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June 10, 2020

Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque values 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 gear box assembly may be little, but it’s challenging enough to take care of demanding power transfer applications. Constructed with machined aluminum housings and hardened metal input and result gears, they’ll deliver many years of reliable performance.
Available in three standard result 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 ideals (1.4 NM at 3,000 RPM) with suprisingly low backlash (optimum 2° backlash).
For full specs 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 gear 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 optimum)
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 could 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 decrease ratio. Ever-Power has a full type of gearboxes and swiftness reducers, and the elements needed to build them, in a wide selection of regular ratios and shaft choices along with custom designs.
Helical, bevel, and miter gear boxes offer the options of rate reducers or speed increasers, and may be driven in either direction. All Ever-Power worm equipment speed reducers and right angle drives are produced for powerful in a large spectral range of applications. Typically worm gear boxes aren’t used as rate increasers. The cases are molded glass-filled material making them extremely durable and resistant to corrosive environments. They can be found in an array of ratios and are built with right hand or left hand worm gears. The result shafts could be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear rate reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or single enveloping wheel and so are found in mechanical applications which range from conveyors to exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel has a pin that gets to right into a slot of the powered wheel advancing it by one step and a blocking disc that locks the powered wheel constantly in place between steps.
Compact design
Compact design is among the key words 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 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 take extra care of any sound that can be interpreted as a murmur from the gear. Therefore 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 become a decisive advantage making the incorporation of the gearbox significantly simpler and smaller sized.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 well suited for direct suspension for wheels, movable arms and other areas 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 utilized as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them ideal for an array of solutions.
Structural Features
The worm-gear reducer is made up of three main parts: housing, worm-gear and wheel.
The carcasses are constructed with GG-25 cast-iron, and are available for all sorts of gear-reducer. This make sure they are perform effectively under stressed circumstances, vibrations or any kind of setback that cannot be avoided during the assembly
The worm-gear is made from 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. Due to the mechanical work of these two parts having high quality, excellent efficiency and low sound amounts have been achived.
The output shaft is hollow, although it is possible to adapt a solid shaft.
The oil seals made of 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 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 response to the request of our costumers since, upon mounting greater bearings in the result, 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 to make it happen efficiently, the next instructions must be taken into account:
It must be fixed on a flat 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 apparatus reducer had to be painted, the oil seals must be covered to avoid 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 smart to focus on this aspect when the apparatus reducer output shaft is driven rather than being a driver. Considering that among the top features of this worm-gear reducer is the fact that can’t be axle-powered by the output shaft (irreversibility), it really is almost unattainable to meet total irreversibility conditions, because of external elements such as for example vibrations, etc. That is why, when the application form needs total irreversibility, it is advisable to make use of external brakes with enough power to avoid slipping.
It could be said that the conditions under which irreversibility can occur are the following:
• Efficiency < 0,55 (discover table of specialized features).
Maintenance
This kind of gear reducer is provided with a permanent lubrication, so it really does not need any type of maintenance.
Lubrication
The lubrication of the gear reducer type is continuous and comes as standard, with top quality refined oil which includes antirust and antiwear products with Fe, Cu and alloy protectors which has quality level 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 gear pairings provide large velocity decrease ratios with only 1 gear pairing in a far more compact space when compared with other styles of gears. We offer up to a 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.

Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework has not been cut.

2) The surface hardness after frosty 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) Cool rolled worms are ideal for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.

4) Because of the implementation of this cold rolling technique, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Frosty Rolled Worms give a smooth operation and long-term durability.

Worm gears are constructed of a worm and a gear (sometimes known as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm can be analogous to a screw with a V-type thread, and the apparatus is analogous to a spur equipment. The worm is normally the traveling component, with the worm’s thread advancing one’s 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 full turn (360 degrees) of the worm advances the equipment by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the gear reduction equals the amount of teeth on the gear, 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 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 efficiency of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, heat), the worm and equipment are constructed with dissimilar metals – for instance, the worm may be made of hardened steel and the gear made of bronze or aluminum.

Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears ideal for use where noise 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 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 can also be used as speed reducers in low- to medium-quickness applications. And, because their decrease ratio is based on the amount of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually 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 transmission applications requiring high-ratio quickness reduction in a limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind of gearing.

Because the effectiveness of a worm equipment drive depends upon the lead angle and quantity of begins on the worm – and because increased performance is always a goal, the ratio ought to be kept as low as possible. To run correctly, worms and worm gears used together will need to have the same diametral pitch and threads.

Our complete type of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Day Shipment System for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest form of gearing.
They offer high-ratio speed decrease 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