Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature right angle gearboxes offer high torque values with very low backlash in extremely Worm Gear Box Assembly compact frames. Three equipment ratios are available to meet up the needs of your specific application.
Order the Ever-Power RW Series worm equipment box assembly you need, demand a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be little, but it’s tough enough to handle demanding power transfer applications. Constructed with machined aluminium housings and hardened steel input and result gears, they’ll deliver many years of reliable performance.
Obtainable in three standard result ratios and with two result shaft diameter options, it’s simple to find the Ever-Power right miniature gearbox for your needs. Each RW model worm equipment package assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with very low backlash (maximum 2° backlash).
For full specs and Dimensional Parametric Search, see individual item 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 maximum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum casing with hardened steel 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 rate is increased or decreased in proportion index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a full line of gearboxes and acceleration reducers, and the parts needed to build them, in an array of regular ratios and shaft options in addition to custom designs.
Helical, bevel, and miter equipment boxes offer the options of velocity reducers or acceleration increasers, and may be driven in either path. All Ever-Power worm equipment speed reducers and right angle drives are manufactured for high performance in a large spectrum of applications. Typically worm equipment boxes aren’t used as speed increasers. The instances are molded glass-filled material making them extremely durable and resistant to corrosive environments. They are offered in an array of ratios and are equipped with right hand or left hand worm gears. The result shafts could be solid or hollow, and load capability is unaffected by path and rotation.
Worm gear quickness reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or one enveloping wheel and are used in mechanical applications ranging from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary motion into intermittent rotary movement. The rotating drive wheel has a pin that gets to 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 may be accomplished through the use of adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are extremely quiet. This is due to the very smooth operating of the worm gear combined with the use of cast iron and high precision on component manufacturing and assembly. Regarding the our precision gearboxes, we consider extra treatment of any sound which can be interpreted as a murmur from the gear. 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 become a decisive advantage producing the incorporation of the gearbox significantly simpler and more compact.The worm gearbox can be an angle gear. This is an advantage for incorporation into constructions.
Strong bearings in solid housing
The output shaft of the BJ worm gearbox is quite firmly embedded in the gear house and is perfect for immediate suspension for wheels, movable arms and other parts rather than needing to build a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes provides a self-locking impact, which in many circumstances can be utilized as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them well suited for an array of solutions.
Structural Features
The worm-gear reducer comprises of three main parts: housing, worm-gear and wheel.
The carcasses are made of GG-25 cast-iron, and are available for all sorts of gear-reducer. This make them perform effectively under stressed circumstances, vibrations or any kind of setback that cannot 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. Due to the mechanical work of these two parts having top quality, excellent performance and low sound levels have been achived.
The output shaft is hollow, although it can be done to adapt a good shaft.
The oil seals manufactured from 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 best gear reducer out there.
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 is born like response to the ask for of our costumers since, upon mounting better bearings in the result, bears greater axial loads that its analogous one in the MF-62 series. The others of technical characteristic are similar to the its analogous in the size 62.
Assembly Position
In order to setup a gear reducer and to make it happen efficiently, the next instructions must be taken into account:
It should be fixed on a set surface to avoid either vibrations or tensions.
If undistributed loads or continued start-ups are foreseen, it is recommended to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer had to be painted, the essential oil seals should be covered to prevent them from drying and losing their seal.
The machine work of the fittings setup in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to focus on this aspect when the apparatus reducer output shaft is driven rather than being a driver. Bearing in mind that among the features of this worm-gear reducer may be the fact that cannot be axle-powered by the output shaft (irreversibility), it is almost not possible to meet up total irreversibility conditions, due to external elements such as vibrations, etc. For this reason, when the application form needs total irreversibility, it is advisable to make use of 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 (observe table of technical features).
Maintenance
This kind 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 continuous and comes as standard, with top quality refined oil which has antirust and antiwear products with Fe, Cu and alloy protectors that has level of quality CLP DIN 51517-3, FGZ level 12, AP GL-4, US 224, AGMA 250-04; for that reason its maintenance isn’t needed.

High reduction gear
Worm and wheel equipment pairings provide large swiftness decrease ratios with only one gear pairing in a far more compact space when compared with other types of gears. You can expect up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level noise they produce. Some drawbacks will be the general low efficiency 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 area has been achieved by work 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 top 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 area increases to around HB240 to 260.

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

4) Due to the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms provide a smooth operation and long term durability.

Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, 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 usually analogous to a spur gear. The worm is normally the driving 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 – 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 equipment by one tooth. So a gear with 24 teeth will provide 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 amount of starts on the worm. (That is different from most other types of gears, where in fact the gear reduction is definitely 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 actions causes friction and high temperature, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, high temperature), the worm and gear are made from dissimilar metals – for example, the worm could be produced of hardened steel and the apparatus made of bronze or aluminum.

Although the sliding contact decreases 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. Furthermore, the use of a softer materials for the gear means that it can absorb shock loads, like those experienced in heavy equipment or crushing devices.

The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as acceleration reducers in low- to medium-acceleration applications. And, because their reduction ratio is founded on the amount of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, which makes them well suited 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 velocity reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.

Because the effectiveness of a worm gear drive depends upon the business lead angle and amount of begins on the worm – and because increased performance is always an objective, the ratio should be kept only possible. To run properly, 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 Equipment 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 offer the 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, dual and quad start configurations