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 position can be kept even when power is not applied. The precision ground 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 aluminium structure provides a rigid framework without adding unnecessary weight and is definitely easily installed to any flat work surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will work with this gearbox (electric motor sold separately). The Vertical Shaft Worm-Drive Gearbox is perfect for turn-tables, time-lapse systems and low-speed applications that require high precision and torque.
Motor RPM required = 1 / (mins 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″
Item Weight 5.9oz (0.375 lbs)
Output Shaft Diameter 3/8″ (0.375″)
Motor Size Compatibility Regular 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 degree of standard in manufacturing of worm gears in gearboxes. From the design of gearbox, worm wheel gearbox material selection to manufacturing practice of worm gear 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 Versions 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 brief 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 from Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing warmth dissipation region, streamlined sump to carry more oil and lover of ample size which works well in both side of rotation.
Design Standards:
Wherever applicable, British and also Indian Design standards are used. Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels comply with 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 decrease ratios with only one gear pairing in a more compact space in comparison to other styles of gears. We offer up to 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 are the general low effectiveness and the fact that they generate temperature.
Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth 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 in comparison to the hardness of the original material, 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 of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms provide a smooth procedure and long-term durability.
Worm gears are constructed 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 definitely analogous to a screw with a V-type thread, and the gear is analogous to a spur equipment. The worm is normally the traveling 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 complete turn (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the amount of begins on the worm. (That is different from most other types of gears, where the gear reduction can be 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 temperature, 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 constructed with dissimilar metals – for instance, the worm may be made of hardened steel and the gear made of bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and gear also plays a part in quiet operation.) 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 machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as quickness reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the number of gear teeth only, they are smaller sized than other types of gears. Like fine-pitch lead screws, worm gears are typically 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 transmitting applications requiring high-ratio acceleration reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.
Because the performance of a worm gear drive depends on the lead angle and number of begins on the worm – and because increased efficiency is always a goal, the ratio should be kept as low as possible. To run properly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest type of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by lowering ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear production process can be relatively simple. However, there is a low transmission efficiency problem if you don’t understand the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you ought to know:
1) Helix position. The worm gear drive efficiency mostly rely on the helix position of the worm. Generally, multiple thread worms and gears is usually more efficient than one thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To choose a brand lubricating essential oil is an essential factor to boost worm gearbox effectiveness. As the correct lubrication can reduce worm equipment action friction and high temperature.
3) Materials selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened steel. The worm gear materials should be aluminium bronze. By reducing the worm gear hardness, the friction on the worm teeth is reduced. In worm production, to use the specific machine for gear trimming and tooth grinding of worms also can increase worm gearbox efficiency.
From a huge transmission gearbox capacity to an even small worm gearbox load, you can choose one from an array of worm reducer that precisely matches your application requirements.
Worm Gear Box Assembly：
1) You can complete the set up in six different ways.
2) The installation should be solid and reliable.
3) Make sure to check the connection between the motor and the worm equipment reducer.
4) You must make use of flexible cables and wiring for a manual set up.
With the help of the innovative science and drive technology, we’ve developed several unique “square container” 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 definitely a typical worm gearbox with a bronze worm equipment and a worm. Our Helical gearbox product line consists of four universal series (R/S/K/F) and a step-less quickness 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 double shaft for double-sided output or a cover for the short shaft end are elective as accessories. EP gearboxes have a high-quality, long-term synthetic lubricant based on polyethylene glycol, and are consequently maintenancefree. They are seen as a high efficiency and self-locking.
Please note:
Due to their relatively high backlash (~1-2°), worm gears are not ideal for positioning applications.
Worm Gear applications
App of worm gears, which is similar to a typical 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.
Standard gearing includes the unique capability which additional 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 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 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 consider pride in our equipment; few manufacturers have the equipment to engineer metal parts as precise as we do. Also fewer manufacturing companies have the machining gear to check on the tolerances we can hold.
Being a gearing manufacturer to Automotive level companies, with a diverse supply of material types, allow us to achieve the most challenging project requirements. The combination of robust components, advanced manufacturer systems, reliability and our dedication to customer satisfaction makes us a top supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over two decades of worm gear design expertise, gained through many tasks that included varied sizes of custom made worm gears to print requirements.