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 only minimizes backlash but also eliminates back-traveling 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 aid lots from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid framework without adding unnecessary weight and can be easily mounted 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-rate applications that require high precision and torque.

Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need 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 selection of standard, non standard and customised worm gearbox and worm gear motor.

Ever-Power maintains the best level of standard in manufacturing of worm gears in gearboxes. From the design of gearbox, materials selection to manufacturing practice of worm gear box and gear motor.

worm wheel gearbox 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 could be made on brief notice by customer.
Worm gearboxes are experiencing 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 possess liberal ribbing for increasing high temperature dissipation region, streamlined sump for carrying more oil and fan 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 conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Equipment case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel equipment pairings provide large swiftness reduction ratios with only one equipment pairing in a more compact space in comparison to other types of gears. You can expect 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.

Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous structure is not cut.

2) The top hardness after chilly rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial materials, and the hardness of the helicoid surface 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) Due to the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms provide a smooth procedure and long term durability.

Worm gears are made of a worm and a equipment (sometimes referred to as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is 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.

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 increases the gear by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the number of teeth on the apparatus, divided by the amount of begins on the worm. (That is different from almost every other types of gears, where the gear reduction is usually 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 actions causes friction and warmth, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, temperature), the worm and equipment are made of dissimilar metals – for example, the worm may 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 utilization of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. In addition, the use of a softer materials for the gear means that it could absorb shock loads, like those experienced in heavy equipment or crushing devices.

The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as rate reducers in low- to medium-swiftness applications. And, because their decrease ratio is founded on the amount of gear teeth only, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are typically 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 rate reduction in a restricted space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind of gearing.

Because the efficiency of a worm equipment drive depends on the lead angle and number of starts on the worm – and because increased effectiveness is always an objective, the ratio should be kept as low as possible. To run properly, worms and worm gears used together must have the same diametral pitch and threads.

Our complete type of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by decreasing 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 can be relatively simple. Nevertheless, there exists a low transmission efficiency 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 position. The worm equipment drive efficiency mostly depend on the helix angle of the worm. Generally, multiple thread worms and gears is certainly 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 boost worm gearbox effectiveness. As the correct lubrication can decrease worm equipment action friction and heat.

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 tooth is reduced. In worm manufacturing, to use the specialized machine for gear slicing 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 may complete the installation in six different ways.

2) The installation should be solid and reliable.

3) Be sure to 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’ve 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, right angle gearbox. An NMRV series gearbox is usually a standard 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 rate variation UDL series. Their structure 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 short shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are as a result maintenancefree. They are characterized by high effectiveness and self-locking.

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

Worm Gear applications
Application of worm gears, which is comparable to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, allows for smaller gearboxes or planetary drives, while retaining torque or power. It is common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.

Common gearing includes the unique capability which additional gearing components do not 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 reason behind 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 in position.

Committed to excellence, our employees possess the most crucial priority satisfying your gear building needs and product improvement.

Also, we consider pride inside our equipment; few producers have the equipment to engineer metal parts as precise as we do. Even fewer manufacturing companies have the machining equipment to check the tolerances we can hold.

Being a gearing producer 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 commitment to client satisfaction makes us a top supplier in advanced gearing and shafting items.

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