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-driving the gearmotor so a posture can be kept even when power is not applied. The precision floor 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid framework without adding unnecessary weight and is definitely easily mounted to any flat work surface by utilizing the bottom mounting tabs. Our Standard 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-velocity applications that require high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (at 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 Regular Spur Gear Motors
Ever-Power offers you the widest selection of standard, non regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest level of standard in production of worm gears in gearboxes. From the look of gearbox, materials selection to production 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
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 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 from Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing temperature dissipation region, streamlined sump for carrying more oil and lover of ample size which works well in both aspect of rotation.
Design Standards:
Wherever applicable, British as well as 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. Quality 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large velocity decrease ratios with only one equipment pairing in a far more compact space in comparison to other types of gears. You can expect up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some disadvantages are the general low efficiency and the fact that they generate temperature.
Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function 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 has not been cut.
2) The surface 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 increases to around HB240 to 260.
3) Cold rolled worms are ideal 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 this cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Frosty 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 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 can be analogous to a spur equipment. The worm is typically the traveling component, with the worm’s thread advancing one’s teeth of the gear.
Like a ball screw, the worm in a worm gear might 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 change (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 number of teeth on the gear, divided by the number of begins on the worm. (That is different from most other types of gears, where the gear reduction is definitely 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 temperature, which limits the efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, high temperature), the worm and equipment 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 use of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. In addition, the use of a softer material for the apparatus means that it could absorb shock loads, like those experienced in heavy equipment or crushing machines.
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 velocity reducers in low- to medium-velocity applications. And, because their decrease ratio is founded on the number of gear teeth only, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them ideal for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmission applications requiring high-ratio velocity reduction in a limited space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the performance of a worm equipment drive depends upon the lead angle and number of begins on the worm – and because increased performance is always an objective, the ratio should be kept as low as possible. To run correctly, worms and worm gears utilized together will need to have the same diametral pitch and threads.
Our complete type of worms and worm gears can be ordered through the EP Gear Guaranteed Same Time Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest form of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is resistance to back driving.
Obtainable 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. However, there exists a low transmission performance problem if you don’t know the how to choose the worm gearbox. 3 basic indicate choose high worm gear efficiency that you ought to know:
1) Helix position. The worm equipment drive efficiency mostly rely on the helix angle of the worm. Usually, multiple thread worms and gears is definitely more efficient than one thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To choose a brand lubricating oil is an essential factor to improve worm gearbox efficiency. As the correct lubrication can decrease worm equipment action friction and warmth.
3) Materials selection and Gear Production 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 production, to use the specialized machine for gear cutting and tooth grinding of worms also can increase worm gearbox effectiveness.
From a big transmission gearbox capacity to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely matches your application requirements.
Worm Gear Box Assembly：
1) You can complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Ensure that you verify the connection between your engine 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’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 definitely a standard 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 speed 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 brief shaft end are elective as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are consequently maintenancefree. They are seen as a high effectiveness and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Application of worm gears, which is comparable to a typical 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’s quite common for worm gears to have reductions of 20:1, and even up to 300:1 or greater.
Typical gearing includes the unique capability which additional gearing components don’t 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 reason behind 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 in position.
Focused on excellence, our employees have the most important priority satisfying your equipment building needs and product improvement.
Also, we consider pride in our equipment; few manufacturers have the equipment to engineer metal parts as exact as we do. Also fewer manufacturing businesses have the machining products to check on the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level companies, with a diverse supply of 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 customer satisfaction makes us a high supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over two decades of worm gear design experience, gained through many tasks that included varied sizes of custom worm gears to print requirements.