Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature correct angle gearboxes provide high torque values with very low backlash in extremely compact frames. Three gear ratios are available to meet up the requirements of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will need, demand a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly may be small, but it’s hard enough to take care of 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 output ratios and with two result shaft diameter options, it’s easy to find the Ever-Power right miniature gearbox for your needs. Each RW model worm equipment container assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with suprisingly 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
Very low backlash (2° backlash optimum)
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 could increase or reduce that torque based on application. Also swiftness is increased or decreased compared index G – Equipment BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full line of gearboxes and rate reducers, and the parts had a need to build them, in an array of standard ratios and shaft options along with custom designs.
Helical, bevel, and miter equipment boxes offer the options of acceleration reducers or quickness increasers, and may be powered in either direction. All Ever-Power worm gear speed reducers and right angle drives are manufactured for high performance in a large spectrum of applications. Typically worm gear boxes are not used as swiftness increasers. The cases are molded glass-filled material making them extremely durable 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 result shafts may be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear rate 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 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 powered wheel advancing it by one step and a blocking disc that locks the driven wheel constantly in place between steps.
Compact design
Compact design is one of the key terms of the standard gearboxes of the BJ-Series. Further optimisation may be accomplished through the use of adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is because of the very smooth running of the worm equipment combined with the use of cast iron and high precision on component manufacturing and assembly. Regarding the our precision gearboxes, we consider extra treatment of any sound that can be interpreted as a murmur from the apparatus. So the general noise degree of our gearbox is reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to one another. This often proves to be a decisive advantage making the incorporation of the gearbox significantly simpler and smaller sized.The worm gearbox can be 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 very firmly embedded in the gear house and is ideal for immediate suspension for wheels, movable arms and other parts rather than needing to create a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes provides a self-locking effect, which in many circumstances 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 types of gear-reducer. This make them perform effectively 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 made of DIN (GZ-CuSn 12 Ni2) centricast bronze, melted on steel. Because of the mechanical work of these two parts having top quality, excellent overall performance and low noise amounts 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, 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 has 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 greater axial loads that its analogous one in the MF-62 series. The rest of technical feature are similar to the its analogous in the size 62.
Assembly Position
In order to set up 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 suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer needed to be painted, the oil seals should be covered to avoid 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 smart to focus on this aspect when the gear reducer result shaft is driven instead of being a driver. Considering 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 difficult to meet up total irreversibility conditions, due to external elements such as for example vibrations, etc. This is why, when the application requires total irreversibility, it is advisable to utilize exterior brakes with enough capacity to avoid slipping.
It may be said that the conditions under which irreversibility can occur are as follows:
• Efficiency < 0,55 (find table of technical features).
Maintenance
This kind of gear reducer will get a permanent lubrication, so it will not need any kind of maintenance.
Lubrication
The lubrication of this 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 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 rate reduction ratios with only one gear pairing in a far more compact space in comparison to other styles of gears. We offer up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings may be the low level sound they produce. Some disadvantages will be the general low performance and the actual fact that they generate heat.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by function hardening when the frosty 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 cold rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the original material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are suitable for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels made out of POM or various other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Cold Rolled Worms give a smooth operation and long-term durability.
Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is definitely analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur equipment. The worm is typically the driving component, with the worm’s thread advancing one’s teeth of the gear.
Such as 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 full convert (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-start worm, the gear reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (That is different from most other types of gears, where the gear reduction can be 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 effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and equipment are made from 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 utilization of dissimilar metals for the worm and gear also contributes to quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as in elevators. Furthermore, the use of a softer materials for the gear implies that it could absorb shock loads, like those experienced in large equipment or crushing machines.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as speed reducers in low- to moderate-velocity applications. And, because their decrease ratio is based on the amount of gear teeth by itself, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are usually 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 transmitting applications requiring high-ratio rate reduction in a limited space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.
Because the effectiveness of a worm equipment drive depends upon the lead angle and quantity 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 will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Day time Shipment Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest kind of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing 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