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-traveling 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 aluminum structure provides a rigid framework without adding unnecessary weight and is certainly easily installed to any flat work surface by utilizing the bottom mounting tabs. Our Standard 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-speed applications that want high precision and torque.
Motor RPM worm wheel gearbox required = 1 / (minutes per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (at 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 range of standard, non regular and customised worm gearbox and worm gear motor.
Ever-Power maintains the highest level of standard in production of worm gears in gearboxes. Right from the look of gearbox, materials 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
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 often available in stock or can be made on short notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Metal, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing high temperature 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 in addition to Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze according to BS 1400, While Equipment case conforms to C.I. Grade 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large speed decrease ratios with only 1 gear pairing in a far more compact space in comparison to other types of gears. You can expect up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings is the low level noise they produce. Some disadvantages will be the general low effectiveness and the fact that they generate high temperature.
Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the 
metallic fibrous framework is not cut.
2) The surface hardness after cool rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cool rolled worms are suitable for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of 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 Cool Rolled Worms provide a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is definitely analogous to a screw with a V-type thread, and the gear is certainly analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.
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 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 amount of teeth on the apparatus, divided by the amount of begins on the worm. (This is different from most other types of gears, where 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 actions causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, high temperature), the worm and gear are made from dissimilar metals – for instance, the worm may 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 use of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. Furthermore, the usage of a softer materials for the gear means that it can absorb shock loads, like those experienced in weighty equipment or crushing devices.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as swiftness reducers in low- to medium-swiftness applications. And, because their reduction ratio is based on the amount of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, making 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 transmitting applications requiring high-ratio acceleration reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the performance of a worm equipment drive depends upon the lead angle and amount of starts on the worm – and because increased effectiveness is always a goal, the ratio ought to be kept as low as 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 Time Shipment Plan for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide 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.
Offered 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 if you don’t understand the how to select the worm gearbox. 3 basic point to choose high worm gear efficiency that you need to know:
1) Helix position. The worm gear drive efficiency mostly rely on the helix angle of the worm. Generally, multiple thread worms and gears is usually more efficient than solitary thread worms. Proper thread worms can increase performance.
2) Lubrication. To select a brand lubricating essential oil is an essential factor to improve worm gearbox efficiency. As the proper lubrication can reduce worm equipment action friction and high temperature.
3) Materials selection and Gear Production Technology. For worm shaft, the material should be hardened metal. The worm gear material should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is decreased. In worm manufacturing, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox efficiency.
From a big transmission gearbox power to an even small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely suits your application requirements.
Worm Gear Box Assembly：
1) You can complete the installation in six various ways.
2) The installation must be solid and reliable.
3) Ensure that you verify the connection between the electric motor and the worm gear reducer.
4) You must make use of 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 beautiful 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 usually a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox products comprises of four universal series (R/S/K/F) and a step-less speed variation UDL series. Their structure 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 result or a cover for the short shaft end are optionally available as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of polyethylene glycol, and so are therefore maintenancefree. They are seen as a high performance and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Software of worm gears, which is comparable to a standard 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 is common for worm gears to possess reductions of 20:1, and actually up to 300:1 or greater.
Normal gearing includes the unique capability which various other gearing components do not have – the “worm” can effortlessly spin the part, but the “gears” cannot 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 the zone stuck in position.
Focused on excellence, our employees possess the most important priority satisfying your equipment building needs and product improvement.
Also, we take pride inside our equipment; few manufacturers have the gear to engineer metallic parts as precise as we do. Actually fewer manufacturing companies have the machining gear 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 task requirements. The combination of robust components, advanced manufacturer technology, reliability and our dedication to customer satisfaction makes us a high supplier in advanced gearing and shafting items.
Our gear manufacturing locations have over twenty years of worm gear design knowledge, gained through many tasks that included varied sizes of customized worm gears to print requirements.