Ever-Power has been developing and manufacturing reliable, high performance gearboxes for over twenty years. RW Series miniature right angle gearboxes offer high torque ideals with very low backlash in incredibly 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 need, ask for a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly could be little, but it’s tough enough to take care of demanding power transfer applications. Constructed with machined aluminium housings and hardened steel input and result gears, they’ll deliver a long 
time of reliable performance.
Obtainable in three standard output ratios and with two result shaft diameter options, it’s simple to find the Ever-Power correct miniature gearbox to your requirements. 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 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
Very low backlash (2° backlash maximum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum housing 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 speed is increased or reduced compared index G – GEAR BOXES – on blue – smallto the speed reduction ratio. Ever-Power includes a full line of gearboxes and velocity reducers, and the parts had a need to build them, in an array of standard ratios and shaft choices in addition to custom designs.
Helical, bevel, and miter gear boxes provide options of quickness reducers or rate increasers, and could be driven in either path. All Ever-Power worm gear speed reducers and correct angle drives are manufactured for high performance in a large spectrum of applications. Typically worm equipment boxes are not used as swiftness increasers. The instances are molded glass-filled materials making them extremely tough and resistant to corrosive conditions. They can be found in a wide range of ratios and are built with right hands or left hands worm gears. The result shafts may be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear quickness reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or solitary enveloping wheel and so are used in mechanical applications which range from conveyors to workout devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel includes 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 terms of the standard gearboxes of the BJ-Series. Further optimisation can be achieved through the use of adapted gearboxes or unique gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is because of the very smooth operating of the worm gear combined with the use of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we consider extra treatment of any sound which can be interpreted as a murmur from the apparatus. So the general noise level of our gearbox can be reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to each other. This frequently proves to be a decisive advantage producing the incorporation of the gearbox considerably simpler and smaller sized.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 apparatus house and is ideal for immediate suspension for wheels, movable arms and other areas rather than having to build a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes provides a self-locking impact, which in many situations 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 range 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 them perform efficiently under stressed conditions, vibrations or any type 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. Because of the mechanical work of these two parts having top quality, excellent performance and low sound levels have been achived.
The output shaft is hollow, though it can be done to adapt a good shaft.
The oil seals manufactured from 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 most competitive gear reducer available.
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 exists like answer to the demand 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 feature are similar 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 set surface 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 needed 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 setup in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to pay attention to this element when the apparatus reducer result shaft is driven rather than being a driver. Bearing in mind that one of the top features of this worm-equipment reducer may be the fact that cannot be axle-driven by the result shaft (irreversibility), it is almost extremely hard to meet up total irreversibility conditions, due to 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 may be said that the circumstances under which irreversibility can occur are as follows:
• Efficiency < 0,55 (see table of specialized features).
Maintenance
This type of gear reducer will get a permanent lubrication, so that it does not need any type of maintenance.
Lubrication
The lubrication of the 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 that 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 equipment pairings provide large acceleration reduction ratios with only 1 equipment pairing in a more compact space in comparison to other types of gears. You can expect up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings may be the low level noise they produce. Some disadvantages will be the general low efficiency and the actual fact that they generate warmth.
Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact that the metallic fibrous framework is not cut.
2) The top hardness after cold rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the initial materials, 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 is often rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Chilly Rolled Worms provide 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 non-parallel, 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 definitely analogous to a spur gear. The worm is typically 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 might have an individual start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each complete change (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth will provide 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 begins on the worm. (That is not the same as almost every other types of gears, where the gear reduction is definitely a function of the diameters of both 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 performance of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, temperature), the worm and equipment are made of dissimilar metals – for instance, the worm could be made of hardened steel and the gear manufactured from 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 noise should be minimized, such as in elevators. In addition, the use of a softer material for the gear implies that it could absorb shock loads, like those skilled in weighty equipment or crushing devices.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as acceleration reducers in low- to moderate-velocity applications. And, because their reduction ratio is founded on the amount of gear teeth alone, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making 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 rate reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.
Because the efficiency of a worm gear drive depends upon the business lead angle and number of starts on the worm – and because increased efficiency is always an objective, the ratio should 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 line of worms and worm gears can be ordered through the EP Gear Guaranteed Same Time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest type of gearing.
They provide high-ratio speed decrease 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, dual and quad start configurations