Ever-Power has been creating and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature right angle gearboxes provide high torque ideals with suprisingly low backlash in incredibly compact frames. Three gear ratios are available to meet the needs of your specific application.
Order the Ever-Power RW Series worm gear box assembly you need, ask for a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly may be small, but it’s challenging enough to handle demanding power transfer applications. Designed with machined light weight aluminum housings and hardened steel input and result gears, they’ll deliver many years 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 package assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with very 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
Very 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
Made in the China
Mechanical drives take supplied torque and may increase or reduce that torque predicated on application. Also swiftness is increased or decreased compared index G – Equipment BOXES – on blue – smallto the speed reduction ratio. Ever-Power includes a full line of gearboxes and acceleration reducers, and the parts had a need to build them, in an array of standard ratios and shaft options and also custom designs.
Helical, bevel, and miter equipment boxes offer the options of velocity reducers or acceleration increasers, and could be powered in either direction. All Ever-Power worm equipment speed reducers and right angle drives are manufactured for powerful in a large spectrum of applications. Typically worm equipment boxes aren’t used as rate increasers. The instances are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They can be found in a wide range of ratios and are equipped with right hands or left hands worm gears. The output shafts could be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear speed reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or one enveloping wheel and are found in mechanical applications which range from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary movement into intermittent rotary movement. The rotating drive wheel includes a pin that gets to right into a slot of the driven 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 typical gearboxes of the BJ-Series. Further optimisation can be achieved by using adapted gearboxes or special 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. Regarding the our precision gearboxes, we consider extra treatment of any sound which 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 frequently proves to become a decisive advantage producing the incorporation of the gearbox substantially simpler and more compact.The worm gearbox can be 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 quite firmly embedded in the apparatus house and is well suited for immediate suspension for wheels, movable arms and other areas rather than having 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 used as brake or as extra security. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them well suited for a wide range 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 so are available for all types of gear-reducer. This make sure they are perform effectively under stressed circumstances, 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 functionality and low sound levels have been achived.
The output shaft is hollow, although it is possible to adapt a good 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), provide the most competitive 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 offers like reference size 63 and exists like answer to the request 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 rest 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 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 must be covered to avoid them from drying and losing their seal.
The machine work of the fittings set up in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to pay attention to this factor when the gear reducer result shaft is driven rather than being a driver. Bearing in mind that one of the top features of this worm-equipment reducer may be the fact that can’t be axle-powered by the result shaft (irreversibility), it is almost impossible to meet total irreversibility conditions, because of external factors such as vibrations, etc. For this reason, when the application needs total irreversibility, it really is advisable to utilize exterior brakes with enough capacity to avoid slipping.
It could be said that the circumstances under which irreversibility can occur are the following:
• Efficiency < 0,55 (find table of specialized features).
Maintenance
This type of gear reducer will get a permanent lubrication, so it will not need any type of maintenance.
Lubrication
The lubrication of the gear reducer type is continuous and comes as standard, with high 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 is not needed.

High reduction gear
Worm and wheel equipment pairings provide large speed decrease ratios with only 1 equipment pairing in a more compact space when compared with other types of gears. We offer up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel gear pairings is the low level noise they produce. Some drawbacks are the general low efficiency and the fact that they generate temperature.

Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the frosty 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 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) Chilly rolled worms are ideal for miniature gear 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 method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Cold Rolled Worms provide a smooth procedure and long-term durability.

Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with non-parallel, nonintersecting shafts oriented 90 degrees to each other. The worm can be analogous to a screw with a V-type thread, and the apparatus is definitely analogous to a spur equipment. The worm is typically 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 – 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 equipment by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the amount of teeth on the gear, divided by the amount of begins on the worm. (That is different from almost every other types of gears, where the gear reduction is a function of the diameters of both 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 actions causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, high temperature), the worm and gear are made from dissimilar metals – for instance, the worm could be produced of hardened metal and the apparatus manufactured from bronze or aluminum.

Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The use 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 for example in elevators. In addition, the usage of a softer material for the gear implies that it could absorb shock loads, like those experienced in weighty equipment or crushing machines.

The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as swiftness reducers in low- to medium-acceleration applications. And, because their decrease ratio is based on the amount of gear teeth only, they are smaller sized than other styles of gears. Like fine-pitch business 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 transmission applications requiring high-ratio swiftness reduction in a restricted space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest form of gearing.

Because the performance of a worm equipment drive depends on the lead angle and amount of starts on the worm – and because increased effectiveness 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 Equipment 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 type 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.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations