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-driving the gearmotor so a position can be held even when power isn’t applied. The precision floor 3/8” stainless steel output shaft is supported by dual 3/8” ABEC 5 ball bearings to aid lots from any orientation. The ¼” ABS plastic and aluminum structure provides a rigid framework without adding unnecessary weight and is usually easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (engine marketed separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed 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 ten minutes per rotation (in 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 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 design of gearbox, materials selection to production practice of worm equipment box and gear engine.
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 available in stock or can be made on short 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 equipment boxes possess liberal ribbing for increasing heat dissipation region, streamlined sump for carrying more oil and fan of ample size which is effective in both part of rotation.
Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with phosphorous-bronze according to BS 1400, While Gear case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large quickness decrease ratios with only one gear pairing in a more compact space when compared with other styles of gears. You can expect up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings is the low level noise they produce. Some drawbacks will be the general low performance and the fact that they generate high temperature.
Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous structure has not been cut.
2) The top hardness after chilly 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) Cold rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Cold Rolled Worms provide a smooth procedure and long term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is usually analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.
Such as a ball screw, the worm in a worm gear might have 
an individual start or multiple starts – meaning that 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. So a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the number of teeth on the gear, divided by the number of begins on the worm. (This is different from most other types of gears, where the gear reduction is usually a function of the diameters of the two components.)
The meshing of the worm and the gear 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 effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and gear are made from dissimilar metals – for instance, the worm could be made of hardened steel and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The utilization of dissimilar metals for the worm and equipment also plays a part in quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. In addition, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in weighty 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 utilized as quickness reducers in low- to medium-velocity applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are more compact than other types of gears. Like fine-pitch business 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 transmission applications requiring high-ratio quickness reduction in a restricted space using correct 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 on the lead angle and number of begins on the worm – and because increased performance is always an objective, the ratio ought to be kept as low as possible. To run properly, 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 Gear Guaranteed Same Day time Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest form 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.
Available from 48 DP to 3 DP
Stocked as single, dual 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 effectiveness problem if you don’t understand the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you should know:
1) Helix angle. The worm gear drive efficiency mostly rely on the helix position of the worm. Usually, 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 boost worm gearbox performance. As the proper lubrication can reduce worm gear action friction and high temperature.
3) Materials selection and Gear Production Technology. For worm shaft, the material ought to be hardened metal. The worm gear materials ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is decreased. In worm production, to use the specific machine for gear reducing and tooth grinding of worms can also increase worm gearbox effectiveness.
From a large 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) Make sure to verify the connection between your engine and the worm equipment reducer.
4) You must use flexible cables and wiring for a manual installation.
By using the most advanced science and drive technology, we have developed several unique “square box” 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 typical 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 rate 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 double shaft for double-sided output or a cover for the brief shaft end are elective as components. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so 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 are not suitable for positioning applications.
Worm Gear applications
Program of worm gears, which is comparable to a typical spur and the worm, which is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, while 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 various other gearing components don’t have – the “worm” can effortlessly spin the part, but the “gears” are not able to 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 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 gear building needs and product improvement.
Also, we take pride in our equipment; few manufacturers have the equipment to engineer metal parts as specific as we do. Actually fewer manufacturing companies have the machining tools to check on the tolerances we can hold.
Being a gearing producer to Automotive level companies, with a diverse way to obtain material types, allow all of us to achieve the most challenging project requirements. The combination of robust components, advanced manufacturer systems, worm wheel gearbox reliability and our dedication to client satisfaction makes us a top provider in advanced gearing and shafting items.
Our gear manufacturing places have over two decades of worm gear style expertise, gained through many tasks that included varied sizes of custom made worm gears to print requirements.