This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that require extremely slow and smooth rotational motion. The worm-drive design not merely minimizes backlash but also eliminates back-traveling the gearmotor so a position can be held even when power is not applied. The precision floor 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and aluminium structure offers a rigid framework without adding unnecessary 
weight and is certainly easily installed to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-velocity applications that require high precision and torque.
Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor needed to achieve ten 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 selection of standard, non standard and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest degree of standard in manufacturing of worm gears in gearboxes. From the look of gearbox, materials selection to manufacturing 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
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 can be made on short 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 equipment boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump to carry more oil and fan of ample size which is effective in both side 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 conform to 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 swiftness decrease ratios with only 1 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 is the low level sound they produce. Some drawbacks are the general low performance and the fact that they generate warmth.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous structure has not been 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 area increases to around HB240 to 260.
3) Cool rolled worms are suitable for miniature equipment 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 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 provide a smooth operation and long term durability.
Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the apparatus 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.
Such as a ball screw, the worm in a worm gear may have a single start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each worm wheel gearbox complete convert (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the number of teeth on the gear, divided by the amount of begins on the worm. (That is different from almost every other types of gears, where in fact the gear reduction can be a function of the diameters of the two components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and warmth, which limits the efficiency of worm gears to 30 to 50 percent. To be able 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 metal and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and equipment 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. In addition, the use of a softer material for the gear means that it could absorb shock loads, like those experienced in large equipment or crushing machines.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as acceleration reducers in low- to medium-quickness applications. And, because their decrease 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 an effective answer for power transmission applications requiring high-ratio swiftness reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm gear drive depends upon the lead angle and number of starts on the worm – and because increased efficiency is always an objective, the ratio ought to be kept only possible. To run properly, 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 quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest form of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is resistance to back driving.
Offered 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 production process is also relatively simple. However, there exists a low transmission efficiency problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm gear efficiency that you ought to know:
1) Helix angle. The worm equipment drive efficiency mostly depend on the helix position 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 choose a brand lubricating essential oil can be an essential factor to improve worm gearbox efficiency. As the proper lubrication can decrease worm equipment action friction and high temperature.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened steel. The worm gear materials ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is reduced. In worm manufacturing, to use the specialized machine for gear cutting and tooth grinding of worms can also 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 fits your application requirements.
Worm Gear Box Assembly：
1) You can complete the set up in six different ways.
2) The installation should be solid and reliable.
3) Be sure to examine the connection between the electric motor and the worm gear 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 have developed several unique “square box” 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 typical worm gearbox with a bronze worm gear and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less swiftness variation UDL series. Their structure 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 double shaft for double-sided output or a cover for the brief shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are as a result maintenancefree. They are seen as a high performance 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, while 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.
Usual gearing includes the unique capability which additional gearing components do not 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 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.
Committed to excellence, our employees have the most important priority satisfying your gear building needs and product improvement.
Also, we consider pride in our equipment; few producers have the gear to engineer metallic parts as precise as we do. Also fewer manufacturing businesses have the machining gear 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 combination of robust materials, advanced manufacturer technologies, reliability and our dedication to customer satisfaction makes us a top provider in advanced gearing and shafting products.
Our gear manufacturing locations have over twenty years of worm gear style experience, gained through many projects that included varied sizes of customized worm gears to print requirements.