This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that require extremely slow and smooth rotational motion. The worm-drive worm wheel gearbox design not merely minimizes backlash but also eliminates back-driving the gearmotor so a posture can be kept 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 aid lots from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is easily installed to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will work with this gearbox (electric motor marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-acceleration applications that want high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (at 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 Standard Spur Gear Motors
Ever-Power offers you the widest range of standard, non regular and customised worm gearbox and worm equipment motor.
Ever-Power maintains the highest degree of standard in manufacturing of worm gears in gearboxes. Right from the look of gearbox, material selection to manufacturing practice of worm equipment 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
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 often available in stock or could 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 made of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes have liberal ribbing for increasing temperature dissipation area, streamlined 
sump for carrying more oil and enthusiast of ample size which is effective in both part of rotation.
Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with 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 quickness reduction ratios with only one equipment pairing in a more compact space in comparison to other types of gears. You can expect up to a 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 disadvantages are 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 function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework is not cut.
2) The top hardness after cool rolling is increased by 1.2 to 1 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 suitable for miniature equipment applications since this could be 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 method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms give 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, nonintersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur equipment. The worm is typically 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 full 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 gear reduction equals the amount of teeth on the gear, divided by the number of begins on the worm. (That is different from almost every other types of gears, where in fact the gear reduction can be a function of the diameters of both components.)
The meshing of the worm and the apparatus is a mixture 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, high temperature), the worm and gear are constructed with dissimilar metals – for example, the worm may be made of hardened steel and the gear manufactured from 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 contributes to quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. In addition, the use of a softer materials for the gear means that it could absorb shock loads, like those experienced in weighty equipment or crushing devices.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as velocity reducers in low- to medium-speed applications. And, because their decrease ratio is based on the number of gear teeth only, 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 transmission applications requiring high-ratio swiftness reduction in a limited space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends on the lead angle and number of starts on the worm – and because increased efficiency is always an objective, the ratio should be kept only possible. To run properly, worms and worm gears utilized together must 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 Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission needs.
Our worm gears provide smoothest, quietest type 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 exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. Nevertheless, there is a low transmission performance problem if you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm gear efficiency that you should know:
1) Helix angle. The worm gear drive efficiency mostly depend on the helix position of the worm. Usually, multiple thread worms and gears can be more efficient than one thread worms. Proper thread worms can increase performance.
2) Lubrication. To choose a brand lubricating oil is an essential factor to boost worm gearbox performance. As the correct 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 steel. The worm gear materials ought to be aluminium bronze. By reducing the worm gear hardness, the friction on the worm tooth is decreased. In worm production, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox effectiveness.
From a sizable transmission gearbox power to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely suits your application requirements.
Worm Gear Package Assembly：
1) You can complete the set up in six different ways.
2) The installation must be solid and reliable.
3) Ensure that you examine the connection between the electric motor and the worm gear reducer.
4) You must use flexible cables and wiring for a manual set up.
By using the most advanced science and drive technology, we’ve 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 a typical worm gearbox with a bronze worm gear and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less rate variation UDL series. Their framework 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 brief shaft end are elective as accessories. EP gearboxes have 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:
Because of their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
Application of worm gears, which is comparable to a standard 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 have reductions of 20:1, and even up to 300:1 or greater.
Regular 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 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 in position.
Focused on excellence, our employees possess the most crucial priority satisfying your equipment building needs and product improvement.
Also, we consider pride in our equipment; few manufacturers have the gear to engineer steel parts as precise as we do. Also fewer manufacturing businesses have the machining equipment to check on the tolerances we are able to hold.
Being a gearing producer 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 technology, reliability and our dedication 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 expertise, gained through many tasks that included varied sizes of custom worm gears to print requirements.