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-driving the gearmotor so a posture can be held even when power isn’t applied. The precision surface 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Regular 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-acceleration applications that require high precision and torque.

Motor RPM required = 1 / (minutes 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 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 best degree of standard in production of worm gears in gearboxes. Right from the look of gearbox, materials selection to production 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
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 available in stock or can be made on brief 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 constructed of Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes have liberal ribbing for increasing high temperature dissipation region, streamlined sump to carry more oil and lover 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 conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Equipment case conforms to C.I. Quality 20, IS210.

High reduction gear
Worm and wheel gear pairings provide large quickness decrease ratios with only 1 gear pairing in a more compact space when compared with other types of gears. We offer up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some disadvantages will be the general low efficiency and the actual fact that they generate heat.

Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous structure has not been cut.

2) The surface hardness after frosty 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) Cold rolled worms are suitable for miniature gear 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 this cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cold Rolled Worms provide a smooth procedure and long term durability.

Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the apparatus is analogous to a spur equipment. The worm is normally the traveling component, with the worm’s thread advancing the teeth of the gear.

Like a ball screw, the worm in a worm gear may have a single start or multiple starts – meaning that there are multiple worm wheel gearbox threads, or helicies, on the worm. For a single-start worm, each complete turn (360 degrees) of the worm increases the equipment 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 the gear reduction can be a function of the diameters of both 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 warmth, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, heat), the worm and gear are made of dissimilar metals – for instance, the worm may be made of hardened steel and the gear made of bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The use 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. Furthermore, the use of a softer material for the apparatus means that it could absorb shock loads, like those experienced in weighty equipment or crushing machines.

The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as rate reducers in low- to medium-speed applications. And, because their reduction ratio is based on the number of gear teeth by itself, 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 a highly effective answer for power transmitting applications requiring high-ratio quickness reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.

Because the performance of a worm gear drive depends on the business lead angle and amount of begins on the worm – and because increased performance is always a goal, the ratio should be kept only possible. To run correctly, worms and worm gears utilized 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 Day time Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing 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 if you don’t understand 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 equipment drive efficiency mostly depend on the helix position of the worm. Usually, multiple thread worms and gears is definitely more efficient than single thread worms. Proper thread worms can increase effectiveness.

2) Lubrication. To select a brand lubricating essential oil is an essential factor to boost worm gearbox efficiency. As the correct lubrication can reduce worm gear action friction and heat.

3) Material 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 tooth is reduced. In worm manufacturing, to use the specific machine for gear reducing and tooth grinding of worms also can increase worm gearbox effectiveness.

From a big transmission gearbox capacity to a straight small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely matches your application requirements.

Worm Gear Container Assembly:
1) You may complete the set up in six various ways.

2) The installation must be solid and reliable.

3) Ensure that you verify the connection between your electric motor and the worm equipment reducer.

4) You must make use of flexible cables and wiring for a manual installation.

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 design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox can be a standard worm gearbox with a bronze worm gear 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 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 short shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are for that reason 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 suitable for positioning applications.

Worm Gear applications
Application of worm gears, which is similar to a standard spur and the worm, which 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 actually up to 300:1 or greater.

Typical gearing includes the initial capability which 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 isn’t 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.

Committed to excellence, our employees have 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 metal parts as precise as we do. Even fewer manufacturing companies have the machining products to check the tolerances we are able to hold.

Being a gearing manufacturer to Automotive level companies, with a diverse supply of material types, allow us to achieve the most challenging project requirements. The combination of robust components, advanced manufacturer technologies, reliability and our dedication to client satisfaction makes us a high supplier in advanced gearing and shafting items.

Our gear manufacturing places have over twenty years of worm gear style expertise, gained through many tasks that included varied sizes of custom made worm gears to print requirements.