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 only minimizes backlash but also eliminates back-driving the gearmotor so a position can be held even when power isn't applied. The precision surface 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to support a load from any orientation. The ¼” ABS plastic and aluminium structure provides a rigid framework without adding unnecessary weight and is easily mounted to any flat surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will continue to work with this gearbox (electric 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 / (mins per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need 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 Standard Spur Gear Motors
Ever-Power offers you the widest selection of standard, non standard 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 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 could be made on short notice by customer.
Worm gearboxes are having cast iron equipment 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 warmth dissipation area, streamlined sump for carrying more oil and fan of ample size which is effective in both part of rotation.
Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Gear case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel gear pairings provide large acceleration reduction ratios with only 1 equipment pairing in a more compact space when compared with 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 noise they produce. Some disadvantages will be the general low performance and the fact that they generate temperature.
Benefit of EP's Worm Gears – “Cool 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 fact that the metallic fibrous framework has not been cut.
2) The top hardness after cool rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Chilly rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Because of the implementation of this cold rolling technique, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cold Rolled Worms give a smooth procedure and long-term durability.
Worm gears are made 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 definitely analogous to a screw with a V-type thread, and the gear is definitely analogous to a spur equipment. The worm is normally 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 may have an individual start or multiple starts – and therefore 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. Therefore 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 number of starts on the worm. (That is different from most other types of gears, where in fact the gear reduction is usually a function of the diameters of the two components.)
The meshing of the worm and the apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and temperature, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, temperature), the worm and gear are made of dissimilar metals – for example, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.
Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and equipment also contributes to 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 apparatus means that it could absorb shock loads, like those skilled in large 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 used as acceleration reducers in low- to medium-acceleration applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch lead worm wheel gearbox screws, worm gears are typically self-locking, making them well suited for hoisting and lifting applications.
EP Gear's worms and worm gears provide an effective answer for power transmitting applications requiring high-ratio quickness reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.
Because the performance of a worm gear drive depends on the business lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears utilized 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 Program for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest form of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double 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 efficiency problem in the event that you don't know the how to select the worm gearbox. 3 basic indicate choose high worm equipment efficiency that you should know:
1) Helix position. The worm equipment drive efficiency mostly rely on the helix angle of the worm. Usually, multiple thread worms and gears is usually more efficient than single thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To select a brand lubricating essential oil is an essential factor to improve worm gearbox efficiency. As the correct lubrication can reduce worm gear action friction and warmth.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened metal. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm the teeth is reduced. In worm production, to use the specialized machine for gear slicing and tooth grinding of worms also can increase worm gearbox effectiveness.
From a large transmission gearbox power 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 Package Assembly：
1) You can complete the set up in six various ways.
2) The installation should be solid and reliable.
3) Ensure that you check the connection between the engine 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've developed several unique “square box” designed from high-quality aluminium die casting with a beautiful appearance. The modular worm gearbox style series: worm drive gearbox, parallel shaft gearbox, bevel helical gearbox, spiral bevel gearbox, coaxial gearbox, correct angle gearbox. An NMRV series gearbox can be 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 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 result or a cover for the short shaft end are optionally available as add-ons. EP gearboxes come with a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and are as a result maintenancefree. They are characterized by high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.
Worm Gear applications
Program 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 is common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.
Regular gearing includes the unique capability which additional gearing components don't have – the “worm” can effortlessly spin the part, however 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 in position.
Focused on excellence, our employees have the most crucial priority satisfying your equipment building needs and item improvement.
Also, we consider pride inside our equipment; few manufacturers have the equipment to engineer metallic parts as specific as we do. Also fewer manufacturing companies have the machining tools to check the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level businesses, with a diverse way to obtain material types, allow us to achieve the most challenging project requirements. The mixture of robust components, advanced manufacturer systems, reliability and our commitment 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 design experience, gained through many tasks that included varied sizes of customized worm gears to print requirements.