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-generating the gearmotor so a position can be held even when power is not applied. The precision ground 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and aluminum structure offers a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed 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 (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 gives you the widest range of standard, non standard and customised worm gearbox and worm gear motor.

Ever-Power maintains the best level of standard in production of worm gears in gearboxes. From the design of gearbox, materials selection to production 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
Center 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 obtainable in stock or can 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 from Chill Cast Phosphorous Bronze.

Ever-Power worm gear boxes have liberal ribbing for increasing heat dissipation region, streamlined sump to carry more oil and lover of ample size which works well in both side of rotation.

Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels conform to 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 rate decrease ratios with only 1 gear pairing in a more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel gear pairings is the low level sound they produce. Some drawbacks will be the general low efficiency and the fact that they generate heat.

Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work 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 cold rolling is increased by 1.2 to 1 1.3 times when compared with 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 additional soft materials.

4) Due to the implementation of this cold rolling technique, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Frosty Rolled Worms provide a smooth procedure and long term durability.

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

Such as 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 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 apparatus reduction equals the number of teeth on the apparatus, divided by the amount of starts on the worm. (This is different from most other types of gears, where in fact the gear reduction is usually a function of the diameters of the two components.)
The meshing of the worm and the gear is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, warmth), the worm and equipment are made from dissimilar metals – for instance, the worm could 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 utilization of dissimilar metals for the worm and equipment also plays a part in quiet procedure.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. Furthermore, the use of a softer material for the gear means that it can absorb shock loads, like those experienced in heavy equipment or crushing worm wheel gearbox machines.

The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as swiftness reducers in low- to medium-acceleration applications. And, because their reduction ratio is founded on the amount of gear teeth alone, they are more compact than other types 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 an effective answer for power tranny applications requiring high-ratio velocity reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.

Because the performance of a worm equipment drive depends upon the business lead angle and amount of begins on the worm – and because increased effectiveness is always a goal, the ratio ought to 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 type of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Day Shipment System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, dual and quad start configurations

How to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. However, there exists a low transmission effectiveness problem if 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 gear drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears is usually more efficient than single thread worms. Proper thread worms can increase efficiency.

2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to improve worm gearbox efficiency. As the proper lubrication can decrease worm equipment action friction and heat.

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

From a big transmission gearbox capacity 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 various ways.

2) The installation should be solid and reliable.

3) Make sure to verify the connection between your engine and the worm equipment reducer.

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

With the help of the innovative 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 design series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, right 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 consists of four universal series (R/S/K/F) and a step-less quickness 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 short shaft end are optionally available as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are consequently maintenancefree. They are seen as a high performance and self-locking.

Please note:
Due to 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 typical 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’s quite common for worm gears to have got reductions of 20:1, and actually up to 300:1 or greater.

Common gearing includes the unique capability which other gearing components do not have – the “worm” can effortlessly spin the part, but the “gears” cannot 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 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 gear building needs and product improvement.

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

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

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