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 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 aid a load from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (motor marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect 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 / (ten minutes per rotation / 30) = 3 RPM motor needed 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 offers 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 manufacturing of worm gears in gearboxes. From the look of gearbox, material selection to production practice of worm equipment box and gear 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 can be made on short notice by customer.
Worm gearboxes are having 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 equipment boxes have liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and enthusiast of ample size which is effective 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. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large velocity decrease ratios with only 1 equipment pairing in a far more compact space when compared with other types of gears. We offer up to a maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings is the low level sound they produce. Some disadvantages are the general low effectiveness and the fact that they generate temperature.
Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous structure has not been cut.
2) The top hardness after frosty rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the original 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 can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Cool Rolled Worms provide 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 can be analogous to a screw with a V-type thread, and the apparatus is definitely 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 increases the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the gear, divided by the amount of begins on the worm. (That is different from almost every other types of gears, where the gear reduction is definitely a function of the diameters of the two components.)
The meshing of the worm and the apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, high temperature), the worm and equipment are constructed with dissimilar metals – for example, the worm may be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears suitable for use where sound should be minimized, such as for example in elevators. Furthermore, the usage 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 capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as speed reducers in low- to medium-velocity applications. And, because their decrease ratio is founded on the number of gear teeth alone, they are smaller sized than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes them well suited 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 swiftness reduction in a restricted space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends upon the business lead angle and amount of starts on the worm – and because increased performance is always a goal, the ratio should be kept only possible. To run correctly, worms and worm gears used 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 Time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears provide smoothest, quietest form of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is level of resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. However, there is a low transmission efficiency problem in the event that you don’t know 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 gear drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears is usually more efficient than solitary thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to boost worm gearbox efficiency. As the proper lubrication can reduce worm gear action friction and heat.
3) Materials selection and Gear Production Technology. For worm shaft, the material ought to be hardened metal. The worm gear material ought to be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is reduced. In worm manufacturing, to use the specific machine for gear cutting and tooth grinding of worms can also increase worm gearbox effectiveness.
From a big transmission gearbox power to an even small worm gearbox load, you can choose one from an array of worm reducer that precisely fits your application requirements.
Worm Gear Package Assembly：
1) You may complete the installation in six different ways.
2) The installation should be solid and reliable.
3) Ensure that you check the connection between your electric motor and the worm gear reducer.
4) You must make use of flexible cables and wiring for a manual installation.
By using the innovative science and drive technology, we have developed several unique “square box” designed from high-quality aluminium die casting with a beautiful worm wheel gearbox 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 usually a typical 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 swiftness variation UDL series. Their framework 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 brief shaft end are elective as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are therefore 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 suitable for positioning applications.
Worm Gear applications
Software of worm gears, which is similar to a standard spur and the worm, which really is a cylindrical gear 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 reductions of 20:1, and even up to 300:1 or greater.
Standard gearing includes the unique capability which additional gearing components do not have – the “worm” can effortlessly spin the part, however the “gears” are not able to 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 constantly in place.
Committed to excellence, our employees have the most crucial priority satisfying your equipment building needs and product improvement.
Also, we consider pride in our equipment; few manufacturers have the gear to engineer steel parts as specific as we do. Actually fewer manufacturing companies have the machining products to check the tolerances we can hold.
Being a gearing producer to Automotive level companies, with a diverse supply of material types, allow us to attain the most challenging task requirements. The combination of robust components, advanced manufacturer technologies, reliability and our commitment to client satisfaction makes us a high supplier in advanced gearing and shafting items.
Our gear manufacturing locations have over two decades of worm gear style experience, gained through many projects that included varied sizes of custom made worm gears to print requirements.