worm gear box assembly

Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature correct angle gearboxes offer high torque values with very low backlash in incredibly compact frames. Three gear ratios are available to meet up the requirements of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will need, demand a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be small, but it’s hard enough to take care of demanding power transfer applications. Constructed with machined aluminium housings and hardened steel input and result gears, they’ll deliver many years of reliable performance.
Available in three standard result ratios and with two output shaft diameter options, it’s simple to find the Ever-Power correct miniature gearbox to your requirements. Each RW model worm equipment box assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with suprisingly low backlash (maximum 2° backlash).
For full specs and Dimensional Parametric Search, see individual product listings.
The Ever-Power Advantage
High efficiency miniature right angle gearbox (up to 90% at 1,000 RPM)
Three equipment ratios available: 5:1, 10:1, and 20:1
Extremely compact footprint: 1.5” x 1.5” x 1.08”
12.5 inch-lbs. output torque
Suprisingly low backlash (2° backlash optimum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum housing with hardened metal gears and oil-impregnated bronze bearings
Permanently lubricated
Made in the China
Mechanical drives take supplied torque and may increase or reduce that torque based on application. Also swiftness is increased or reduced in proportion index G – GEAR BOXES – on blue – smallto the speed reduction ratio. Ever-Power includes a full type of gearboxes and swiftness reducers, and the parts had a need to build them, in a wide variety of regular ratios and shaft choices as well as custom designs.
Helical, bevel, and miter equipment boxes provide options of quickness reducers or swiftness increasers, and could be powered in either direction. All Ever-Power worm equipment speed reducers and right angle drives are manufactured for powerful in a large spectral range of applications. Typically worm equipment boxes aren’t used as acceleration increasers. The situations are molded glass-filled material making them extremely tough and resistant to corrosive conditions. They can be found in an array of ratios and are equipped with right hand or left hand worm gears. The result shafts may be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear swiftness reducers are made up of a screw (the worm) that drives a wheel (helical gear) or one enveloping wheel and so are found in mechanical applications which range from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the powered wheel advancing it by one stage and a blocking disc that locks the driven wheel in position between steps.
Compact design
Compact design is one of the key phrases of the typical gearboxes of the BJ-Series. Further optimisation can be achieved by using adapted gearboxes or special gearboxes.
Low noise
Our worm gearboxes and actuators are extremely quiet. This is because of the very smooth working of the worm gear combined with the use of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we consider extra care of any sound which can be interpreted as a murmur from the apparatus. Therefore the general noise level of our gearbox is certainly reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to one another. This frequently proves to be a decisive advantage producing the incorporation of the gearbox substantially simpler and smaller sized.The worm gearbox can be an angle gear. This is often an advantage for incorporation into constructions.
Solid bearings in solid housing
The output shaft of the BJ worm gearbox is very firmly embedded in the gear house and is well suited for direct suspension for wheels, movable arms and other parts rather than having to build a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes provides a self-locking effect, which in many circumstances can be utilized as brake or as extra security. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them well suited for a wide range of solutions.
Structural Features
The worm-gear reducer comprises of three main parts: housing, worm-gear and wheel.
The carcasses are constructed with GG-25 cast-iron, and are available for all sorts of gear-reducer. This make them perform effectively under stressed conditions, vibrations or any kind of setback that can’t be avoided during the assembly
The worm-gear is made from hardened and quench-hardened steel, with ground- on teeth sides, and the crowns manufactured from DIN (GZ-CuSn 12 Ni2) centricast bronze, melted on steel. Because of the mechanical work of the two parts having top quality, excellent performance and low sound amounts have been achived.
The output shaft is hollow, though it can be done to adapt a good shaft.
The oil seals made of NITRILE BUTADIENE, according to DIN 3760, top quality bearings, an EPOXY- impregnated finish ( 2 components), and grey-coloured SINGLE LAYER ENAMEL finish ( 2 components) ( RAL 7672), provide the most competitive gear reducer available.
Size 63
In the size 62 of the MF series, worm-gear reducers, the output hollow shaft of diameter 30 has been included, that substitutes to the output hollow shaft with diameter 25, from size 62. This variant provides like reference size 63 and exists like answer to the request of our costumers since, upon mounting greater bearings in the output, bears higher axial loads that its analogous one in the MF-62 series. The rest of technical feature are identical to the its analogous in the size 62.
Assembly Position
In order to create a gear reducer and also to make it happen efficiently, the following instructions must be taken into account:
It must be fixed on a flat surface in order to avoid either vibrations or tensions.
If undistributed loads or continued start-ups are foreseen, it is suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer needed to be painted, the oil seals must be covered to avoid them from drying and losing their seal.
The machine work of the fittings set up in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to pay attention to this element when the gear reducer result shaft is driven instead of being a driver. Considering that among the features of this worm-equipment reducer is the fact that cannot be axle-driven by the result shaft (irreversibility), it is almost difficult to meet total Worm Gear Box Assembly irreversibility conditions, because of external elements such as for example vibrations, etc. For this reason, when the application form needs total irreversibility, it really is advisable to utilize external brakes with enough power to avoid slipping.
It may be said that the circumstances under which irreversibility can occur are as follows:
• Efficiency < 0,55 (see table of specialized features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so that it really does not need any kind of maintenance.
Lubrication
The lubrication of the gear reducer type is constant and comes as standard, with top quality refined oil which includes antirust and antiwear products with Fe, Cu and alloy protectors which has quality level CLP DIN 51517-3, FGZ level 12, AP GL-4, US 224, AGMA 250-04; for that reason its maintenance is not needed.

High reduction gear
Worm and wheel gear pairings provide large speed reduction ratios with only one equipment pairing in a far more compact space in comparison to other styles of gears. You can expect up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings may be the low level sound they produce. Some disadvantages will be the general low performance and the actual fact that they generate warmth.

Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the cold 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 surface hardness after frosty 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 area increases to around HB240 to 260.

3) Cold rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.

4) Due to the implementation of the cold rolling technique, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms provide 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, nonintersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur gear. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.

Just like a ball screw, the worm in a worm gear might have an individual start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each complete switch (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth will provide 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 not the same as almost every other types of gears, where in fact the gear reduction is a function of the diameters of the two 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 action 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 from 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 usage of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as for example in elevators. In addition, the utilization of a softer material for the gear means that it could absorb shock loads, like those skilled in weighty equipment or crushing machines.

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 swiftness reducers in low- to moderate-swiftness applications. And, because their reduction ratio is founded on the amount of gear teeth by itself, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them perfect 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 quickness reduction in a limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the efficiency of a worm equipment drive depends upon the lead angle and quantity of begins on the worm – and because increased efficiency is always an objective, the ratio should be kept only possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.

Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day Shipment System for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power tranny 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 level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, dual and quad start configurations

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