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June 10, 2020

Ever-Power has been creating and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature right angle gearboxes offer high torque values with suprisingly 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, request a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be little, but it’s hard enough to handle demanding power transfer applications. Designed with machined aluminium housings and hardened steel 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 simple to find the Ever-Power right miniature gearbox for your needs. Each RW model worm gear box assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with very low backlash (optimum 2° backlash).
For full specifications and Dimensional Parametric Search, see individual product 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 metal gears and oil-impregnated bronze bearings
Permanently lubricated
Made in the China
Mechanical drives take supplied torque and could increase or reduce that torque predicated on application. Also acceleration 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 needed to build them, in a wide variety of regular ratios and shaft options as well as custom designs.
Helical, bevel, and miter equipment boxes offer the options of speed reducers or rate 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 spectrum of applications. Typically worm gear boxes aren’t used as velocity increasers. The instances are molded glass-filled materials making them extremely durable and resistant to corrosive environments. They are offered in an array of ratios and are built with right hands or left hands worm gears. The result shafts may be solid or hollow, and load capability 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 are used in mechanical applications ranging from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary movement into intermittent rotary motion. The rotating drive wheel includes 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 phrases of the standard gearboxes of the BJ-Series. Further optimisation can be achieved 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 gear combined with the use of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we take 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 each other. This frequently proves to be a decisive advantage producing the incorporation of the gearbox substantially simpler and smaller sized.The worm gearbox is an angle gear. This is an edge for incorporation into constructions.
Solid bearings in solid housing
The output shaft of the BJ worm gearbox is very firmly embedded in the apparatus house and is perfect 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 will provide a self-locking effect, which in many circumstances can be utilized as brake or as extra security. 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 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 type of setback that can’t be avoided during the assembly
The worm-gear is constructed 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. Due to the mechanical work of these two parts having high quality, excellent efficiency and low sound levels have been achived.
The output shaft is hollow, although it is possible to adapt a good 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 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 has like reference size 63 and is born like answer to the demand of our costumers since, upon mounting better bearings in the result, bears better axial loads that its analogous one in the MF-62 series. The others of technical feature are identical to the its analogous in the size 62.
Assembly Position
In order to setup a gear reducer and to make it happen efficiently, the following instructions must be considered:
It should be fixed on a set surface in order 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 should be covered to avoid them from drying and losing their seal.
The machine work of the fittings create in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to pay attention to this aspect when the apparatus reducer result shaft is driven instead of being a driver. Considering that one of the top features of this worm-equipment reducer is the fact that can’t 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. For this reason, when the application form requires total irreversibility, it is advisable to make use of exterior brakes with enough capacity to avoid slipping.
It may be said that the conditions under which irreversibility can happen are the following:
• Efficiency < 0,55 (find table of specialized features).
Maintenance
This kind 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; for that reason its maintenance isn’t needed.

High reduction gear
Worm and wheel equipment pairings provide large quickness reduction ratios with only 1 equipment pairing in a more compact space when compared with other types of gears. You can expect up to a maximum ratio of 100:1 with this 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 fact that they generate temperature.

Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms because of fact 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 in comparison to the hardness of the original material, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Chilly rolled worms are ideal for miniature gear applications since this is often rotated smoothly without damaging the worm wheels made out of POM or additional 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 complete. Thus, EP-Precision Cold Rolled Worms give a smooth procedure 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 gear is definitely analogous to a spur equipment. The worm is normally the driving component, with the worm’s thread advancing the teeth of the gear.

Such as 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 change (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-start worm, the gear reduction equals the amount of teeth on the gear, divided by the number of begins on the worm. (That is different from most other types of gears, where in fact the gear reduction is certainly 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 high temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, temperature), the worm and gear are made from dissimilar metals – for example, the worm could be made of hardened metal and the gear manufactured from 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 sound should be minimized, such as in elevators. In addition, the use of a softer materials for the gear implies that it could absorb shock loads, like those experienced in heavy equipment or crushing devices.

The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can 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 smaller sized than other types 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 a highly effective answer for power transmitting applications requiring high-ratio acceleration reduction in a limited space using correct 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 on the lead angle and amount of begins 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 type of worms and worm gears could be ordered through the EP Gear Guaranteed Same Time Shipment Plan for the fastest delivery possible.
Product Features
90°, nonintersecting 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 lowering ratios.
With some ratios, there is resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations