This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that require extremely slow and smooth rotational motion. The worm-drive design not only minimizes backlash but also eliminates back-driving the gearmotor so a posture can be kept even when power isn’t applied. The precision floor 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 offers a rigid framework without adding unnecessary weight and is definitely easily installed to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-velocity 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 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 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 look of gearbox, material selection to manufacturing practice of worm gear 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
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 could be made on short 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 equipment boxes possess liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and lover of ample size which works well in both part of rotation.
Design Standards:
Wherever applicable, British as well as 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. Quality 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large velocity decrease ratios with only one gear pairing in a more compact space when compared with other types of gears. We offer up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings is the low level noise they produce. Some disadvantages are the general low efficiency and the fact that they generate temperature.
Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous framework has not been cut.
2) The top hardness after cold rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the original material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Chilly rolled worms are ideal for miniature gear applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or worm wheel gearbox various other soft materials.
4) Because of the implementation of this cold rolling method, the helicoid surface area of 
EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms give a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to one another. The worm is definitely analogous to a screw with a V-type thread, and the gear is definitely analogous to a spur equipment. The worm is typically the driving component, with the worm’s thread advancing the teeth of the gear.
Such as 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 change (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the gear reduction equals the amount of teeth on the apparatus, divided by the number of begins on the worm. (That is different from almost every 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 apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and warmth, which limits the efficiency 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 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 extremely quiet operation. (The usage of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. In addition, the use of a softer material for the gear means that it could absorb shock loads, like those experienced in weighty equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as swiftness reducers in low- to medium-swiftness applications. And, because their decrease ratio is founded on the amount of gear teeth only, they are smaller sized than other types of gears. Like fine-pitch 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 a highly effective answer for power tranny applications requiring high-ratio speed reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the effectiveness of a worm equipment drive depends upon the lead angle and quantity 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 utilized together must have the same diametral pitch and threads.
Our complete type of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest kind of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. Nevertheless, there exists a low transmission efficiency problem if you don’t understand the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you should know:
1) Helix position. The worm gear drive efficiency mostly depend on the helix angle of the worm. Usually, multiple thread worms and gears can be more efficient than one thread worms. Proper thread worms can increase performance.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to boost worm gearbox efficiency. As the proper lubrication can decrease worm gear action friction and temperature.
3) Materials selection and Gear Manufacturing 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 production, to use the specialized machine for gear slicing and tooth grinding of worms can also increase worm gearbox efficiency.
From a big transmission gearbox capacity 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 various ways.
2) The installation must be solid and reliable.
3) Ensure that you examine the connection between the engine and the worm gear reducer.
4) You must use flexible cables and wiring for a manual installation.
With the help of the innovative science and drive technology, we’ve developed several unique “square box” 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 typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less velocity variation UDL series. Their framework 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 dual shaft for double-sided output or a cover for the short shaft end are optionally available as accessories. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are therefore maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.
Worm Gear applications
Application of worm gears, which is similar to a standard 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 is common for worm gears to possess reductions of 20:1, and even up to 300:1 or greater.
Typical gearing includes the unique capability which additional 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 real reason for 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 carefully the zone stuck in position.
Focused on excellence, our employees have the most crucial priority satisfying your gear building needs and product improvement.
Also, we take pride in our equipment; few manufacturers have the equipment to engineer metallic parts as specific as we do. Actually fewer manufacturing businesses have the machining devices to check on the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level companies, with a diverse way to obtain material types, allow all of us to attain the most challenging project requirements. The mixture of robust components, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a high supplier in advanced gearing and shafting items.
Our gear manufacturing places have over twenty years of worm gear design experience, gained through many tasks that included varied sizes of custom worm gears to print requirements.