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 only minimizes backlash but also eliminates back-driving the gearmotor so a position can be held even when power is not applied. The precision floor 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-acceleration applications that want high precision and torque.
Motor RPM required = 1 / (a few minutes 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 range of standard, non standard and customised worm gearbox and worm equipment motor.
Ever-Power maintains the best level of standard in production of worm gears in gearboxes. From the look of gearbox, materials selection to production practice of worm gear 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
Center 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 can be made on brief 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 gear boxes possess liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and enthusiast of ample size which works well in both side of rotation.
Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Gear case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large swiftness decrease ratios with only one gear 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 benefit of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks are the general low efficiency and the actual 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 work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework is not 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) Chilly rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Because of the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms give a smooth operation and long-term durability.
Worm gears are made of a worm and a equipment (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. 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 generating component, with the worm’s thread advancing one’s teeth of the gear.
Such as 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 convert (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the amount of starts on the worm. (This is different from almost every 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 an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and high temperature, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, heat), the worm and gear are made of dissimilar metals – for example, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases 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 noise should be minimized, such as for example in elevators. In addition, the usage of a softer materials 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 may also be utilized as quickness reducers in low- to medium-acceleration applications. And, because their reduction ratio is founded on the worm wheel gearbox number of gear teeth alone, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are typically self-locking, making them perfect 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 rate reduction in a limited space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.
Because the performance of a worm equipment drive depends on the business lead angle and amount of starts on the worm – and because increased performance is always a goal, the ratio ought to be kept only possible. To run properly, 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 Gear Guaranteed Same Time Shipment Program for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest form of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. Nevertheless, there exists a low transmission performance problem in the event that you don’t know the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you should know:
1) Helix angle. The worm gear drive efficiency mostly rely on the helix angle of the worm. Usually, 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 essential oil is an essential factor to boost worm gearbox effectiveness. As the proper lubrication can reduce worm equipment action friction and warmth.
3) Material selection and Gear Production Technology. For worm shaft, the material ought to be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm tooth is decreased. In worm production, to use the specialized machine for gear cutting and tooth grinding of worms also can increase worm gearbox efficiency.
From a big transmission gearbox capacity to an even small worm gearbox load, you can choose one from an array of worm reducer that precisely suits your application requirements.
Worm Gear Container Assembly：
1) You may complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Ensure that you verify the connection between your motor and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual set up.
By using the most advanced science and drive technology, we have 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, correct angle gearbox. An NMRV series gearbox is 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 swiftness 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 double shaft for double-sided output or a cover for the brief shaft end are optionally available as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are for that reason maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
Program of worm gears, which is comparable to a standard spur and the worm, which really is a cylindrical equipment that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite 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 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 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 constantly in place.
Focused on excellence, our employees possess 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 companies have the machining equipment to check the tolerances we are able to hold.
Being a gearing producer to Automotive level companies, with a diverse supply of material types, allow all of us to attain the most challenging project requirements. The mixture of robust materials, advanced manufacturer technology, reliability and our commitment to client satisfaction makes us a high provider in advanced gearing and shafting items.
Our gear manufacturing places have over two decades of worm gear design knowledge, gained through many tasks that included varied sizes of custom worm gears to print requirements.