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 only minimizes backlash but also eliminates back-traveling the gearmotor so a posture can be kept even when power isn’t applied. The precision ground 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 aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily installed to any flat surface by utilizing the base 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-speed applications that want high precision and torque.

Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor needed to achieve ten 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 range of standard, non standard and customised worm gearbox and worm gear motor.

Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the look of gearbox, materials selection to production practice of worm equipment 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
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 usually available in stock or can be made on short notice by customer.
Worm gearboxes are experiencing cast iron equipment case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.

Ever-Power worm equipment boxes have liberal ribbing for increasing warmth 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 as well as 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 speed decrease ratios with only 1 equipment pairing in a far more compact space in comparison to other types 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 sound they produce. Some drawbacks are the general low performance and the fact that they generate heat.

Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the worm wheel gearbox helicoid surface has been attained by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of reality that the metallic fibrous framework is not cut.

2) The surface hardness after cold rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the original materials, and the hardness of the helicoid surface increases to around HB240 to 260.

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

4) Due to the implementation of the cold rolling technique, 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 operation and long term durability.

Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the gear can be analogous to a spur gear. The worm is typically the driving component, with the worm’s thread advancing the teeth of the gear.

Such as 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 switch (360 degrees) of the worm increases the equipment by one tooth. So 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 apparatus, divided by the number of begins on the worm. (This is different from most 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 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 performance of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, warmth), the worm and equipment are made from dissimilar metals – for example, the worm could be made of hardened metal and the gear manufactured from bronze or aluminum.

Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and equipment also plays a part in quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in heavy 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 utilized as velocity reducers in low- to medium-velocity applications. And, because their decrease ratio is based on the number of gear teeth only, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are typically self-locking, which makes 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°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the efficiency of a worm equipment drive depends upon the business lead angle and quantity of starts on the worm – and because increased efficiency is always a goal, the ratio should be kept as low as possible. To run properly, 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 Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is resistance to back driving.
Obtainable 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 manufacturing process is also relatively simple. Nevertheless, there is a low transmission performance problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you should know:

1) Helix angle. The worm equipment drive efficiency mostly rely on the helix angle of the worm. Usually, multiple thread worms and gears can be more efficient than one thread worms. Proper thread worms can increase performance.

2) Lubrication. To choose a brand lubricating oil is an essential factor to improve worm gearbox efficiency. As the proper lubrication can reduce worm gear action friction and temperature.

3) Material selection and Gear Manufacturing 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 teeth is decreased. In worm production, to use the specialized machine for gear cutting and tooth grinding of worms can also increase worm gearbox effectiveness.

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 Box Assembly:
1) You can complete the set up in six various ways.

2) The installation should be solid and reliable.

3) Be sure to verify the connection between your electric motor and the worm gear reducer.

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

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 style series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox is certainly a typical worm gearbox with a bronze worm gear 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 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 output 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 therefore maintenancefree. They are seen as a high effectiveness and self-locking.

Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.

Worm Gear applications
Software 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’s quite 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 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 real reason for 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 carefully the zone stuck constantly in place.

Focused on excellence, our employees possess the most important priority satisfying your gear building needs and item improvement.

Also, we take pride in our equipment; few producers have the equipment to engineer metallic parts as precise as we do. Actually fewer manufacturing businesses have the machining tools to check on the tolerances we can hold.

Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow all of us to achieve the most challenging project requirements. The combination of robust materials, advanced manufacturer systems, reliability and our commitment to customer satisfaction makes us a top supplier in advanced gearing and shafting items.

Our gear manufacturing locations have over two decades of worm gear design experience, gained through many projects that included varied sizes of customized worm gears to print requirements.