Ever-Power has been designing and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque ideals with suprisingly low backlash in extremely compact frames. Three gear ratios are available to meet up the needs of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will need, ask for a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly may be little, but it’s challenging enough to handle demanding power transfer applications. Designed with machined light weight aluminum housings and hardened metal input and output gears, they’ll deliver many years of reliable performance.
Obtainable in three standard output 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 package assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with suprisingly low backlash (optimum 2° backlash).
For full specifications 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 maximum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum casing with hardened steel 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 swiftness is increased or decreased in proportion index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full type of gearboxes and acceleration reducers, and the elements needed to build them, in a wide range of standard ratios and shaft options along with custom designs.
Helical, bevel, and miter gear boxes provide options of acceleration reducers or swiftness increasers, and could be driven 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 quickness increasers. The cases are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They are offered in a wide selection of ratios and are equipped with right hand or left hands worm gears. The output shafts could be solid or hollow, and load capacity is unaffected by direction and rotation.
Worm gear quickness 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 exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel has a pin that reaches right into a slot of the powered wheel advancing it by one step and a blocking disc that locks the driven wheel in position between steps.
Compact design
Compact design is among the key terms of the standard gearboxes of the BJ-Series. Further optimisation can be achieved through the use of adapted gearboxes or special gearboxes.
Low noise
Our worm gearboxes and actuators are extremely quiet. This is due to the very smooth running 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. So the general noise degree of our gearbox is definitely 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 making the incorporation of the gearbox substantially simpler and more compact.The worm gearbox is 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 ideal for direct suspension for wheels, movable arms and other areas rather than having to create a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes will provide a self-locking effect, which in many situations 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 so are available for all sorts of gear-reducer. This make sure they are perform efficiently under stressed conditions, vibrations or any type 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 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 efficiency and low noise levels have been achived.
The output shaft is hollow, though it can be done to adapt a solid shaft.
The oil seals made of NITRILE BUTADIENE, according to DIN 3760, high 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 offers like reference size 63 and is born like answer to the request of our costumers since, upon mounting greater bearings in the output, bears better 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 create a gear reducer and also to make it work efficiently, the following instructions must be taken into account:
It must be fixed on a set 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 gear reducer had to be painted, the 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 wise to pay attention to this aspect when the apparatus reducer output shaft is driven rather than being a driver. Considering that one of the top features of this worm-gear reducer may be the fact that cannot be axle-powered by the output shaft (irreversibility), it is almost impossible 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 really is advisable to make use of external brakes with enough capacity to avoid slipping.
It may be said that the circumstances under which irreversibility can happen are as follows:
• Efficiency < 0,55 (discover table of specialized features).
Maintenance
This type of gear reducer is provided with a permanent lubrication, so that it does not need any type 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 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 is not needed.

High reduction gear
Worm and wheel equipment pairings provide large velocity reduction ratios with only 1 gear pairing in a more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel gear pairings may be the low level noise they produce. Some disadvantages will be the general low performance and the fact that they generate warmth.

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

2) The top hardness after chilly 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) Cool rolled worms are ideal for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels made out of POM or additional 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 Frosty Rolled Worms provide a smooth procedure and long-term durability.

Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, nonintersecting 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 gear. The worm is typically 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 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 turn (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 apparatus, divided by the number of begins on the worm. (That is different from most 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 apparatus is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and warmth, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, temperature), the worm and equipment are constructed with dissimilar metals – for instance, the worm may be produced of hardened steel 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 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 material 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 can also be utilized as acceleration reducers in low- to moderate-velocity applications. And, because their decrease ratio is founded on the amount of gear teeth by itself, they are smaller sized than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes them ideal 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 velocity reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest form of gearing.

Because the performance of a worm equipment drive depends on the lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio ought to be kept only possible. To run properly, worms and worm gears utilized together will need to 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 Program 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 offer high-ratio speed reduction 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, double and quad start configurations