Ever-Power has been creating and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque ideals with very low backlash in incredibly compact frames. Three equipment ratios are available to meet the needs of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will need, demand a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly could be small, but it’s hard enough to handle demanding power transfer applications. Designed with machined aluminium housings and hardened metal 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 easy to find the Ever-Power correct miniature gearbox to your requirements. Each RW model worm equipment box 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 item 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 optimum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum housing 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 rate is increased or reduced in proportion index G – Equipment BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full line of gearboxes and quickness 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 provide options of velocity reducers or velocity increasers, and could be powered in either path. All Ever-Power worm gear speed reducers and right angle drives are produced for high performance in a large spectral range of applications. Typically worm gear boxes are not used as quickness increasers. The cases are molded glass-filled material making them extremely rugged and resistant to corrosive environments. They can be found in a wide selection of ratios and are built with right hand 
or left hands worm gears. The result shafts could be solid or hollow, and load capacity is unaffected by direction and rotation.
Worm gear quickness reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or one enveloping wheel and so are used in mechanical applications which range from conveyors to physical 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 reaches right 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 by using adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is due to the very smooth working of the worm gear combined with the use of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we consider extra care 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 making the incorporation of the gearbox significantly simpler and more compact.The worm gearbox can be an angle gear. This is often an edge for incorporation into constructions.
Solid 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 parts Worm Gear Box Assembly rather than having 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 circumstances can be utilized as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them ideal for a wide variety of solutions.
Structural Features
The worm-gear reducer is made up 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 effectively under stressed conditions, vibrations or any kind of setback that can’t be avoided during 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 high quality, excellent functionality and low sound levels have been achived.
The output shaft is hollow, though it can be done to adapt a solid 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 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 has like reference size 63 and is born like answer to the ask for of our costumers since, upon mounting greater bearings in the result, bears higher 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 create a gear reducer and to make it happen efficiently, the next instructions must be considered:
It should be fixed on a flat 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 apparatus reducer had 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 need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to pay attention to this element when the gear reducer output shaft is driven instead of being a driver. Considering that one of the features of this worm-equipment reducer is the fact that cannot be axle-driven by the result shaft (irreversibility), it is almost unattainable to meet up total irreversibility conditions, because of external factors such as for example vibrations, etc. For this reason, when the application needs total irreversibility, it really is advisable to make use of external brakes with enough power to avoid slipping.
It could be said that the circumstances under which irreversibility can occur are as follows:
• Efficiency < 0,55 (discover table of technical features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so it really 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 quality level 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 velocity decrease ratios with only 1 equipment pairing in a more compact space when compared with other styles of gears. We offer up to maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings is the low level noise they produce. Some disadvantages will be the general low performance and the actual fact that they generate temperature.
Benefit of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth 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 when compared with the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cold rolled worms are ideal 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) Because of 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 Frosty Rolled Worms provide a smooth procedure and long term durability.
Worm gears are made of a worm and a gear (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the gear is certainly analogous to a spur gear. The worm is typically the driving 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 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 gear by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (This is different from almost every other types of gears, where in fact the gear reduction is certainly 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 actions causes friction and heat, which limits the efficiency 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 metal and the apparatus made of 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 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 skilled in heavy 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 used as acceleration reducers in low- to medium-rate applications. And, because their decrease ratio is founded on the number of gear teeth only, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes 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 acceleration reduction in a restricted space using correct angle (90°), non-intersecting 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 lead angle and amount of begins on the worm – and because increased performance is always a goal, the ratio should be kept as low as possible. To run properly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day Shipment System for the fastest 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 offer 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, double and quad start configurations