Ever-Power has 
been designing and manufacturing reliable, high performance gearboxes for over twenty 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 requirements of your specific application.
Order the Ever-Power RW Series worm gear box assembly you will need, demand a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment 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 metal input and result 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 very low backlash (optimum 2° backlash).
For full specifications 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 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 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 based on application. Also acceleration is increased or decreased in proportion index G – Equipment BOXES – on blue – smallto the speed reduction ratio. Ever-Power includes a full line of gearboxes and speed reducers, and the parts needed to build them, in an array of standard ratios and shaft choices and also custom designs.
Helical, bevel, and miter equipment boxes offer the options of rate reducers or swiftness increasers, and could be powered in either direction. All Ever-Power worm gear speed reducers and right angle drives are manufactured for high performance in a large spectral range of applications. Typically worm equipment boxes aren’t used as acceleration increasers. The cases are molded glass-filled materials making them extremely rugged and resistant to corrosive environments. They are offered in an array of ratios and are built with right hand or left hands worm gears. The output shafts may be solid or hollow, and load capacity is unaffected by direction and rotation.
Worm gear velocity 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 ranging from conveyors to exercise devices to robots.
Geneva mechanisms and assemblies are usually 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 driven wheel advancing it by one stage and a blocking disc that locks the driven wheel constantly in place between steps.
Compact design
Compact design is one of the key words 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 extremely quiet. This is because of the very smooth working of the worm equipment combined with the use of cast iron and high precision on component 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 gear. So the general noise degree of our gearbox is certainly 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 producing the incorporation of the gearbox substantially simpler and smaller sized.The worm gearbox can be 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 very firmly embedded in the gear house and is well suited for direct suspension for wheels, movable arms and other parts rather than having to build a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes will provide a self-locking impact, 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 perfect 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 from GG-25 cast-iron, and are available for all types of gear-reducer. This make sure they are perform efficiently under stressed circumstances, vibrations or any kind of setback that cannot be avoided through the assembly
The worm-gear is made 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 noise amounts have been achived.
The output shaft is hollow, although it can be done to adapt a solid 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 best 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 provides like reference size 63 and exists like answer to the ask for of our costumers since, upon mounting higher bearings in the output, bears better axial loads that its analogous one in the MF-62 series. The rest of technical characteristic are identical to the its analogous in the size 62.
Assembly Position
In order to create a gear reducer and also to make it happen efficiently, the next instructions must be taken into account:
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 suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer needed to be painted, the essential oil seals must be covered to prevent them from drying and losing their seal.
The device work of the fittings set up in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to focus on this aspect when the apparatus reducer result shaft is driven instead of being a driver. Bearing in mind that one of the features of this worm-equipment reducer may be the fact that cannot be axle-powered by the result shaft (irreversibility), it is almost unattainable to meet up total irreversibility conditions, because of external factors such as vibrations, etc. That is why, when the application requires total irreversibility, it really is advisable to make use of exterior brakes with enough power to avoid slipping.
It may be said that the conditions under which irreversibility can occur are the following:
• Efficiency < 0,55 (discover table of technical features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so that it does not need any kind of maintenance.
Lubrication
The lubrication of this gear reducer type is constant and comes as standard, with top quality refined oil which includes 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 isn’t needed.
High reduction gear
Worm and wheel equipment pairings provide large velocity reduction ratios with only 1 gear pairing in a more compact space in comparison to 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 sound they produce. Some drawbacks are the general low performance and the actual fact that they generate heat.
Benefit of EP’s Worm Gears – “Frosty 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 due to reality that the metallic fibrous framework has not been cut.
2) The top hardness after frosty 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 suitable for miniature gear applications since this is often 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 complete. Thus, EP-Precision Frosty Rolled Worms provide a smooth operation and long-term durability.
Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm is analogous to a screw with a V-type thread, and the gear is definitely analogous to a spur equipment. The worm is typically the generating 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 a single start or multiple starts – and therefore there are multiple threads, or helicies, on the worm. For a single-start worm, each complete switch (360 degrees) of the worm advances the gear by one tooth. So a gear with 24 teeth will provide a gear reduction 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. (This is different from most other types of gears, where the gear reduction is definitely 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 action causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, warmth), the worm and equipment are made of dissimilar metals – for example, the worm may be produced of hardened steel and the apparatus manufactured from bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. In addition, the utilization of a softer materials for the gear means that it could absorb shock loads, like those skilled in large equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as quickness reducers in low- to medium-speed 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 business lead screws, worm gears are typically self-locking, making 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 limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest type of gearing.
Because the effectiveness of a worm equipment drive depends on the business lead angle and number of starts on the worm – and because increased performance is always a goal, the ratio should be kept only possible. To run properly, worms and worm gears used 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 Equipment Guaranteed Same Day Shipment Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power tranny needs.
Our worm gears offer the smoothest, quietest type of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double and quad start configurations