Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature right angle gearboxes offer high torque values with very low backlash in incredibly compact frames. Three gear ratios are available to meet up the needs of your specific application.
Order the Ever-Power RW Series worm gear box assembly you will need, demand a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly could be small, but it’s challenging enough to handle demanding power transfer applications. Constructed with machined aluminum housings and hardened steel input and result gears, they’ll deliver a long time of reliable performance.
Available in three standard output ratios and with two output shaft diameter options, it’s simple to find the Ever-Power correct miniature gearbox for your needs. Each RW model worm gear container 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 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
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 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 decrease ratio. Ever-Power has a full type of gearboxes and rate reducers, and the components had a need to build them, in an array of standard ratios and shaft choices in addition to custom designs.
Helical, bevel, and miter gear boxes offer the options of quickness reducers or quickness increasers, and could be powered in either direction. All Ever-Power worm gear speed reducers and correct angle drives are manufactured for high performance in a large spectrum of applications. Typically worm equipment boxes aren’t used as speed increasers. The situations are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They are offered in a wide variety of ratios and are equipped with right hand or left hand worm gears. The output shafts could be solid or hollow, and load capability 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 are found in mechanical applications ranging from conveyors to workout devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary movement. The rotating drive wheel includes a pin that gets to into a slot of the driven wheel advancing it by one step and a blocking disc that locks the driven wheel in position between steps.
Compact design
Compact design is among the key phrases of the typical 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 extremely quiet. This is due to the very smooth running of the worm gear 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. So the general noise level of our gearbox is usually reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to each other. This often proves to become a decisive advantage producing the incorporation of the gearbox considerably simpler and smaller sized.The worm gearbox can be an angle gear. This is often an edge for incorporation into constructions.
Strong bearings in solid housing
The output shaft of the BJ worm gearbox is quite firmly embedded in the apparatus house and is perfect for direct suspension for wheels, movable arms and other parts rather than having to build a separate suspension.
Self locking
For larger gear 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 well suited for a wide range 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 so are available for all types of gear-reducer. This make them perform efficiently under stressed circumstances, vibrations or any type of setback that cannot be avoided through the assembly
The worm-gear is constructed 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 overall performance and low noise amounts have been achived.
The output shaft is hollow, although it is possible 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), provide the most competitive gear reducer in the marketplace.
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 is born like response to the request of our costumers since, upon mounting better bearings in the result, bears greater axial loads that its analogous one in the MF-62 series. The rest of technical feature are identical to the its analogous in the size 62.
Assembly Position
In order to setup a gear reducer and also 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 had to be painted, the oil seals must be covered to prevent them from drying and losing their seal.
The machine work of the fittings create in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to pay attention to this aspect when the apparatus reducer output shaft is driven rather than being a driver. Considering that among the top features of this worm-equipment reducer is the fact that can’t be axle-driven by the result shaft (irreversibility), it really is almost not possible to meet total irreversibility conditions, because of external elements such as for example vibrations, etc. That is why, when the application requires total irreversibility, it really is advisable to utilize exterior brakes with enough capacity to avoid slipping.
It may be said that the circumstances under which irreversibility can happen are as follows:
• Efficiency < 0,55 (discover table of technical features).
Maintenance
This type of gear reducer is provided with a permanent lubrication, so that it really does not need any type of maintenance.
Lubrication
The lubrication of the gear reducer type is constant and comes as standard, with high quality refined oil which has 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; because of this its maintenance is not needed.

High reduction gear
Worm and wheel equipment pairings provide large swiftness decrease ratios with only 1 equipment pairing in a far more compact space when compared with other types of gears. You can expect up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings may be the low level noise they produce. Some drawbacks are the general low effectiveness and the actual fact that they generate temperature.

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

2) The surface hardness after cold rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Frosty rolled worms are ideal for miniature gear applications since this is often 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 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 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 nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is usually analogous to a screw with a V-type thread, and the gear is certainly analogous to a spur equipment. The worm is typically the generating 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 an individual 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 gear by one tooth. Therefore a gear with 24 teeth will provide a gear reduction 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 most other types of gears, where the gear reduction is a function of the diameters of the two components.)
The meshing of the worm and the gear is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and high temperature, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and gear are constructed with dissimilar metals – for example, the worm could be made of hardened steel and the apparatus manufactured from bronze or aluminum.

Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears ideal for use where sound should be minimized, such as for example in elevators. Furthermore, the use of a softer materials for the gear means that it can absorb shock loads, like those experienced in heavy equipment or crushing devices.

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-velocity applications. And, because their reduction ratio is based on the amount of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them well suited for hoisting and lifting applications.

Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmitting applications requiring high-ratio speed reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the effectiveness of a worm gear drive depends upon the lead angle and amount of begins on the worm – and because increased performance is always an objective, the ratio should be kept as low as 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 can be ordered through the EP Equipment Guaranteed Same Time Shipment Program for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest type of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, double and quad start configurations