worm wheel gearbox

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 merely minimizes backlash but also eliminates back-traveling 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 support a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily mounted to any flat 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-swiftness applications that require 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″
Product Weight 5.9oz (0.375 lbs)
Output Shaft Diameter 3/8″ (0.375″)
Motor Size Compatibility Regular Spur Gear Motors

Ever-Power offers you the widest range of standard, non standard and customised worm gearbox and worm gear motor.

Ever-Power maintains the best degree of standard in production of worm gears in gearboxes. From the look of gearbox, materials selection to manufacturing practice of worm gear box and gear 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 often obtainable in stock or can be made on short notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes have liberal ribbing for increasing high temperature dissipation area, streamlined sump to carry more oil and enthusiast of ample size which is effective in both part of rotation.

Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts conform to 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 gear pairings provide large quickness reduction ratios with only one gear pairing in a more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings is the low level noise they produce. Some disadvantages will be the general low efficiency and the fact that they generate temperature.

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 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Chilly rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.

4) Because of the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away 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 gear (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is definitely analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is typically 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 threads, or helicies, on the worm. For a single-start worm, each complete switch (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the number of starts 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 actions causes friction and temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, warmth), 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 decreases efficiency, it provides extremely quiet operation. (The utilization of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. Furthermore, the utilization of a softer material for the apparatus means that it could absorb shock loads, like those skilled 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 can also be used as acceleration reducers in low- to medium-velocity applications. And, because their decrease ratio is based on the number of gear teeth by itself, they are smaller sized than other styles 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 transmission applications requiring high-ratio velocity reduction in a limited space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.

Because the efficiency of a worm gear drive depends on the business lead angle and number of begins on the worm – and because increased performance is always a goal, the ratio should be kept as low as 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 Equipment 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.
Available 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 is a low transmission efficiency problem if you don’t understand the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you need to know:

1) Helix angle. The worm equipment drive efficiency mostly rely 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 effectiveness.

2) Lubrication. To select a brand lubricating essential oil is an essential factor to improve worm gearbox effectiveness. 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 the teeth is reduced. In worm manufacturing, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox effectiveness.

From a big transmission gearbox capacity to an even small worm gearbox load, you can choose one from a wide range of worm reducer that precisely fits your application requirements.

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

2) The installation should be solid and reliable.

3) Ensure that you verify the connection between the motor and the worm gear reducer.

4) You must use flexible cables and wiring for a manual set up.

By using the innovative science and drive technology, we have developed several unique “square box” designed from high-quality aluminium die casting with a beautiful appearance. The modular worm gearbox design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, right angle gearbox. An NMRV series gearbox is a standard 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 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 elective as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are for that reason maintenancefree. They are characterized by high efficiency and self-locking.

Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.

Worm Gear applications
Application of worm gears, which is similar to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, worm wheel gearbox 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.

Typical gearing includes the unique capability which additional 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 product improvement.

Also, we take pride inside our equipment; few manufacturers have the equipment to engineer metallic parts as precise as we do. Even fewer manufacturing companies have the machining tools to check the tolerances we are able to hold.

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

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

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