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-generating the gearmotor so a position can be kept even when power is not applied. The precision surface 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is certainly easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (worm wheel gearbox engine sold 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 / (mins 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 range of standard, non standard and customised worm gearbox and worm equipment motor.

Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the look of gearbox, materials selection to manufacturing practice of worm equipment box and gear engine.

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 Versions like C.D. 50, 60, 75, 85, 100 mm and Ratio 30/1 or 40/1 are often available in stock or could be made on short notice by customer.
Worm gearboxes are having cast iron equipment 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 have liberal ribbing for increasing warmth dissipation area, streamlined sump for carrying more oil and fan of ample size which works well in both side of rotation.

Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze as per BS 1400, While Gear case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel gear pairings provide large swiftness decrease ratios with only 1 equipment pairing in a more compact space when compared with other styles of gears. We offer up to a maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel gear pairings is the low level noise they produce. Some drawbacks are the general low performance and the actual fact that they generate warmth.

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

2) The top hardness after chilly rolling is increased by 1.2 to at least one 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) Chilly rolled worms are ideal for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.

4) Because of 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 finish. Thus, EP-Precision Frosty 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, non-intersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the gear is definitely 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 an individual start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each complete convert (360 degrees) of the worm advances the equipment by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the apparatus, divided by the amount of starts on the worm. (That is different from most other types of gears, where in fact the gear reduction is a function of the diameters of the two 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 temperature, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, temperature), the worm and equipment are made of dissimilar metals – for instance, 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 use of dissimilar metals for the worm and equipment also plays a part in quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as for example in elevators. In addition, the utilization of a softer material for the apparatus means that it could absorb shock loads, like those skilled in large equipment or crushing devices.

The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as acceleration reducers in low- to medium-acceleration 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 perfect 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 acceleration reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.

Because the efficiency of a worm gear drive depends on the business lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, 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 can be ordered through the EP Gear 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 offer the smoothest, quietest form of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by decreasing 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 to Select High Efficient Worm Gearbox?
The worm gear production process can be relatively simple. However, there is a low transmission efficiency problem if you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you ought 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 is more efficient than one 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 performance. As the proper lubrication can reduce worm equipment action friction and heat.

3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is reduced. In worm production, to use the specialized machine for gear slicing and tooth grinding of worms can also increase worm gearbox efficiency.

From a large transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide range of worm reducer that precisely fits your application requirements.

Worm Gear Package Assembly：
1) You can 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 engine and the worm equipment reducer.

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

By using the most advanced science and drive technology, we’ve developed several unique “square box” designed from high-quality aluminium die casting with a beautiful 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 definitely a standard 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 rate 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 result or a cover for the brief shaft end are elective as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are as a result maintenancefree. They are seen as a high performance and self-locking.

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

Worm Gear applications
Program of worm gears, which is similar to a standard spur and the worm, which really 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 got reductions of 20:1, and actually up to 300:1 or greater.

Usual gearing includes the initial 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 reason behind 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 the zone stuck in position.

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

Also, we consider pride inside our equipment; few producers have the equipment to engineer metallic parts as specific as we do. Actually fewer manufacturing businesses have the machining gear to check the tolerances we are able to hold.

Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow all of us to achieve the most challenging task requirements. The combination of robust components, advanced manufacturer systems, reliability and our commitment to client satisfaction makes us a top supplier in advanced gearing and shafting products.

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