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-driving the gearmotor so a position can be kept 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 lots from any orientation. The ¼” ABS plastic and aluminium structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (electric motor offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-quickness applications that require high precision and torque.
Motor RPM required = 1 / (a few minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need to achieve 10 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 offers 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, material selection to manufacturing practice of worm equipment 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 Models 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 short notice by customer.
Worm gearboxes are experiencing cast iron equipment case, worm shaft is of Alloy Steel, 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 for carrying more oil and fan of ample size which is effective 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 swiftness reduction ratios with only 1 equipment pairing in a far more compact space when compared with other styles of gears. You can expect 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 fact that they generate warmth.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the chilly 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 surface hardness after chilly rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cool rolled worms are ideal for miniature gear applications since this can 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 area of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Frosty Rolled Worms give a smooth procedure and long-term durability.
Worm gears are made of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the gear can be analogous to a spur equipment. The worm is normally the traveling component, with the worm’s thread advancing the teeth of the gear.
Just 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 turn (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (That is different from most other types of gears, where in fact the gear reduction is definitely a function of the diameters of both components.)
The worm wheel gearbox 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 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, high temperature), the worm and gear 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 reduces efficiency, it provides very 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 in elevators. In addition, the utilization of a softer material for the apparatus means that it can absorb shock loads, like those experienced in heavy equipment or crushing machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as swiftness reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the number of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them well suited for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmitting applications requiring high-ratio quickness reduction in a limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest type of gearing.
Because the efficiency of a worm gear drive depends upon the lead angle and quantity of starts on the worm – and because increased effectiveness is always an objective, the ratio should be kept only possible. To run properly, worms and worm gears utilized together must 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°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing 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. Nevertheless, there is a low transmission efficiency problem if you don’t know the how to select the worm gearbox. 3 basic indicate choose high worm gear 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 is more efficient than one thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to improve worm gearbox performance. As the proper lubrication can reduce worm gear action friction and warmth.
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 reducing and tooth grinding of worms also can increase worm gearbox effectiveness.
From a large transmission gearbox power to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely fits your application requirements.
Worm Gear Container Assembly：
1) You can complete the set up in six various ways.
2) The installation should be solid and reliable.
3) Ensure that you check the connection between the engine and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual installation.
By using the innovative science and drive technology, we’ve 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, right 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 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 result or a cover for the short shaft end are optionally available as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are for that reason maintenancefree. They are characterized by high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t suitable for positioning applications.
Worm Gear applications
Program of worm gears, which is comparable 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 unique capability which additional gearing components do not 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 important priority satisfying your gear building needs and item improvement.
Also, we take pride inside our equipment; few manufacturers have the equipment to engineer metallic parts as specific as we do. Even fewer manufacturing companies have the machining products to check the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level businesses, with a diverse way to obtain material types, allow us to achieve the most challenging task requirements. The mixture of robust components, advanced manufacturer technology, reliability and our commitment to client satisfaction makes us a high supplier in advanced gearing and shafting items.
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.