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-driving the gearmotor so a position can be kept even when power isn’t applied. The precision surface 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 aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily installed to any flat work surface by utilizing the base worm wheel gearbox mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (motor marketed separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-velocity 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 had a need 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 range 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, material 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 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 brief 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 of Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing warmth dissipation region, streamlined sump for carrying more oil and fan of ample size which is effective in both aspect 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. Grade 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large speed reduction ratios with only 1 gear pairing in a more compact space in comparison to other types 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 noise they produce. Some drawbacks will be the general low performance and the actual fact that they generate high temperature.
Benefit of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the cool 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 frosty rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the original material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are ideal for miniature gear applications since this is often rotated smoothly without damaging the worm wheels made out of POM or various other soft materials.
4) Because of the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cool Rolled Worms give a smooth procedure and long-term durability.
Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is definitely analogous to a screw with a V-type thread, and the apparatus is definitely 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 may have an individual start or multiple starts – meaning that 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 reduced amount of 24:1. For a multi-start worm, the gear reduction equals the amount of teeth on the gear, divided by the number 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 apparatus 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 performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, heat), the worm and gear are made of 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 very quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet operation.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. Furthermore, the utilization of a softer materials for the apparatus means that it could absorb shock loads, like those skilled in large 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 rate reducers in low- to medium-swiftness applications. And, because their decrease ratio is founded on the amount of gear teeth alone, they are smaller sized than other types of gears. Like fine-pitch 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 a highly effective answer for power transmitting applications requiring high-ratio speed reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the effectiveness of a worm equipment drive depends upon the business lead angle and amount of begins on the worm – and because increased performance is always a goal, the ratio ought to be kept only possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer 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, double and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. However, there is a low transmission efficiency problem if you don’t know the how to choose the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you need to know:
1) Helix position. The worm equipment drive efficiency mostly depend on the helix angle of the worm. Usually, multiple thread worms and gears is more efficient than solitary thread worms. Proper thread worms can increase performance.
2) Lubrication. To select a brand lubricating oil is an essential factor to improve worm gearbox effectiveness. As the proper lubrication can reduce 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 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 reducing and tooth grinding of worms also can increase worm gearbox performance.
From a large transmission gearbox power to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely matches 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 check the connection between your engine and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual installation.
By using the innovative science and drive technology, we have developed several unique “square package” 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 usually a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line consists of four universal series (R/S/K/F) and a step-less speed 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 dual shaft for double-sided output or a cover for the short shaft end are optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are therefore maintenancefree. They are characterized by high performance and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
Software 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 is common for worm gears to possess reductions of 20:1, and also up to 300:1 or greater.
Usual gearing includes the initial capability which various other gearing components don’t 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 the zone stuck constantly in place.
Committed to excellence, our employees possess the most crucial priority satisfying your equipment building needs and item improvement.
Also, we consider pride in our equipment; few manufacturers have the gear to engineer steel parts as specific as we do. Even 
fewer manufacturing companies have the machining products to check on the tolerances we are able to hold.
Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow us to achieve the most challenging task requirements. The mixture of robust components, advanced manufacturer systems, reliability and our commitment to customer satisfaction makes us a top provider in advanced gearing and shafting items.
Our gear manufacturing locations have over twenty years of worm gear style experience, gained through many tasks that included varied sizes of customized worm gears to print requirements.