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 merely minimizes backlash but also eliminates back-driving the gearmotor so a posture can be kept even when power is not applied. The precision surface 3/8” stainless steel output shaft is backed 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 can be easily installed to any flat surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (motor offered separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-swiftness 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 had a need to achieve 10 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 Standard Spur Gear Motors
Ever-Power gives you the widest selection of standard, non regular and customised worm gearbox and worm equipment 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
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 available in stock or could be made on brief notice by customer.
Worm gearboxes are experiencing 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 gear boxes possess liberal ribbing for increasing warmth dissipation region, streamlined sump for carrying more oil and enthusiast of ample size which is effective in both aspect 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 gear pairings provide large rate reduction ratios with only one equipment pairing in a far more compact space when compared with other types of gears. We offer up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings is the low level noise they produce. Some drawbacks will be the general low effectiveness and the fact that they generate heat.
Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous framework is not 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 initial materials, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cold rolled worms are ideal for miniature gear applications since this can be rotated smoothly without damaging the worm wheels crafted from 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 away with a mirror like finish. Thus, EP-Precision Cool Rolled Worms give a smooth operation and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the gear is usually analogous to a spur equipment. The worm is typically the traveling component, with the worm’s thread advancing one’s teeth of the gear.
Just like a ball screw, the worm in a worm gear might 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 increases the equipment by one tooth. Therefore 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 apparatus, divided by the amount of starts on the worm. (This is different from most other types of gears, where the gear reduction is definitely a function of the diameters of the two 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 performance of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, warmth), the worm and gear are constructed with dissimilar metals – for instance, the worm could be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. Furthermore, the utilization of a softer materials for the apparatus means that it can absorb shock loads, like those skilled in heavy equipment or crushing machines.
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-acceleration applications. And, because their decrease 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 typically self-locking, which makes 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 transmitting applications requiring high-ratio velocity reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends on the business lead angle and quantity of begins on the worm – and because increased performance is always a goal, the ratio should be kept as low as possible. To run properly, 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 Equipment Guaranteed Same Day time Shipment Program for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power tranny 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 worm wheel gearbox reducing ratios.
With some ratios, there is level of resistance to back driving.
Obtainable 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 is a low transmission performance problem in the event that you don’t understand the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you need to know:
1) Helix position. The worm equipment drive efficiency mostly rely 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 efficiency.
2) Lubrication. To select a brand lubricating oil can be an essential factor to boost worm gearbox performance. As the correct lubrication can reduce worm equipment action friction and temperature.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened metal. The worm gear material should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm the teeth is decreased. In worm production, to use the specific machine for gear reducing and tooth grinding of worms also can increase worm gearbox effectiveness.
From a sizable transmission gearbox power to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely matches your application requirements.
Worm Gear Container 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 make use of flexible cables and wiring for a manual set up.
By using the most advanced science and drive technology, we’ve developed several unique “square container” 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, right 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 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 result 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 are consequently maintenancefree. They are characterized by high effectiveness and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t suitable 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, allows for 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.
Standard 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 real reason for this inability to rotate the gear-worm?
The angle isn’t 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.
Focused on excellence, our employees possess the most important priority satisfying your gear building needs and item improvement.
Also, we take pride inside our equipment; few producers have the equipment to engineer metal parts as specific as we do. Even fewer manufacturing companies have the machining apparatus to check the tolerances we can hold.
Being a gearing manufacturer to Automotive level companies, with a diverse way to obtain material types, allow all of us to achieve the most challenging task requirements. The mixture of robust materials, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a high supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over two decades of worm gear design expertise, gained through many tasks that included varied sizes of custom worm gears to print requirements.