This worm wheel gearbox gearbox utilizes a 30:1 ratio worm-drive reduction for applications that want extremely slow and smooth rotational motion. The worm-drive design not only minimizes backlash but also eliminates back-traveling the gearmotor so a position can be held even when power isn’t applied. The precision surface 3/8” stainless steel result 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 certainly 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 sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-quickness applications that require high precision and torque.
Motor RPM required = 1 / (a few 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 gives you the widest range of standard, non standard and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. Right from the look of gearbox, materials 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 Models like C.D. 50, 60, 75, 85, 100 mm and Ratio 30/1 or 40/1 are usually available in stock or can be made on brief notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is made from Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing temperature dissipation region, streamlined sump for carrying more oil and fan of ample size which works well in both part of rotation.
Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts conform to 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 1 gear pairing in a more compact space when compared with other types of gears. We offer up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some disadvantages are the general low effectiveness and the fact that they generate temperature.
Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous framework is not cut.
2) The surface hardness after chilly rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the original materials, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Chilly rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels made out of POM or various 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 Chilly Rolled Worms give a smooth operation and long-term durability.
Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the gear can be analogous to a spur gear. 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 an individual 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 reduction of 24:1. For a multi-start worm, the gear reduction equals the amount of teeth on the apparatus, divided by the amount of begins on the worm. (This is different from most other types of gears, where the gear reduction is certainly 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 actions causes friction and temperature, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and gear are made of dissimilar metals – for instance, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The utilization of dissimilar metals for the worm and gear also plays a part in quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. Furthermore, the usage of a softer materials for the gear means that it can absorb shock loads, like those skilled in heavy equipment or crushing devices.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as acceleration reducers in low- to medium-acceleration applications. And, because their reduction ratio is based on the amount of gear teeth alone, they are more compact 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 transmission applications requiring high-ratio acceleration reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends upon the lead angle and quantity of begins on the worm – and because increased efficiency is always an objective, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day 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 decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is level of resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. However, there is a low transmission effectiveness problem if you don’t understand the how to choose 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 rely on the helix angle of the worm. Usually, multiple thread worms and gears is more efficient than single thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To select a brand lubricating essential oil is an essential factor to improve worm gearbox efficiency. As the proper lubrication can reduce worm equipment action friction and high 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 reduced. In worm production, to use the specific machine for gear slicing and tooth grinding of worms also can increase worm gearbox performance.
From a big transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide range of worm reducer that precisely suits your application requirements.
Worm Gear Box Assembly：
1) You can complete the set up in six various ways.
2) The installation must be solid and reliable.
3) Be sure to verify the connection between the electric motor and the worm gear reducer.
4) You must make use of flexible cables and wiring for a manual installation.
With the help of the most advanced science and drive technology, we have developed several unique “square container” designed from high-quality aluminium die casting with a beautiful appearance. The modular worm gearbox design 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 typical 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 velocity variation UDL series. Their structure 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 result or a cover for the short shaft end are elective as add-ons. 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 performance 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 similar to a standard spur and the worm, which is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, while retaining torque or power. It’s quite common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.
Standard gearing includes the unique capability which various other gearing components do not have – the “worm” can effortlessly spin the part, however the “gears” cannot 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 apparatus 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 important priority satisfying your gear building needs and product improvement.
Also, we consider pride in our equipment; few producers have the equipment to engineer metallic parts as precise as we do. Actually fewer manufacturing companies have the machining gear to check on 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 project requirements. The mixture of robust materials, advanced manufacturer technology, reliability and our dedication to customer satisfaction makes us a high provider in advanced gearing and shafting items.
Our gear manufacturing locations have over twenty years of worm gear design knowledge, gained through many projects that included varied sizes of customized worm gears to print requirements.