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-traveling the gearmotor so a position can be held even when power is not applied. The precision surface 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 aluminium structure provides a rigid framework without adding unnecessary weight and is certainly easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will work with this gearbox (electric motor offered separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-swiftness applications that want high precision and torque.
Motor RPM required = 1 / (moments 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″
Item Weight 5.9oz (0.375 lbs)
Output Shaft Diameter 3/8″ (0.375″)
Motor Size Compatibility Regular Spur Gear Motors
Ever-Power gives you the widest selection of standard, non regular and customised worm gearbox and worm equipment motor.
Ever-Power maintains the highest degree of standard in manufacturing of worm gears in gearboxes. From the design 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
Middle 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 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 high temperature dissipation region, streamlined sump to carry more oil and fan of ample size which is effective in both side of rotation.
Design Standards:
Wherever applicable, British along with 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. Grade 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large acceleration decrease ratios with only one gear pairing in a far more compact space in comparison to other styles of gears. We offer up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings may be the low level noise they produce. Some drawbacks will be the general low effectiveness and the actual fact that they generate high temperature.
Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous structure is not cut.
2) The surface hardness after cool rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are suitable for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Due to the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Frosty Rolled Worms provide a smooth procedure and long term durability.
Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur equipment. The worm is normally 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 convert (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-begin worm, the apparatus reduction equals the number 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 in fact the gear reduction can be a function of the diameters of the two components.)
The meshing of the worm and the apparatus is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and high temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, temperature), the worm and gear are constructed with dissimilar metals – for instance, the worm could be made of hardened steel and the gear made of bronze or aluminum.
Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The utilization of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. In addition, the utilization of a softer materials for the apparatus means that it can absorb shock loads, like those skilled in large equipment or crushing machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as velocity reducers in low- to medium-velocity applications. And, because their reduction ratio is based on the amount of gear teeth by itself, they are smaller sized than other styles of 
gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes 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 acceleration reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest type of gearing.
Because the efficiency of a worm gear drive depends on the business lead angle and amount of starts on the worm – and because increased efficiency is worm wheel gearbox always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears used together will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Day time Shipment Program for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power tranny 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 decreasing ratios.
With some ratios, there is level of resistance to back driving.
Available 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 can be relatively simple. However, there is a low transmission effectiveness problem if you don’t know the how to choose the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you ought to know:
1) Helix angle. The worm equipment drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears is more efficient than single thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To select a brand lubricating oil is an essential factor to improve worm gearbox effectiveness. As the correct lubrication can reduce worm equipment action friction and heat.
3) Material selection and Gear Production Technology. For worm shaft, the material should be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm the teeth is decreased. In worm manufacturing, to use the specific machine for gear cutting and tooth grinding of worms also can increase worm gearbox effectiveness.
From a huge transmission gearbox capacity to a straight small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely suits your application requirements.
Worm Gear Container Assembly：
1) You can complete the set up in six different ways.
2) The installation should be solid and reliable.
3) Be sure to verify the connection between the electric motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual set up.
By using the most advanced science and drive technology, we have developed several unique “square package” 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 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 result or a cover for the brief shaft end are elective as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are as a result maintenancefree. They are seen as a high effectiveness and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Program of worm gears, which is similar to a typical spur and the worm, which is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have got reductions of 20:1, and also up to 300:1 or greater.
Standard gearing includes the initial capability which various other gearing components don’t 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 reason behind this inability to rotate the gear-worm?
The angle isn’t deep enough on the worm, so when the gear attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep the zone stuck constantly in place.
Committed to excellence, our employees possess the most important priority satisfying your equipment building needs and item improvement.
Also, we consider pride inside our equipment; few manufacturers have the gear to engineer steel parts as precise as we do. Also fewer manufacturing companies have the machining gear to check the tolerances we can hold.
Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow us to achieve the most challenging task requirements. The combination of robust components, advanced manufacturer technologies, reliability and our commitment to customer satisfaction makes us a top provider in advanced gearing and shafting products.
Our gear manufacturing places have over two decades of worm gear style knowledge, gained through many tasks that included varied sizes of customized worm gears to print requirements.