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 position can be kept even when power is not applied. The precision floor 3/8” stainless steel result 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 can be easily installed to any flat worm wheel gearbox surface by utilizing the base mounting tabs. Our Regular Spur Gear motors will continue to work with this gearbox (engine offered separately). The Vertical Shaft Worm-Drive Gearbox is ideal for turn-tables, time-lapse systems and low-speed applications that want high precision and torque.
Motor RPM required = 1 / (moments per rotation desired / 30)
Example: 1 / (10 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 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. Right from the look of gearbox, material selection to production 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
Center 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 available in stock or could be made on brief notice by customer.
Worm gearboxes are having cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze.
Ever-Power worm equipment boxes possess liberal ribbing for increasing heat dissipation region, streamlined sump for carrying more oil and lover of ample size which is effective in both part of rotation.
Design Standards:
Wherever applicable, British along with Indian Design standards are used. Worm Shafts conform to 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 decrease ratios with only 1 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 gear pairings may be the low level noise they produce. Some drawbacks will be the general low efficiency and the fact that they generate heat.
Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous structure is not 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 initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cold rolled worms are ideal for miniature equipment applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Because of 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 Cold 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 one another. The worm can be analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is normally the driving component, with the worm’s thread advancing one’s teeth of the gear.
Like 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 complete convert (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-start worm, the gear reduction equals the amount of teeth on the gear, divided by the number of starts on the worm. (This is different from almost every 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 gear is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and high temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, high temperature), the worm and equipment are made of dissimilar metals – for instance, the worm may be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. In addition, the use of a softer materials for the gear means that it can absorb shock loads, like those experienced in large equipment or crushing devices.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as swiftness reducers in low- to medium-quickness applications. And, because their decrease ratio is based on the number of gear teeth only, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are typically self-locking, making 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 limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm equipment drive depends upon the lead angle and number 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 used together will need to 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 Program 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 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, double and quad start configurations
How to Select High Efficient Worm Gearbox?
The worm gear manufacturing process can be relatively simple. Nevertheless, there is a low transmission effectiveness problem if you don’t know the how to choose the worm gearbox. 3 basic point to choose high worm equipment efficiency that you should know:
1) Helix position. The worm gear drive efficiency mostly depend 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 effectiveness.
2) Lubrication. To select a brand lubricating essential oil can be an essential factor to boost worm gearbox efficiency. As the proper lubrication can decrease worm equipment action friction and high temperature.
3) Material selection and Gear Manufacturing Technology. For worm shaft, the material ought to be hardened metal. The worm gear material should be aluminium bronze. By reducing the worm equipment hardness, the friction on the worm teeth is decreased. In worm manufacturing, to use the specialized machine for gear trimming and tooth grinding of worms also can increase worm gearbox effectiveness.
From a large transmission gearbox power to an even small worm gearbox load, you can choose one from a wide selection of worm reducer that precisely fits your application requirements.
Worm Gear Box Assembly：
1) You may complete the installation in six different ways.
2) The installation must be solid and reliable.
3) Ensure that you check the connection between your electric motor and the worm gear reducer.
4) You must use flexible cables and wiring for a manual set up.
With the help of the most advanced 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, right angle gearbox. An NMRV series gearbox is 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 speed variation UDL series. Their framework and function are similar to 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 short 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 seen as a high performance and self-locking.
Please note:
Because of their relatively high backlash (~1-2°), worm gears are not suitable for positioning applications.
Worm Gear applications
Software of worm gears, which is comparable to a typical spur and the worm, which is a cylindrical equipment that resembles a screw, allows for smaller gearboxes or planetary drives, whilst retaining torque or power. It is common for worm gears to have got reductions of 20:1, and also up to 300:1 or greater.
Common gearing includes the unique capability which other gearing components don’t 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 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 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 consider pride inside our equipment; few manufacturers have the gear to engineer metal parts as specific as we do. Also fewer manufacturing businesses have the machining apparatus to check on the tolerances we are able to 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 project requirements. The mixture of robust materials, advanced manufacturer systems, reliability and our commitment to customer satisfaction makes us a high supplier in advanced gearing and shafting products.
Our gear manufacturing places have over two decades of worm gear style experience, gained through many tasks that included varied sizes of custom made worm gears to print requirements.