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 isn't applied. The precision surface 3/8” stainless steel output shaft is supported 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 usually easily mounted to any flat work surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (motor marketed separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-rate applications that want high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (ten 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 Regular 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 best level of standard in production of worm gears in gearboxes. Right from the design 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
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 often obtainable in stock or can be made on brief 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 of Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing heat dissipation region, streamlined sump for carrying more oil and lover of ample size which works well in both part of rotation.
Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large quickness decrease ratios with only one gear pairing in a far more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings may be the low level noise they produce. Some disadvantages are the general low efficiency and the actual fact that they generate high temperature.
Benefit 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 cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous structure is not cut.
2) The top hardness after frosty 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 could be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Due to the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Cold Rolled Worms provide 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, nonintersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the gear is certainly analogous to a spur gear. The worm is normally the driving component, with the worm's thread advancing the teeth of the gear.
Like a ball screw, the worm in a worm gear may have an individual start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full turn (360 degrees) of the worm advances 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 apparatus, divided by the number 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 both 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 action causes friction and high temperature, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, high temperature), the worm and equipment are made of dissimilar metals – for instance, the worm may be made of hardened steel and the gear made of bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the apparatus means that it can absorb shock loads, like those skilled in heavy equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as quickness reducers in low- to medium-velocity applications. And, because their reduction ratio is founded on the number of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, which makes them perfect for hoisting and lifting applications.
EP Gear's worms and worm gears provide a highly effective answer for power transmitting applications requiring high-ratio speed reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the performance of a worm equipment drive depends on the lead angle and number 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 correctly, worms and worm gears used 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 System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest type 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, double 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 if you don't know the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you should 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 one thread worms. Proper thread worms can increase performance.
2) Lubrication. To select a brand lubricating oil is an essential factor to improve worm gearbox performance. As the correct lubrication can reduce worm gear action friction and heat.
3) Materials selection and Gear Production Technology. For worm shaft, the material should be hardened metal. The worm gear material ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm tooth is decreased. In worm production, to use the specific machine for gear slicing and tooth grinding of worms also can increase worm gearbox efficiency.
From a big transmission gearbox capacity to an even small worm gearbox load, you can choose one from a wide range of worm reducer that precisely suits your application requirements.
Worm Gear Package Assembly：
1) You may complete the installation in six various ways.
2) The installation must be solid and reliable.
3) Make sure to verify the connection between the engine and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual installation.
By using the innovative 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 a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line consists of four universal series (R/S/K/F) and a step-less velocity 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 elective as components. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are for that reason maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears aren't suitable for positioning applications.
Worm Gear applications
App of worm gears, which is similar to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have reductions of 20:1, and even up to 300:1 or greater.
Typical gearing includes the initial capability which various other gearing components don't 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 constantly in place.
Committed to excellence, our employees possess the most crucial priority satisfying your equipment building needs and item improvement.
Also, we take pride inside our equipment; few manufacturers have the equipment to engineer steel parts as specific as we do. Even fewer manufacturing businesses have the machining devices to check the tolerances we can hold.
Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow us to attain the most challenging project requirements. The combination of robust components, advanced manufacturer technologies, reliability and our commitment to customer satisfaction makes us a 
high supplier in advanced gearing and shafting items.
Our gear manufacturing places have over two decades of worm gear design knowledge, gained through many projects that included varied sizes of worm wheel gearbox custom made worm gears to print requirements.