiveness and the actual fact that they generate warmth.
Advantage of EP’s Worm Gears - “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms because of reality that the metallic fibrous framework is not cut.
2) The top hardness after cold 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) Cool rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Due to the implementation of this cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Cool Rolled Worms provide a smooth operation and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is analogous to a screw with a V-type thread, and the gear is analogous to a spur gear. The worm is typically the traveling 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 an individual start or multiple starts - and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full change (360 degrees) of the worm advances the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the gear, divided by the amount of begins on the worm. (That is different from most other types of gears, where the gear reduction is usually a function of the diameters of the two components.)
The meshing of the worm and the gear 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 effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, warmth), the worm and gear are made of dissimilar metals - for example, the worm could be made of hardened steel 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 contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. In addition, the usage of a softer material for the apparatus means that it could absorb shock loads, like those skilled in weighty equipment or crushing devices.
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 velocity reducers in low- to medium-velocity applications. And, because their reduction ratio is founded on the number of gear teeth by itself, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes them perfect 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 swiftness reduction in a limited space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.
Because the performance of a worm gear drive depends on the lead angle and quantity of begins on the worm - and because increased effectiveness is always an objective, 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 can be ordered through the EP Gear Guaranteed Same Day time Shipment System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer 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 reducing ratios.
With some ratios, there is 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. However, there exists a low transmission efficiency problem if you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm gear efficiency that you need to know:
1) Helix position. The worm equipment drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears can be more efficient than single thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To choose a brand lubricating oil is an essential factor to improve worm gearbox effectiveness. As the correct lubrication can reduce worm gear action friction and warmth.
3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is reduced. In worm production, to use the specific machine for gear reducing and tooth grinding of worms can also increase worm gearbox performance.
From a huge transmission gearbox capacity to a straight small worm gearbox load, you can choose one from a wide range of worm reducer that precisely suits your application requirements.
Worm Gear Package Assembly：
1) You may complete the set up in six various ways.
2) The installation should be solid and reliable.
3) Make sure to examine the connection between the motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual installation.
By using the innovative science and drive technology, we have developed several unique “square box” designed from high-quality aluminium die casting with a lovely 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 typical worm gearbox with a bronze worm gear and a worm. Our Helical gearbox product line consists 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 dual shaft for double-sided output or a cover for the brief shaft end are elective as components. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are for that reason maintenancefree. They are characterized by high efficiency and self-locking.
Please note:
Due to 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 standard spur and the worm, which is a cylindrical equipment that resembles a screw, permits smaller gearboxes or planetary drives, while retaining torque or power. It is common for worm gears to have got reductions of 20:1, and actually up to 300:1 or greater.
Standard gearing includes the initial capability which additional gearing components do not have - the “worm” can effortlessly spin the part, but the “gears” are not able to 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 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 crucial priority satisfying your gear building needs and product improvement.
Also, we take pride in our equipment; few producers have the gear to engineer steel parts as exact as we do. Even fewer manufacturing companies have the machining products to check the tolerances we can hold.
Being a gearing manufacturer to Automotive level companies, with a diverse way to obtain material types, allow us to attain the most challenging task requirements. The combination of robust materials, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a top provider in advanced gearing and shafting products.
Our gear manufacturing locations have over twenty years of worm gear design expertise, gained through many worm wheel gearbox projects that included varied sizes of custom worm gears to print requirements.