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 merely minimizes backlash but also eliminates back-traveling the gearmotor so a position can be held 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 offers a rigid framework without adding unnecessary weight and can be easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (engine offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-swiftness applications that want high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (10 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″
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 selection of standard, non regular and customised worm gearbox and worm equipment motor.
Ever-Power maintains the highest degree of standard in production of worm gears in gearboxes. From the look of gearbox, material selection to manufacturing 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
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 can be made on brief notice by customer.
Worm gearboxes are experiencing cast iron equipment case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes have liberal ribbing for increasing warmth dissipation area, streamlined sump for carrying more oil and lover of ample size which works well in both aspect of rotation.
Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Equipment case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large speed reduction 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 our products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some drawbacks will be the general low performance and the fact that they generate heat.
Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous structure has not been cut.
2) The surface hardness after chilly rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial materials, 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 made out of 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 away with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms give a smooth operation and long-term durability.
Worm gears are made of a worm and a equipment (sometimes known as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the apparatus is analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.
Just like a ball screw, the worm in a worm gear might have an individual start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full change (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (This is different from most 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 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, high temperature), the worm and gear are made from dissimilar metals – for example, the worm could be made of hardened steel 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 ideal for use where noise should be minimized, such as in elevators. In addition, the utilization of a softer materials for the gear means that it can absorb shock loads, like those worm wheel gearbox skilled in large equipment or crushing devices.
The primary advantage 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-quickness applications. And, because their reduction ratio is based on the amount of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them perfect 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 right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.
Because the efficiency of a worm equipment drive depends upon the business lead angle and quantity of starts on the worm – and because increased effectiveness is always a goal, the ratio ought to 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 could be ordered through the EP Equipment Guaranteed Same Day time Shipment Plan for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest kind of gearing.
They provide 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.
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 can be relatively simple. Nevertheless, there is a low transmission performance problem if you don’t know the how to select the worm gearbox. 3 basic point to choose high worm equipment efficiency that you ought to know:
1) Helix angle. The worm gear drive efficiency mostly depend 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 performance.
2) Lubrication. To select a brand lubricating oil is an essential factor to improve worm gearbox performance. As the correct lubrication can decrease 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 materials ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is decreased. In worm production, to use the specialized machine for gear slicing and tooth grinding of worms also can increase worm gearbox efficiency.
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 matches your application requirements.
Worm Gear Container Assembly：
1) You can complete the set up in six various ways.
2) The installation should be solid and reliable.
3) Be sure to check 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 have developed several unique “square container” designed from high-quality aluminium die casting with a lovely 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 certainly a standard worm gearbox with a bronze worm gear and a worm. Our Helical gearbox product line comprises of four universal series (R/S/K/F) and a step-less rate 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 elective as components. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are therefore maintenancefree. They are characterized by high effectiveness and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t 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, whilst retaining torque or power. It is common for worm gears to have got reductions of 20:1, and also up to 300:1 or greater.
Usual gearing includes the unique capability which 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 is not 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.
Committed to excellence, our employees have the most important priority satisfying your gear building needs and product improvement.
Also, we take pride inside our equipment; few producers have the equipment to engineer metallic parts as specific as we do. Even fewer manufacturing businesses have the machining equipment 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 all of us to achieve the most challenging project requirements. The mixture of robust materials, advanced manufacturer systems, reliability and our commitment to client satisfaction makes us a high provider in advanced gearing and shafting products.
Our gear manufacturing places have over two decades of worm gear style expertise, gained through many tasks that included varied sizes of customized worm gears to print requirements.