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 posture can be kept even when power isn’t applied. The precision floor 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 aluminum structure offers a rigid framework without adding unnecessary weight and is definitely easily installed to any flat work surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to 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 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need to achieve ten 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 Regular Spur Gear Motors
Ever-Power offers 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 manufacturing of worm gears in gearboxes. Right from the look 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
Middle 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 obtainable in stock or could 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 of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes have liberal ribbing for increasing high temperature dissipation area, streamlined sump to carry more oil and enthusiast of ample size which works well in both part 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 Gear case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large velocity decrease ratios with only one equipment pairing 
in a more compact space when compared with other types of gears. We offer up to 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 efficiency and the actual fact that they generate high temperature.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The worm wheel gearbox 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 structure has not been cut.
2) The surface hardness after cold rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the original material, 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 could be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Because of 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 Chilly Rolled Worms provide a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur equipment. The worm is typically the traveling component, with the worm’s thread advancing the teeth of the gear.
Like a ball screw, the worm in a worm gear may 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 increases the gear by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the amount of begins on the worm. (That 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 apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and temperature, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, temperature), the worm and gear are made from dissimilar metals – for instance, the worm could be made of hardened metal and the gear manufactured from bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The usage of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. In addition, the use of a softer materials for the apparatus means that it can absorb shock loads, like those experienced in large equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as swiftness reducers in low- to medium-swiftness applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, making them well suited 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 speed reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the performance of a worm equipment drive depends upon the lead angle and amount of begins on the worm – and because increased effectiveness is always an objective, the ratio should be kept as low as possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete line of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest form of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. Nevertheless, there exists a low transmission efficiency problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you need to know:
1) Helix angle. The worm gear drive efficiency mostly depend on the helix angle of the worm. Usually, multiple thread worms and gears is certainly more efficient than one 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 proper lubrication can decrease worm gear action friction and high temperature.
3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened metal. The worm gear material should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is reduced. In worm manufacturing, to use the specialized machine for gear reducing and tooth grinding of worms can also increase worm gearbox efficiency.
From a huge transmission gearbox capacity to an even small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely fits your application requirements.
Worm Gear Container Assembly：
1) You may complete the installation 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 make use of flexible cables and wiring for a manual set up.
By using the innovative science and drive technology, we’ve 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 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 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 short shaft end are optionally available as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and 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 are not suitable for positioning applications.
Worm Gear applications
Software of worm gears, which is similar to a typical 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 even up to 300:1 or greater.
Common gearing includes the initial capability which various other 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 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 in position.
Committed to excellence, our employees have the most important priority satisfying your gear building needs and item improvement.
Also, we take pride in our equipment; few manufacturers have the gear to engineer metallic parts as precise as we do. Actually fewer manufacturing businesses have the machining devices to check on the tolerances we are able to 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 components, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a high supplier in advanced gearing and shafting items.
Our gear manufacturing places have over two decades of worm gear style knowledge, gained through many tasks that included varied sizes of custom worm gears to print requirements.