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 held even when power is not applied. The precision ground 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 light weight aluminum structure offers a rigid framework without adding unnecessary weight and is certainly easily mounted to any flat surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (motor sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-swiftness applications that require high precision and torque.
Motor RPM required = 1 / (moments per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 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 gives you the widest selection of standard, non regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest level of standard in manufacturing of worm gears in gearboxes. Right 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
Middle 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 gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is constructed of Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and enthusiast of ample size which is effective in both side 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 as per BS 1400, While Gear case conforms to C.I. Quality 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large acceleration decrease ratios with only 1 equipment pairing in a more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some disadvantages will be the general low effectiveness and the fact that they generate heat.
Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms because of reality that the metallic fibrous framework has not been cut.
2) The surface hardness after cool rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.
4) Due to the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. 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 non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is typically the generating 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 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 gear by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start worm, the gear reduction equals the number of teeth on the apparatus, divided by the amount of starts on the worm. (This is different from most other types of gears, where the gear reduction is definitely a function of the diameters of both components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding contact 
dominates at high reduction ratios. This sliding actions causes friction and heat, 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 made from dissimilar metals – for instance, the worm could be made of hardened steel and the gear manufactured from 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 sound 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 experienced in large equipment or crushing devices.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as acceleration reducers in low- to medium-velocity applications. And, because their decrease ratio is based on the number of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch 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 a highly effective answer for power tranny applications requiring high-ratio acceleration reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends on the business lead angle and quantity of starts 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 must have the same diametral pitch and threads.
Our complete line of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day Shipment Plan for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest form of gearing.
They offer high-ratio speed reduction in worm wheel gearbox minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is level of resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear manufacturing process is also relatively simple. Nevertheless, there exists a low transmission effectiveness problem in the event that 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 equipment drive efficiency mostly depend on the helix angle of the worm. Usually, multiple thread worms and gears can be more efficient than solitary thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to boost worm gearbox effectiveness. As the correct lubrication can decrease worm equipment action friction and heat.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened metal. The worm gear material should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm the teeth is reduced. In worm manufacturing, to use the specific machine for gear cutting and tooth grinding of worms also can increase worm gearbox performance.
From a big transmission gearbox capacity to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely matches your application requirements.
Worm Gear Package Assembly：
1) You can complete the installation in six different ways.
2) The installation must be solid and reliable.
3) Make sure to examine the connection between your electric motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual installation.
With the help of the innovative science and drive technology, we have developed several unique “square package” designed from high-quality aluminium die casting with a lovely 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 certainly a standard worm gearbox with a bronze worm gear 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 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 result or a cover for the short shaft end are elective as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are as a result maintenancefree. They are seen as a high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
Application of worm gears, which is similar to a typical spur and the worm, which is a cylindrical gear that resembles a screw, permits 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.
Standard gearing includes the unique capability which 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 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 constantly in place.
Focused on excellence, our employees have the most important priority satisfying your equipment building needs and item improvement.
Also, we take pride inside our equipment; few producers have the gear to engineer steel parts as specific as we do. Also fewer manufacturing companies have the machining tools to check the tolerances we can hold.
Being a gearing producer to Automotive level businesses, with a diverse supply of material types, allow all of us to attain the most challenging project requirements. The combination of robust components, advanced manufacturer technologies, reliability and our dedication to client satisfaction makes us a top supplier in advanced gearing and shafting products.
Our gear manufacturing places have over twenty years of worm gear style experience, gained through many tasks that included varied sizes of custom worm gears to print requirements.