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-traveling the gearmotor so a posture can be held even when power is not applied. The precision ground 3/8” stainless steel output shaft is backed by dual 3/8” ABEC 5 ball bearings to aid a load from any orientation. The ¼” ABS plastic and aluminium structure offers a rigid framework without adding unnecessary weight and is definitely easily mounted to any flat surface by utilizing the bottom mounting tabs. Our Standard Spur Gear motors will work with this gearbox (motor offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-quickness applications that want high precision and torque.
Motor RPM required = 1 / (a few minutes per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor had a need 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 Regular Spur Gear Motors
Ever-Power gives you the widest range of standard, non regular and 
customised worm gearbox and worm gear motor.
Ever-Power maintains the best level of standard in production of worm gears in gearboxes. From the design 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 Versions 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 experiencing cast iron equipment case, worm shaft is of Alloy Steel, 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 fan of ample size which works well in both aspect of rotation.
Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts comply with case- hardening Alloy Steels, Worm Wheels comply with 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 swiftness reduction ratios with only one equipment pairing in a more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks will be the general low performance and the fact that they generate temperature.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved 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 cold rolling is increased by 1.2 to 1 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 ideal for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Because of the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Frosty Rolled Worms give a smooth procedure and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur gear. The worm is typically the generating 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 a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full convert (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the apparatus reduction equals the amount of teeth on the gear, divided by the number of begins on the worm. (That is different from most other types of gears, where the gear reduction is usually a function of the diameters of the two 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 action causes friction and warmth, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, warmth), the worm and gear are made of dissimilar metals – for example, the worm could be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and gear also contributes to quiet procedure.) This makes worm gears ideal for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer material 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 acceleration reducers in low- to medium-speed applications. And, because their reduction ratio is based on the number of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, which makes them well suited for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power tranny applications requiring high-ratio velocity reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm gear drive depends upon the lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio should be kept as low as possible. To run correctly, worms and worm gears utilized together will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Time Shipment System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest form of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is resistance to back driving.
Available 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 manufacturing process is also relatively simple. However, there is a low transmission effectiveness problem in the event that you don’t understand the how to select the worm gearbox. 3 basic indicate 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. Usually, multiple thread worms and gears can be more efficient than worm wheel gearbox solitary thread worms. Proper thread worms can increase effectiveness.
2) Lubrication. To choose a brand lubricating oil can be an essential factor to boost worm gearbox efficiency. As the correct lubrication can decrease worm equipment action friction and heat.
3) Material selection and Gear Production Technology. For worm shaft, the material should be hardened steel. The worm gear material ought to be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm the teeth is decreased. In worm production, to use the specific machine for gear reducing and tooth grinding of worms also can increase worm gearbox effectiveness.
From a big transmission gearbox capacity to a straight small worm gearbox load, you can choose one from an array of worm reducer that precisely suits your application requirements.
Worm Gear Box Assembly：
1) You may complete the installation in six various ways.
2) The installation should be solid and reliable.
3) Make sure to check the connection between the 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 most advanced science and drive technology, we have developed several unique “square package” 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, right 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 acceleration 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 brief shaft end are elective as add-ons. EP gearboxes have a high-quality, long-term synthetic lubricant on the basis of 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
Program of worm gears, which is similar to a typical spur and the worm, which is a cylindrical gear that resembles a screw, permits smaller gearboxes or planetary drives, whilst retaining torque or power. It’s quite common for worm gears to possess reductions of 20:1, and also up to 300:1 or greater.
Regular gearing includes the unique capability which various other gearing components do not 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 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 gear building needs and product improvement.
Also, we consider pride in our equipment; few manufacturers have the equipment to engineer metal parts as specific as we do. Also fewer manufacturing businesses have the machining apparatus to check the tolerances we are able to hold.
Being a gearing producer 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 components, advanced manufacturer technology, reliability and our dedication to client satisfaction makes us a top supplier in advanced gearing and shafting items.
Our gear manufacturing places have over twenty years of worm gear style knowledge, gained through many projects that included varied sizes of custom worm gears to print requirements.