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-traveling the gearmotor so a posture can be held even when power is not applied. The precision floor 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is certainly easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (motor sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-velocity applications that want high precision and torque.
Motor RPM required = 1 / (a few minutes per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (at 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 Regular 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 degree of standard in production of worm gears in gearboxes. Right from the design of gearbox, material 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
Middle 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 usually obtainable in stock or could 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 from Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing heat dissipation area, streamlined sump to carry more oil and lover of ample size which is effective in both aspect 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 Equipment case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large acceleration decrease ratios with only one equipment pairing in a more compact space in comparison to other styles of gears. We offer up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings is the low level sound they produce. Some disadvantages will be the general low performance and the actual fact that they generate high temperature.
Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by function hardening when the cold 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 frosty rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the original material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Chilly rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels made out of POM or various other soft materials.
4) Because of the implementation of the 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 known as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the gear is definitely analogous to a spur gear. The worm is normally the traveling 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 – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full turn (360 degrees) of the worm increases the gear by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the apparatus, divided by the amount of begins on the worm. (That is different from most other types of gears, where in fact the gear reduction is certainly a function of the diameters of both components.)
The meshing of the worm and the apparatus is a mixture 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 gear are constructed with dissimilar metals – for instance, the worm could be made of hardened metal and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears suitable for use where sound worm wheel gearbox should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in weighty equipment or crushing devices.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as swiftness reducers in low- to medium-rate applications. And, because their decrease ratio is based on the number of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them ideal 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 rate 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 lead angle and quantity of begins on the worm – and because increased performance is always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment Program for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest type of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is level of resistance to back driving.
Obtainable 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 can be relatively simple. However, there exists a low transmission efficiency problem in the event that you don’t understand the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you need to know:
1) Helix position. The worm gear drive efficiency mostly rely on the helix position of the worm. Generally, multiple thread worms and gears is definitely more efficient than single thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To choose a brand lubricating oil is an essential factor to boost worm gearbox effectiveness. As the 
correct lubrication can reduce worm equipment action friction and high temperature.
3) Materials selection and Gear Production Technology. For worm shaft, the material ought to be hardened steel. The worm gear material should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is decreased. In worm production, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox effectiveness.
From a sizable 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 Box Assembly：
1) You may complete the set up in six various ways.
2) The installation must be solid and reliable.
3) Make sure to check the connection between the motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual set up.
With the help of the innovative science and drive technology, we’ve developed several unique “square container” 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 definitely a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less quickness 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 output or a cover for the short shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are as a result maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
App of worm gears, which is similar to a standard spur and the worm, which is a cylindrical equipment 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 actually up to 300:1 or greater.
Regular gearing includes the initial capability which various other gearing components don’t 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 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 carefully the zone stuck in position.
Focused on excellence, our employees have the most crucial priority satisfying your equipment building needs and item improvement.
Also, we consider pride in our equipment; few manufacturers have the equipment to engineer metallic parts as exact as we do. Even fewer manufacturing companies have the machining equipment to check on the tolerances we are able to hold.
Being a gearing producer 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 systems, reliability and our dedication to customer satisfaction makes us a high supplier in advanced gearing and shafting products.
Our gear manufacturing places have over two decades of worm gear design experience, gained through many projects that included varied sizes of custom made worm gears to print requirements.