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 held even when power is not applied. The precision floor 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is definitely easily mounted to any flat surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (electric 
motor marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect 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 / (ten minutes per rotation / 30) = 3 RPM motor had a need to achieve 10 minutes per rotation (in 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 highest degree of standard in manufacturing of worm gears in gearboxes. Right from the look of gearbox, material selection to production practice of worm gear 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
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 can be made on brief notice by customer.
Worm gearboxes are having cast iron worm wheel gearbox equipment 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 have liberal ribbing for increasing temperature dissipation region, streamlined sump for carrying more oil and fan of ample size which is effective in both aspect of rotation.
Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large rate decrease ratios with only 1 equipment pairing in a far more compact space in comparison to other styles of gears. You can expect up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings is the low level sound they produce. Some drawbacks will be the general low efficiency and the actual fact that they generate warmth.
Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by function hardening when the frosty 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 cool rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cold rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Because of the implementation of this cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cool Rolled Worms provide a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur gear. The worm is normally the generating component, with the worm’s thread advancing one’s teeth of the gear.
Like a ball screw, the worm in a worm gear may have a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full convert (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-start worm, the gear reduction equals the number of teeth on the gear, divided by the amount of starts on the worm. (That is different from most other types of gears, where the gear reduction is a function of the diameters of the two components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and temperature, which limits the efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, temperature), the worm and gear are constructed with dissimilar metals – for instance, 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 utilization of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. In addition, the use of a softer materials for the apparatus means that it could absorb shock loads, like those experienced in heavy equipment or crushing devices.
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 acceleration reducers in low- to medium-quickness applications. And, because their reduction ratio is founded on the number of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch lead screws, worm gears are typically self-locking, which makes them perfect for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmission applications requiring high-ratio velocity reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest type of gearing.
Because the effectiveness of a worm equipment drive depends on the business lead angle and amount of starts on the worm – and because increased effectiveness is always an objective, the ratio should be kept as low as possible. To run correctly, 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 time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest form of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is 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. Nevertheless, there exists a low transmission efficiency problem in the event that you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you need 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 single thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To select a brand lubricating essential oil can be an essential factor to boost 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 ought to be hardened metal. The worm gear materials ought to be aluminium bronze. By reducing the worm gear hardness, the friction on the worm tooth is reduced. In worm manufacturing, to use the specific machine for gear slicing and tooth grinding of worms also can increase worm gearbox effectiveness.
From a huge transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely matches your application requirements.
Worm Gear Package Assembly：
1) You can complete the set up in six different ways.
2) The installation must be solid and reliable.
3) Ensure that you check the connection between your motor and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual set up.
By using the innovative science and drive technology, we have developed several unique “square container” 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, right angle gearbox. An NMRV series gearbox is 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 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 dual shaft for double-sided result or a cover for the short shaft end are optionally available as components. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are consequently maintenancefree. They are seen as a high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Program of worm gears, which is comparable to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, permits 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 also up to 300:1 or greater.
Common gearing includes the initial 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 reason behind this inability to rotate the gear-worm?
The angle isn’t 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.
Focused on excellence, our employees possess the most crucial priority satisfying your equipment building needs and product improvement.
Also, we take pride inside our equipment; few manufacturers have the gear to engineer metal parts as exact as we do. Also fewer manufacturing companies have the machining apparatus to check on the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level companies, with a diverse supply of material types, allow us to achieve the most challenging task requirements. The combination of robust components, advanced manufacturer technology, reliability and our dedication to customer satisfaction makes us a top provider in advanced gearing and shafting products.
Our gear manufacturing places have over twenty years of worm gear style expertise, gained through many projects that included varied sizes of custom made worm gears to print requirements.