This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that want extremely slow and smooth rotational motion. The worm-drive worm wheel gearbox design not merely minimizes backlash but also eliminates back-driving the gearmotor so a posture can be kept 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 light weight aluminum structure offers a rigid framework without adding unnecessary weight and is certainly easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will work with this gearbox (motor sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal 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 / (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 Standard Spur Gear Motors
Ever-Power gives you the widest selection 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 design of gearbox, materials selection to manufacturing practice of worm equipment 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
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 usually available in stock or can be made on short notice by customer.
Worm gearboxes are experiencing cast iron gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is made from Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing heat dissipation area, streamlined sump to carry more oil and lover of ample size which works well 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 comply with phosphorous-bronze as per BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large swiftness reduction ratios with only one gear pairing in a more compact space in comparison to other styles of gears. We offer up to a maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings is the low level noise they produce. Some drawbacks are the general low performance and the fact that they generate high temperature.
Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous structure is not cut.
2) The surface hardness after cold 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) Chilly rolled worms are ideal for miniature gear applications since this could be rotated smoothly without damaging the worm wheels made out of POM or additional 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 Frosty 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, non-intersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is typically the driving component, with the worm’s thread advancing the teeth of the gear.
Just like a ball screw, the worm in a worm gear might have an individual 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 advances the equipment 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 amount of teeth on the gear, 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 is definitely a function of the diameters of both 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 therefore, warmth), the worm and equipment are made of dissimilar metals – for example, the worm could be made of hardened steel and the gear manufactured from bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The usage 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 in elevators. Furthermore, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in large 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 used as quickness reducers in low- to medium-velocity applications. And, because their decrease ratio is founded on the number of gear teeth only, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, making 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 acceleration reduction in a limited space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends upon the lead angle and number of begins 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 will need to have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Time Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest type of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing 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 if you don’t understand the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you ought to know:
1) Helix position. The worm gear drive efficiency mostly rely on the helix position of the worm. Usually, multiple thread worms and gears can be more efficient than solitary thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To select a brand lubricating oil is an essential factor to improve worm gearbox efficiency. As the correct lubrication can decrease worm equipment action friction and temperature.
3) Materials selection and Gear Production Technology. For worm shaft, the material should be hardened steel. The worm gear material should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is decreased. In worm manufacturing, to use the specialized machine for gear cutting and tooth grinding of worms also can increase worm gearbox efficiency.
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 Container Assembly：
1) You may complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Make sure to verify the connection between the electric motor and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual set up.
With the help of 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 design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox is definitely a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less swiftness variation UDL series. Their structure 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 elective as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are as a result maintenancefree. They are characterized by high effectiveness and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
App of worm gears, which is similar to a standard spur and the worm, which really is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, while retaining torque or power. It is common for worm gears to possess reductions of 20:1, and actually up to 300:1 or greater.
Usual gearing includes the unique capability which various other 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 real reason for 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 constantly in place.
Committed to excellence, our employees possess the most important priority satisfying your gear building needs and item improvement.
Also, we consider pride inside our equipment; few manufacturers have the gear to engineer metallic parts as specific as we do. Even fewer manufacturing businesses have the machining gear 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 materials, advanced manufacturer systems, reliability and our commitment to client satisfaction makes us a high provider in advanced gearing and shafting products.
Our gear manufacturing locations have over two decades of worm gear style experience, gained through many tasks that included varied sizes of custom worm gears to print requirements.