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 posture can be held even when power is not applied. The precision ground 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 aluminum structure provides a rigid framework without adding unnecessary weight and is definitely easily mounted to any flat surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will work with this gearbox (engine sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-swiftness 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 had a need to achieve ten minutes per rotation (in 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 Standard Spur Gear Motors
Ever-Power gives you the widest selection of standard, non regular and customised worm gearbox and worm equipment motor.
Ever-Power maintains the best degree of standard in manufacturing of worm gears in gearboxes. From the design of gearbox, material selection to production 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
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 available in stock or could 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 made from Chill Cast Phosphorous Bronze.
Ever-Power worm gear boxes possess liberal ribbing for increasing temperature dissipation region, streamlined sump to carry more oil and enthusiast of ample size which is effective in both aspect of rotation.
Design Standards:
Wherever applicable, British in addition to Indian Design standards are used. Worm Shafts comply with 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 velocity reduction ratios with only one equipment pairing in a more compact space when compared with other types of gears. We offer up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings may be the low level noise they produce. Some disadvantages will be the general low effectiveness and the fact that they generate heat.
Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function 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 chilly rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial materials, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cold rolled worms are suitable for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of POM or additional soft materials.
4) Due to 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 finish. Thus, EP-Precision Chilly Rolled Worms give a smooth operation and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is analogous to a screw with a V-type thread, and the gear is analogous to a spur equipment. The worm is typically the traveling component, with the worm’s thread advancing one’s teeth of the gear.
Just like a ball screw, the worm in a worm gear might have a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each complete switch (360 degrees) of the worm increases the gear by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-start worm, the gear reduction equals the amount 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 usually a function of the diameters of the two 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 efficiency of worm gears to 30 to 50 worm wheel gearbox percent. In order to minimize friction (and therefore, warmth), the worm and gear are made from dissimilar metals – for example, the worm could be made of hardened metal 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 gear also contributes to quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. In addition, the use of a softer materials for the gear means that it could absorb shock loads, like those skilled in weighty equipment or crushing devices.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as velocity reducers in low- to medium-acceleration applications. And, because their reduction ratio is founded on the amount of gear teeth by itself, they are smaller sized than other styles of gears. Like fine-pitch lead screws, worm gears are typically 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 rate reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the efficiency of a worm gear drive depends upon the business lead angle and quantity of begins on the worm – and because increased effectiveness is always a goal, the ratio should be kept as low as possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete line 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 offer high-ratio speed decrease in 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, dual and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. However, there is a low transmission effectiveness problem in the event that you don’t understand the how to select 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. Usually, multiple thread worms and gears can be 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 efficiency. As the proper lubrication can reduce worm equipment action friction and warmth.
3) Material selection and Gear Manufacturing 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 the 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 huge transmission gearbox power 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 Container Assembly：
1) You may complete the set up in six different ways.
2) The installation should be solid and reliable.
3) Be sure to check the connection between your electric motor and the worm gear reducer.
4) You must make use of flexible cables and wiring for a manual set up.
With the help of the most advanced science and drive technology, we’ve developed several unique “square container” 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 definitely a standard worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products consists of four universal series (R/S/K/F) and a step-less acceleration 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 dual shaft for double-sided result or a cover for the brief shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are consequently maintenancefree. They are characterized by high effectiveness and self-locking.
Please note:
Because of 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 typical spur and the worm, which really is a cylindrical gear that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to possess reductions of 20:1, and actually up to 300:1 or greater.
Standard gearing includes the unique capability which other gearing components do not 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 real reason for this inability to rotate the gear-worm?
The angle isn’t 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 gear building needs and product improvement.
Also, we consider pride inside our equipment; few producers have the equipment to engineer metal parts as precise as we do. Actually fewer manufacturing companies have the machining equipment to check the tolerances we can hold.
Being a gearing manufacturer to Automotive level companies, with a diverse way to obtain material types, allow all of us to achieve the most challenging project requirements. The mixture of robust materials, advanced manufacturer systems, reliability and our dedication to client satisfaction makes us a top provider in advanced gearing and shafting products.
Our gear manufacturing locations have over twenty years of worm gear design expertise, gained through many tasks that included varied sizes of custom worm gears to print requirements.