Ever-Power has been creating and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature right angle gearboxes provide high torque values with very low backlash in incredibly compact frames. Three gear ratios are available to meet up the requirements of your unique application.
Order the Ever-Power RW Series worm gear box assembly you will need, ask for a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly could be small, but it’s difficult enough to handle demanding power transfer applications. Constructed with machined aluminium housings and hardened metal input and output gears, they’ll deliver a long time of reliable performance.
Obtainable in three standard result ratios and with two output shaft diameter options, it’s easy to find the Ever-Power correct 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 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 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 maximum)
90° output angle
Maximum input speed: 3,000 RPM
Machined aluminum housing 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 velocity is increased or reduced in proportion index G – Equipment BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a full line of gearboxes and speed reducers, and the elements had a need to build them, in a wide variety of regular ratios and shaft choices and also custom designs.
Helical, bevel, and miter gear boxes offer the options of speed reducers or acceleration increasers, and may be powered in either path. All Ever-Power worm equipment speed reducers and correct angle drives are produced for powerful in a large spectrum of applications. Typically worm equipment boxes aren’t used as acceleration increasers. The situations are molded glass-filled materials making them extremely durable and resistant to corrosive conditions. They are offered in an array of ratios and are built with right hand or left hand worm gears. The result shafts may be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear velocity reducers are made up of a screw (the worm) that drives a wheel (helical gear) or solitary enveloping wheel and are found in mechanical applications which range from conveyors to workout devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary movement into intermittent rotary movement. The rotating drive wheel has 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 words of the standard gearboxes of the BJ-Series. Further optimisation can be achieved through the use of adapted gearboxes or unique gearboxes.
Low noise
Our worm gearboxes and actuators are extremely quiet. This is due to the very smooth working of the worm gear combined with the utilization of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we consider extra treatment of any sound which can be interpreted as a murmur from the apparatus. So the general noise degree of our gearbox is definitely reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to each other. This frequently proves to become a decisive advantage producing the incorporation of the gearbox significantly 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 very firmly embedded in the apparatus house and is well suited for direct suspension for wheels, movable arms and other areas rather than needing 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 used as brake or as extra security. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them perfect for a wide variety 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 efficiently under stressed circumstances, vibrations or any type 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. Due to 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 can be done 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), supply 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 has like reference size 63 and is born like response to the demand of our costumers since, upon mounting higher bearings in the output, bears greater 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 also to make it work 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 recommended to insert compensating couplings, connectors, torque limiters etc…
If the gear reducer needed to be painted, the essential oil seals should be covered to prevent 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 element when the gear reducer output shaft is driven instead of being a driver. Considering that among the features of this worm-equipment reducer may be the fact that cannot be axle-powered by the output shaft (irreversibility), it really is almost impossible to meet up total irreversibility conditions, due to external factors such as vibrations, etc. For this reason, when the application needs total irreversibility, it is advisable to utilize 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 (discover table of specialized features).
Maintenance
This kind of gear reducer is provided with a permanent lubrication, so that it really does not need any kind of maintenance.
Lubrication
The lubrication of this 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 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 gear pairings provide large speed reduction ratios with only one equipment pairing in a more compact space when compared with other types of gears. We offer 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 sound they produce. Some disadvantages are the general low effectiveness and the fact that they generate heat.

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

2) The top hardness after cool rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the initial material, and the hardness of the helicoid surface 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 crafted from POM or various other soft materials.

4) Because of the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. 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, non-intersecting shafts oriented 90 degrees to each other. The worm is analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.

Like 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 full switch (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-start worm, the apparatus reduction equals the amount of teeth on the apparatus, divided by the amount of begins on the worm. (That is not the same as most other types of gears, where in fact the gear reduction can be 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 action causes friction and warmth, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, warmth), the worm and gear are constructed with dissimilar metals – for instance, the worm could be produced of hardened metal and the apparatus made of 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 noise should be minimized, such as in elevators. In addition, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in heavy equipment or crushing machines.

The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as quickness reducers in low- to moderate-speed applications. And, because their decrease ratio is founded on the amount of gear teeth alone, they are smaller sized than other styles of gears. Like fine-pitch business lead screws, worm gears are usually 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 tranny applications requiring high-ratio rate 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 efficiency of a worm gear drive depends upon the lead angle and amount of starts on the worm – and because increased efficiency is always a goal, the ratio should be kept only possible. To run correctly, worms and worm gears utilized together will need to have the same diametral pitch and threads.

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