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-generating the gearmotor so a posture can be kept even when power is not applied. The precision surface 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is certainly easily installed to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (motor sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-swiftness 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 needed to achieve 10 minutes per rotation (at max speed)
Dimensions 3.43″ x 1.93″
Item 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 regular and customised worm gearbox and worm gear motor.

Ever-Power maintains the best degree of standard in manufacturing of worm gears in gearboxes. From the look of gearbox, materials selection to manufacturing practice of worm gear 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 Versions 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 having cast iron gear 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 temperature dissipation region, streamlined sump for carrying more oil and lover of ample size which works well in both side 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 according to BS 1400, While Equipment case conforms to C.I. Grade 20, IS210.

High reduction gear
Worm and wheel gear pairings provide large rate reduction ratios with only 1 gear pairing in a far more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks are the general low effectiveness and the fact that they generate warmth.

Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained 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 cold 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) Frosty rolled worms are ideal for miniature gear 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 this cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Cool Rolled Worms give a smooth procedure and long term durability.

Worm gears are made of a worm and a gear (sometimes known 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 apparatus is certainly analogous to a spur gear. The worm is typically the driving component, with the worm’s thread advancing one’s teeth of the gear.

Just like a ball screw, the worm in a worm gear may have a single start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full change (360 degrees) of the worm advances 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 amount of teeth on the apparatus, divided by the amount of starts on the worm. (That is different from almost every 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 efficiency 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 of dissimilar metals – for example, the worm may be made of hardened metal and the gear made of bronze or aluminum.

Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and gear also plays a part in quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer materials for the gear means that it could absorb shock loads, like those experienced 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 can also be used as acceleration reducers in low- to medium-quickness applications. And, because their reduction ratio is based on the number of gear teeth only, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually 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 acceleration reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, worm wheel gearbox quietest kind of gearing.

Because the efficiency of a worm gear drive depends on the lead angle and amount of starts on the worm – and because increased efficiency is always a goal, the ratio ought to be kept as low as possible. To run properly, worms and worm gears utilized together will need to have the same diametral pitch and threads.

Our complete line of worms and worm gears can be ordered through the EP Gear Guaranteed Same Day Shipment Program for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer 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 reducing ratios.
With some ratios, there is resistance to back driving.
Offered 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. However, there is a low transmission efficiency problem in the event that you don’t know the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you ought to know:

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

2) Lubrication. To select a brand lubricating essential oil can be an essential factor to improve worm gearbox effectiveness. As the correct lubrication can reduce worm equipment action friction and temperature.

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

From a sizable transmission gearbox power to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely suits your application requirements.

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

2) The installation should be solid and reliable.

3) Ensure that you examine the connection between the motor and the worm equipment reducer.

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

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 beautiful 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 is definitely 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 speed variation UDL series. Their framework 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 output or a cover for the short shaft end are optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are consequently maintenancefree. They are characterized by high performance and self-locking.

Please note:
Due to 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 typical spur and the worm, which really is a cylindrical equipment that resembles a screw, permits smaller gearboxes or planetary drives, whilst 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.

Normal gearing includes the unique capability which additional gearing components do not have – the “worm” can effortlessly spin the part, however the “gears” cannot 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 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 manufacturers have the gear to engineer steel parts as exact as we do. Even fewer manufacturing businesses have the machining gear to check the tolerances we are able to hold.

Being a gearing manufacturer to Automotive level businesses, with a diverse supply of material types, allow all of us to achieve the most challenging task requirements. The mixture of robust components, advanced manufacturer technologies, reliability and our commitment to customer satisfaction makes us a high supplier in advanced gearing and shafting products.

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