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-traveling the gearmotor so a posture can be held even when power is not applied. The precision surface 3/8” stainless steel result shaft is supported by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and light weight aluminum structure provides a rigid framework without adding unnecessary weight and is definitely easily mounted to any flat work surface by utilizing the bottom mounting tabs. Our Regular Spur Gear motors will work with this gearbox (electric motor sold separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed applications that require high precision and torque.
Motor RPM required = 1 / (minutes per rotation desired / 30)
Example: 1 / (10 minutes per rotation / 30) = 3 RPM motor had a need to achieve ten 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 gives you the widest selection of standard, non standard and customised worm gearbox and worm gear motor.
Ever-Power maintains the best degree 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 electric 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 often obtainable in stock or can be made on brief notice by customer.
Worm gearboxes are experiencing 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 equipment boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump for carrying more oil and enthusiast of ample size which works well in both side 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 equipment pairings provide large acceleration reduction ratios with only one equipment pairing in a more compact space when compared with other types of gears. You can expect up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some disadvantages are the general low efficiency and the fact that they generate warmth.
Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous framework has not been cut.
2) The top hardness after cold 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 gear applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Because of the implementation of this cold rolling method, 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 operation and long term durability.
Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with non-parallel, 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 definitely analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing one’s teeth of the gear.
Like 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 turn (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 apparatus, divided by the number of begins on the worm. (That is different from almost every other types of gears, where in fact the gear reduction is certainly 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 heat, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, heat), the worm and equipment are constructed with 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 very quiet operation. (The utilization of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears ideal for use where noise should be minimized, such as in elevators. In addition, the utilization of a softer material for the gear means that it could absorb shock loads, like those experienced in large equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as rate reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the number of gear teeth alone, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are worm wheel gearbox usually self-locking, which makes them ideal for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmission applications requiring high-ratio velocity reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest type of gearing.
Because the efficiency of a worm gear drive depends upon the business lead angle and amount of begins on the worm – and because increased efficiency is always an objective, the ratio ought to be kept only possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Time Shipment Program for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is level of resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, double and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear production process can be relatively simple. Nevertheless, there exists a low transmission efficiency problem in the event that you don’t know the how to choose 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 position of the worm. Generally, multiple thread worms and gears is certainly more efficient than single thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To select a brand lubricating essential oil is an essential factor to boost worm gearbox efficiency. As the correct lubrication can reduce worm equipment action friction and heat.
3) Materials selection and Gear Production Technology. For worm shaft, the material ought to be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is reduced. In worm manufacturing, to use the specialized machine for gear slicing and tooth grinding of worms can also increase worm gearbox efficiency.
From a large transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide variety of worm reducer that precisely fits your application requirements.
Worm Gear Box Assembly：
1) You may complete the set up in six different ways.
2) The installation must be solid and reliable.
3) Make sure to verify the connection between your electric motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual set up.
By using the innovative science and drive technology, we have developed several unique “square container” 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, correct angle gearbox. An NMRV series gearbox is certainly a typical 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 act like 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 brief shaft end are optionally available as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and so are as a result maintenancefree. They are characterized by high efficiency 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 comparable to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.
Typical gearing includes the unique capability which additional gearing components do not have – the “worm” can effortlessly spin the part, however the “gears” cannot maneuver and fully rotate the worm-zone.
What’s the real reason for this inability to rotate the gear-worm?
The angle is not deep enough on the worm, so when the gear attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep carefully the zone stuck in position.
Focused on excellence, our employees have the most crucial 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. Even fewer manufacturing companies have the machining apparatus to check on the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level companies, with a diverse way to obtain material types, allow us to achieve the most challenging project requirements. The mixture of robust materials, advanced manufacturer technologies, reliability and our commitment to customer satisfaction makes us a top supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over twenty years of worm gear design experience, gained through many projects that included varied sizes of custom worm gears to print requirements.