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-generating the gearmotor so a position can be held 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 offers a rigid framework without adding unnecessary weight and is easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (motor offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-quickness 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 (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 regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the best level of standard in production of worm gears in gearboxes. From the look of gearbox, material selection to production practice of worm gear 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 usually available in stock or 
could be made on brief notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes have liberal ribbing for increasing warmth dissipation region, streamlined sump for carrying more oil and lover of ample size which works well in both side of rotation.
Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large quickness reduction ratios with only 1 equipment pairing in a more compact space in comparison to other styles of gears. You can expect up to a maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings may be the low level sound they produce. Some disadvantages will be the general low performance and the fact that they generate heat.
Benefit of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous framework has not been cut.
2) The top hardness after frosty rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial materials, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cold rolled worms are suitable for miniature gear applications since this is often rotated smoothly without damaging the worm wheels made out of POM or additional 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 complete. Thus, EP-Precision Cold 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 analogous to a screw with a V-type thread, and the gear is analogous to a spur gear. The worm is normally the generating component, with the worm’s thread advancing one’s teeth of the gear.
Just 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 full turn (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the number of teeth on the gear, divided by the number of starts on the worm. (That 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 gear is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and heat, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, high temperature), the worm and gear are made of dissimilar metals – for example, the worm may be made of hardened steel and the gear made of bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The usage of dissimilar metals for the worm and equipment also plays a part in quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the gear means that it could absorb shock loads, like those skilled in heavy 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 used as rate reducers in low- to medium-rate applications. And, because their reduction ratio is founded on the number of gear teeth alone, 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 tranny applications requiring high-ratio quickness reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the efficiency of a worm gear drive depends upon the business lead angle and number of begins on the worm – and because increased efficiency is always a goal, the ratio ought to be kept only 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 can be ordered through the EP Gear Guaranteed Same Time Shipment Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest type of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is 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 production process can be relatively simple. However, there is a low transmission performance 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 position. The worm equipment drive efficiency mostly rely on the helix position of the worm. Generally, multiple thread worms and gears is usually more efficient than solitary thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To choose a brand lubricating oil is an essential factor to boost worm gearbox performance. As the correct lubrication can decrease worm gear action friction and warmth.
3) Material selection and Gear Production 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 the teeth is decreased. In worm production, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox performance.
From a large 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 Box Assembly：
1) You may complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Ensure that you check the connection between your motor and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual installation.
With the help of the most advanced science and drive technology, we’ve 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, worm wheel gearbox coaxial gearbox, right angle gearbox. An NMRV series gearbox can be a typical worm gearbox with a bronze worm gear 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 act like an NMRV worm gearbox.
In the EP worm gears, the output shaft is offset by 90° from the drive shaft. A double shaft for double-sided result or a cover for the brief shaft end are elective as components. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are for that reason maintenancefree. They are characterized by high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
App of worm gears, which is comparable to a standard spur and the worm, which really is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite common for worm gears to have reductions of 20:1, and also up to 300:1 or greater.
Regular gearing includes the unique capability which other gearing components don’t have – the “worm” can effortlessly spin the part, however the “gears” cannot 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 gear attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep carefully the zone stuck in position.
Focused on excellence, our employees have the most crucial priority satisfying your equipment building needs and product improvement.
Also, we consider pride inside our equipment; few producers have the equipment to engineer metal parts as exact as we do. Even fewer manufacturing companies have the machining products to check 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 attain the most challenging project requirements. The mixture of robust materials, advanced manufacturer systems, 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 expertise, gained through many projects that included varied sizes of custom made worm gears to print requirements.