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 posture can be held even when power is not applied. The precision surface 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 offers a rigid framework without adding unnecessary weight and is definitely easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (motor offered 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 / (mins per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor had a need 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 standard and customised worm gearbox and worm worm wheel gearbox equipment motor.
Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the design of gearbox, materials selection to manufacturing 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
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 often obtainable in stock or could be made on short notice by customer.
Worm gearboxes are having 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 possess liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and enthusiast 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 conform to 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 equipment pairings provide large rate reduction ratios with only one equipment pairing in a far more compact space when compared with other types of gears. We offer up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some drawbacks will be the general low efficiency and the actual fact that they generate temperature.
Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work 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 is not cut.
2) The top hardness after frosty rolling is increased by 1.2 to at least one 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) Chilly rolled worms are suitable for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of POM or various other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Cool Rolled Worms give a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to each other. The worm can be analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing one’s teeth of the gear.
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 switch (360 degrees) of the worm advances the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the number of begins on the worm. (That is different from almost every other types of gears, where in fact the gear reduction is 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 action causes friction and heat, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, heat), the worm and equipment 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 very quiet operation. (The utilization of dissimilar metals for the worm and equipment also plays a part in quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. In addition, the usage of a softer materials for the apparatus means that it can absorb shock loads, like those experienced in weighty equipment or crushing machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as swiftness reducers in low- to medium-speed applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, which makes them well suited 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 speed reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends upon the business lead angle and number of starts 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 used together must have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission needs.
Our worm gears provide smoothest, quietest type of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering 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 to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. However, there is a low transmission effectiveness problem in the event that you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you need to know:
1) Helix position. The worm gear drive efficiency mostly depend on the helix position of the worm. Generally, multiple thread worms and gears can be more efficient than single thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To select a brand lubricating essential oil is an essential factor to boost worm gearbox performance. As the proper lubrication can decrease worm gear action friction and temperature.
3) Materials selection and Gear Production Technology. For worm shaft, the material ought to be hardened steel. The worm gear material should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is reduced. In worm production, to use the specific machine for gear slicing 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 a wide variety of worm reducer that precisely suits your application requirements.
Worm Gear Container Assembly：
1) You can complete the set up in six various ways.
2) The installation should be solid and reliable.
3) Be sure to examine the connection between the motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual installation.
By using the innovative science and drive technology, we’ve developed several unique “square box” designed from high-quality aluminium die casting with a beautiful 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 can be a typical 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 acceleration 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 short shaft end are elective as components. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are consequently maintenancefree. They are characterized by high efficiency and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t suitable for positioning applications.
Worm Gear applications
Software of worm gears, which is similar to a typical 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 is common for worm gears to possess reductions of 20:1, and also up to 300:1 or greater.
Typical gearing includes the initial capability which additional 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 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 possess the most crucial priority satisfying your equipment building needs and item improvement.
Also, we consider pride in our equipment; few producers have the gear to engineer metallic parts as exact as we do. Also fewer manufacturing companies have the machining products to check on the tolerances we can hold.
Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow all of us to attain the most challenging task requirements. The mixture of robust components, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a top supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over two decades of worm gear style expertise, gained through many projects that included varied sizes of customized worm gears to print requirements.