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 only minimizes backlash but also eliminates back-generating the gearmotor so a posture can be held 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 support lots from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (engine marketed 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 / (moments per rotation desired / 30)
Example: 1 / (10 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″
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 standard and customised worm gearbox and worm equipment motor.
Ever-Power maintains the best level of standard in production of worm gears in gearboxes. From the design of gearbox, material selection to manufacturing practice of worm equipment 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 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 Steel, 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 region, streamlined sump for carrying more oil and enthusiast of ample size which works well in both part of rotation.
Design Standards:
Wherever applicable, British along with 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 when compared with other types of gears. You can expect up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level noise they produce. Some drawbacks are the general low efficiency and the fact that they generate warmth.
Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the chilly 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 in comparison to the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are ideal for miniature equipment applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Due to 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 complete. Thus, EP-Precision Cold Rolled Worms provide a smooth operation and long-term durability.
Worm gears are made of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur equipment. The worm is typically the generating component, with the worm’s thread advancing the teeth of the gear.
Like 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 switch (360 degrees) of the worm advances the equipment by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the amount of teeth on the gear, divided by the number of starts on the worm. (This is different from almost every other types of gears, where in fact the gear reduction is usually a function of the diameters of the two 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 actions causes friction and heat, which limits the efficiency 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 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 contributes to quiet procedure.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. In addition, 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 can also be used as velocity reducers in low- to medium-quickness applications. And, because their reduction ratio is founded on the amount of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are typically self-locking, which makes them perfect for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio quickness reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm gear drive depends on the business lead angle and amount of starts on the worm – and because increased effectiveness is always a goal, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears utilized 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 Time Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest kind of gearing.
They provide high-ratio speed reduction 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, double and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear manufacturing 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 should know:
1) Helix angle. The worm equipment drive efficiency mostly depend on the helix angle of the worm. Generally, multiple thread worms and gears is certainly more efficient than solitary thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To select a brand lubricating oil can be an essential factor to improve worm gearbox performance. As the proper lubrication can reduce worm gear action friction and heat.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened metal. The worm gear material ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is decreased. In worm manufacturing, to use the specialized machine for gear slicing and tooth grinding of worms can also increase worm gearbox performance.
From a big transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely suits your application requirements.
Worm Gear Package Assembly：
1) You may complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Be sure to examine the connection between the engine and the worm gear reducer.
4) You must use flexible cables and wiring for a manual installation.
By using the most advanced science and drive technology, we have developed several unique “square package” 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, right angle gearbox. An NMRV series gearbox is certainly a standard 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 rate 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 result or a cover for the brief shaft end are elective as add-ons. 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 effectiveness and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.
Worm Gear applications
Software of worm gears, which is comparable to a typical spur and the worm, which is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to possess reductions of 20:1, and even up to 300:1 or greater.
Typical gearing includes the unique capability which 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 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 constantly in place.
Committed to excellence, our employees possess the most crucial priority satisfying your gear worm wheel gearbox building needs and product improvement.
Also, we consider pride inside our equipment; few producers have the gear to engineer steel parts as specific as we do. Actually fewer manufacturing companies have the machining tools to check the tolerances we can hold.
Being a gearing manufacturer to Automotive level businesses, with a diverse way to obtain material types, allow all of us to attain the most challenging project requirements. The combination of robust materials, advanced manufacturer technology, reliability and our commitment to client satisfaction makes us a top provider in advanced gearing and shafting items.
Our gear manufacturing places have over twenty years of worm gear style knowledge, gained through many tasks that included varied sizes of custom worm gears to print requirements.