Ever-Power has been developing and manufacturing reliable, high performance gearboxes for over twenty years. RW Series miniature right angle gearboxes provide high torque ideals with very low backlash in incredibly compact frames. Three gear ratios are available to meet the needs of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you need, request 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 hard enough to take care of demanding power transfer applications. Designed with machined aluminum housings and hardened steel input and output gears, they’ll deliver many years 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 for your needs. Each RW model worm gear package assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with very low backlash (maximum 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
Very 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 predicated on application. Also velocity 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 selection of standard ratios and shaft choices and also custom designs.
Helical, bevel, and miter gear boxes offer the options of rate reducers or rate increasers, and could be powered in either path. All Ever-Power worm equipment speed reducers and correct angle drives are manufactured for high performance in a large spectrum of applications. Typically worm equipment boxes aren’t used as quickness increasers. The instances are molded glass-filled material making them extremely durable and resistant to corrosive conditions. They can be found in a wide selection 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 acceleration reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or Worm Gear Box Assembly SINGLE enveloping wheel and 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 gets to into a slot of the driven wheel advancing it by one stage and a blocking disc that locks the powered wheel in position between steps.
Compact design
Compact design is among the key terms of the standard 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 really quiet. This is due to the very smooth running of the worm equipment combined with the usage of cast iron and high precision on component manufacturing and assembly. Regarding the our precision gearboxes, we take extra treatment of any sound that can be interpreted as a murmur from the gear. Therefore the general noise degree of our gearbox is definitely reduced to an absolute 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 considerably simpler and more compact.The worm gearbox is 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 ideal for direct suspension for wheels, movable arms and other parts rather than needing to build 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 used 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 constructed with 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 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 manufactured from 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 amounts have been achived.
The output shaft is hollow, although it can be done to adapt a good 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), supply 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 exists like answer to the request of our costumers since, upon mounting better bearings in the result, 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 setup a gear reducer and also to make it happen efficiently, the following instructions must be taken into account:
It must 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 gear 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 require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to pay attention to this factor when the apparatus reducer output shaft is driven instead of being a driver. Considering that one of the top features of this worm-gear reducer is the fact that cannot be axle-driven by the result shaft (irreversibility), it really is almost unattainable to meet up total irreversibility conditions, because of external elements such as vibrations, etc. This is why, when the application requires total irreversibility, it really is advisable to utilize exterior brakes with enough power to avoid slipping.
It could be said that the conditions under which irreversibility can happen are as follows:
• Efficiency < 0,55 (see table of technical features).
Maintenance
This kind of gear reducer will get a permanent lubrication, so it really does not need any type of maintenance.
Lubrication
The lubrication of this gear reducer type is constant and comes as standard, with top 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 isn’t needed.
High reduction gear
Worm and wheel gear pairings provide large quickness reduction ratios with only one gear pairing in a more compact space in comparison to other types of gears. We offer up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings is the low level noise they produce. Some disadvantages will be the general low efficiency and the fact that they generate temperature.
Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous structure has not been cut.
2) The surface hardness after frosty rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Chilly rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Because of the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like finish. Thus, EP-Precision Cold 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 is definitely analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is typically the traveling component, with the worm’s thread advancing the teeth of the gear.
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 equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the number 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 actions causes friction and temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, heat), the worm and gear 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 decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and equipment also plays a part in quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. Furthermore, the use of a softer materials for the gear implies that it can absorb shock loads, like those experienced in weighty equipment or crushing machines.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as velocity reducers in low- to medium-quickness applications. And, because their decrease ratio is founded on the number 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, which makes them ideal 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 swiftness reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends on the lead angle and number of starts on the worm – and because increased performance is always an objective, the ratio ought to be kept only 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 Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest type of gearing.
They provide high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing 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