Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature right angle gearboxes provide high torque ideals with very low backlash in extremely compact frames. Three equipment ratios are available to meet up the needs of your unique application.
Order the Ever-Power RW Series worm gear box assembly you will need, ask for a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be small, but it’s difficult enough to handle demanding power transfer applications. Constructed with machined light weight aluminum housings and hardened steel input and output gears, they’ll deliver many years of reliable performance.
Obtainable in three standard result ratios and with two output shaft diameter options, it’s easy to find the Ever-Power correct miniature gearbox to your requirements. Each RW model worm equipment container assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with suprisingly low backlash (optimum 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 gear 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
Manufactured in the China
Mechanical drives take supplied torque and may increase or reduce that torque predicated on application. Also acceleration is increased or reduced compared index G – Equipment BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a full line of gearboxes and rate reducers, and the components needed to build them, in an array of regular ratios and shaft choices along with custom designs.
Helical, bevel, and miter equipment boxes offer the options of rate reducers or velocity increasers, and could be powered in either path. All Ever-Power worm gear speed reducers and correct angle drives are produced for powerful in a large spectral range of applications. Typically worm equipment boxes aren’t used as velocity increasers. The cases are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They can be found in an array of ratios and are built with right hand or left hands worm gears. The output shafts could be solid or hollow, and load capability is unaffected by path and rotation.
Worm gear quickness reducers are made up of a screw (the worm) that drives a wheel (helical gear) or single enveloping wheel and so are found in mechanical applications ranging from conveyors to exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary movement into intermittent rotary movement. 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 among the key phrases of the standard gearboxes of the BJ-Series. Further optimisation can be achieved by using adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is because of the very smooth working of the worm equipment combined with the use of cast iron and high precision on element manufacturing and assembly. Regarding the our precision gearboxes, we take extra treatment of any sound which can be interpreted as a murmur from the apparatus. Therefore the general noise degree of our gearbox can be reduced to an absolute minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to one another. This often proves to be a decisive advantage producing the incorporation of the gearbox substantially simpler and more compact.The worm gearbox can be an angle gear. This is an edge for incorporation into constructions.
Strong bearings in solid housing
The output shaft of the BJ worm gearbox is quite firmly embedded in the apparatus house and is perfect for immediate suspension for wheels, movable arms and other parts rather than having to create a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes will provide a self-locking effect, which in many situations 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 selection 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 so are available for all kinds of gear-reducer. This make them perform efficiently under stressed conditions, vibrations or any kind of setback that can’t be avoided through the assembly
The worm-gear is constructed of hardened and quench-hardened steel, with ground- on teeth sides, and the crowns made of DIN (GZ-CuSn 12 Ni2) centricast bronze, melted on steel. Due to the mechanical work of the two parts having top quality, excellent efficiency and low noise levels have been achived.
The output shaft is hollow, although it is possible 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 most competitive gear reducer on the market.
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 has like reference size 63 and is born like response to the demand of our costumers since, upon mounting better bearings in the output, bears better axial loads that its analogous one in the MF-62 series. The others of technical feature are identical to the its analogous in the size 62.
Assembly Position
In order to set up a gear reducer and also to make it work efficiently, the next instructions must be considered:
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 recommended to insert compensating couplings, connectors, torque limiters etc…
If the gear reducer had to be painted, the oil seals must be covered to prevent them from drying and losing their seal.
The machine work of the fittings create in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to focus on this aspect when the gear reducer result shaft is driven instead of being a driver. Considering that among the features of this worm-gear reducer is the fact that can’t be axle-driven by the output shaft (irreversibility), it really is almost impossible to meet up total irreversibility conditions, because of external elements such as for example vibrations, etc. That is why, when the application needs total irreversibility, it really is advisable to utilize external brakes with enough capacity to avoid slipping.
It could be said that the circumstances under which irreversibility can happen are the following:
• Efficiency < 0,55 (find table of specialized features).
Maintenance
This type of gear reducer is provided with a permanent lubrication, so it will not need any kind of maintenance.
Lubrication
The lubrication of this gear reducer type is constant and comes as standard, with high quality refined oil which has antirust and antiwear products with Fe, Cu and alloy protectors which has level of quality CLP DIN 51517-3, FGZ level 12, AP GL-4, US 224, AGMA 250-04; because of this its maintenance is not needed.

High reduction gear
Worm and wheel gear pairings provide large rate reduction ratios with only 1 gear pairing in a far more compact space in comparison to other types 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 noise they produce. Some disadvantages are the general low performance and the fact that they generate high temperature.

Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface 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 structure has not been cut.

2) The top hardness after cool rolling is increased by 1.2 to 1 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) Frosty rolled worms are suitable for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.

4) Due to the implementation of this 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 Frosty Rolled Worms provide a smooth procedure and long-term durability.

Worm gears are made of a worm and a equipment (sometimes known 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 generating component, with the worm’s thread advancing one’s teeth of the gear.

Just 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 switch (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 gear, divided by the number of begins on the worm. (That is different from almost every other types of gears, where the gear reduction can be 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 actions causes friction and temperature, which limits the effectiveness 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 apparatus made of bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. In addition, the use of a softer materials for the gear implies that it could absorb shock loads, like those skilled 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 can also be utilized as acceleration reducers in low- to moderate-swiftness applications. And, because their decrease ratio is founded on the number of gear teeth by itself, they are more compact than other types 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 transmitting applications requiring high-ratio speed reduction in a restricted space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest form of gearing.

Because the effectiveness of a worm gear drive depends on the lead angle and quantity of begins on the worm – and because increased efficiency is always an objective, the ratio ought to be kept only possible. To run properly, 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 time Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer 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, dual and quad start configurations