This gearbox utilizes a 30:1 ratio worm-drive reduction for applications that require extremely slow and smooth rotational motion. The worm-drive design not only minimizes backlash but also eliminates back-generating the gearmotor so a position can be kept even when power is not applied. The precision ground 3/8” stainless steel result shaft is backed by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and light weight aluminum structure offers a rigid framework without adding unnecessary weight and can be easily mounted to any flat surface by utilizing the base 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-quickness 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 needed to achieve ten 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 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 level of standard in manufacturing of worm gears in gearboxes. From the look of gearbox, material selection to production practice of worm gear 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 often obtainable in stock or could be made on short 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 of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes have liberal ribbing for increasing temperature dissipation area, streamlined sump to carry 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. Quality 20, IS210.
High reduction gear
Worm and wheel equipment pairings provide large rate reduction ratios with only 1 equipment pairing in a far more compact space in comparison to other types of gears. We offer up to a maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel equipment pairings may be the low level sound they produce. Some disadvantages are the general low effectiveness and the actual 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 frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous structure is not cut.
2) The surface hardness after frosty rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cool rolled worms are suitable for miniature gear applications since this could be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Because of the implementation of this cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Cool Rolled Worms give a smooth operation and long-term durability.
Worm gears are made of a worm and a gear (sometimes known as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur gear. The worm is typically the driving 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 – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each full change (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the amount of starts on the worm. (That is different from most other types of gears, where in fact the gear reduction is certainly 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 warmth, which limits the efficiency 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 example, the worm may be made of hardened metal and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. Furthermore, the use of a softer materials for the apparatus means that it could absorb shock loads, like those experienced in heavy equipment or crushing machines.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as acceleration reducers in low- to medium-swiftness applications. And, because their decrease ratio is based on the number of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, making them ideal for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio rate reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the performance of a worm equipment drive depends upon the business lead angle and amount of starts on the worm – and because increased efficiency is always a goal, 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 can be ordered through the EP Gear Guaranteed Same Day Shipment Program for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, double and quad start configurations
How exactly to Select High Efficient Worm Gearbox?
The worm gear production process is also relatively simple. Nevertheless, there is a low transmission efficiency problem in the event that you don’t know the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you need to know:
1) Helix angle. The worm equipment drive efficiency mostly depend on the helix angle of the worm. Generally, multiple thread worms and gears is definitely more efficient than one thread worms. Proper thread worms can increase efficiency.
2) Lubrication. To choose a brand lubricating essential oil can be an essential factor to improve worm gearbox effectiveness. As the correct lubrication can decrease worm equipment action friction and warmth.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material should be hardened metal. The worm gear material should be aluminium bronze. By worm wheel gearbox reducing the worm gear hardness, the friction on the worm the teeth is reduced. In worm manufacturing, to use the specialized machine for gear trimming and tooth grinding of worms can also increase worm gearbox effectiveness.
From a sizable transmission gearbox power to a straight small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely suits your application requirements.
Worm Gear Package Assembly：
1) You may complete the installation in six different ways.
2) The installation should be solid and reliable.
3) Be sure to check the connection between your motor and the worm gear 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’ve developed several unique “square package” 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 usually 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 quickness 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 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 based on polyethylene glycol, and so are consequently maintenancefree. They are characterized by high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears aren’t ideal for positioning applications.
Worm Gear applications
Application of worm gears, which is similar to a standard spur and the worm, which really is a cylindrical equipment that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite common for worm gears to have reductions of 20:1, and actually up to 300:1 or greater.
Normal gearing includes the initial 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 apparatus attempts to rotate the worm, high frictional pressure between worm shaft and gear parts keep the zone stuck in position.
Committed to excellence, our employees possess the most important priority satisfying your equipment building needs and item improvement.
Also, we take pride inside our equipment; few producers have the gear to engineer metallic parts as exact as we do. Actually fewer manufacturing businesses have the machining equipment to check the tolerances we are able to hold.
Being a gearing manufacturer to Automotive level businesses, with a diverse supply of material types, allow all of us to attain the most challenging task requirements. The mixture of robust materials, advanced manufacturer technology, reliability and our commitment to customer satisfaction makes us a high supplier in advanced gearing and shafting products.
Our gear manufacturing locations have over twenty years of worm gear style knowledge, gained through many projects that included varied sizes of custom worm gears to print requirements.