Select Page

Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature right angle gearboxes offer high torque ideals with suprisingly low backlash in incredibly compact frames. Three equipment ratios are available to meet up the needs of your specific application.
Order the Ever-Power RW Series worm gear box assembly you need, request a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly could be small, but it’s difficult enough to handle demanding power transfer applications. Designed with machined aluminium housings and hardened steel input and output gears, they’ll deliver a long time of reliable performance.
Available 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 gear 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 product listings.
The Ever-Power Advantage
High efficiency miniature correct 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 could increase or reduce that torque predicated on application. Also velocity is increased or reduced compared index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full line of gearboxes and rate reducers, and the elements needed to build them, in a wide selection of regular ratios and shaft options and also custom designs.
Helical, bevel, and miter gear boxes offer the options of acceleration reducers or quickness increasers, and could be powered in either direction. All Ever-Power worm equipment speed reducers and right angle drives are produced for high performance in a large spectrum of applications. Typically worm equipment boxes are not used as acceleration increasers. The instances are molded glass-filled material making them extremely durable and resistant to corrosive conditions. They are offered in an array of ratios and are equipped with right hand or left hands worm gears. The result shafts may be solid or hollow, and load capacity is unaffected by direction and rotation.
Worm gear rate reducers are made up of a screw (the worm) that drives a wheel (helical gear) or one enveloping wheel and so are used in mechanical applications ranging from conveyors to exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary movement. The rotating drive wheel includes a pin that reaches right 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 words of the typical gearboxes of the BJ-Series. Further optimisation may be accomplished through the use of adapted gearboxes or unique 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 usage of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we take extra care of any sound which can be interpreted as a murmur from the apparatus. So 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 become a decisive advantage making the incorporation of the gearbox substantially simpler and more compact.The worm gearbox is an angle gear. This is often 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 gear house and is perfect for immediate suspension for wheels, movable arms and other areas 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 used 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 is made up of three main parts: housing, worm-gear and wheel.
The carcasses are made from GG-25 cast-iron, and so are available for all kinds of gear-reducer. This make sure they are perform efficiently under stressed conditions, vibrations or any kind of setback that cannot be avoided during the assembly
The worm-gear is made 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 high quality, excellent performance and low sound levels have been achived.
The output shaft is hollow, although it is possible 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), supply the most competitive gear reducer in the marketplace.
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 offers like reference size 63 and is born like answer to the ask for of our costumers since, upon mounting better bearings in the output, bears higher axial loads that its analogous one in the MF-62 series. The rest of technical characteristic are similar to the its analogous in the size 62.
Assembly Position
In order to create a gear reducer and to make it happen efficiently, the following 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 essential oil seals should be covered to prevent them from drying and losing their seal.
The device work of the fittings create in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to pay attention to this element when the apparatus reducer result shaft is driven rather than being a driver. Bearing in mind that among the features of this worm-equipment reducer is the fact that can’t be axle-powered by the output shaft (irreversibility), it 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 requires total irreversibility, it is advisable to make use of exterior brakes with enough power to avoid slipping.
It may be said that the circumstances under which irreversibility can occur are the following:
• Efficiency < 0,55 (see table of specialized features).
Maintenance
This kind of gear reducer will get a permanent lubrication, so that it will not need any type 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 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 equipment pairings provide large velocity reduction ratios with only 1 gear pairing in a far more compact space when compared with other types of gears. You can expect up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some drawbacks are the general low efficiency and the fact that they generate warmth.

Benefit of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous structure is not cut.

2) The surface 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 increases to around HB240 to 260.

3) Frosty rolled worms are suitable for miniature equipment applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.

4) Because of 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 give a smooth procedure and long term durability.

Worm gears are made of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the apparatus is analogous to a spur equipment. The worm is normally the driving component, with the worm’s thread advancing the teeth of the gear.

Just like a ball screw, the worm in a worm gear may 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 convert (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (That is not the same as most other types of gears, where in fact the gear reduction is usually a function of the diameters of the two components.)
The meshing of the worm and the apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and warmth, which limits the efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, temperature), the worm and equipment are made of dissimilar metals – for example, the worm may be made of hardened steel and the apparatus manufactured from bronze or aluminum.

Although the sliding contact reduces efficiency, it provides extremely 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 noise 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 skilled in heavy equipment or crushing machines.

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 quickness reducers in low- to moderate-rate applications. And, because their decrease ratio is founded on the number of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes them perfect 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 used, worms and worm gears supply the smoothest, quietest kind of gearing.

Because the efficiency of a worm gear drive depends upon the business lead angle and amount of starts on the worm – and because increased efficiency is always an objective, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.

Our complete type of worms and worm gears can be ordered through the EP Gear Guaranteed Same Day time Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power tranny needs.
Our worm gears provide smoothest, quietest form 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.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations