Ever-Power has been creating and manufacturing reliable, powerful 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 up the requirements 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 tough enough to take care of demanding power transfer applications. Constructed with machined light weight aluminum 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 result shaft diameter options, it’s simple to find the Ever-Power correct miniature gearbox for your needs. Each RW model worm equipment box assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with very low backlash (maximum 2° backlash).
For full specs and Dimensional Parametric Search, see individual item listings.
The Ever-Power Advantage
High efficiency miniature right 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 steel gears and oil-impregnated bronze bearings
Permanently lubricated
Made in the China
Mechanical drives take supplied torque and could increase or reduce that torque based on application. Also velocity is increased or decreased in proportion index G – Equipment BOXES – on blue – smallto the speed reduction ratio. Ever-Power has a full line of gearboxes and speed reducers, and the parts had a need to build them, in a wide selection of standard ratios and shaft choices along with custom designs.
Helical, bevel, and miter equipment boxes offer the options of speed reducers or quickness increasers, and may be powered in either path. All Ever-Power worm gear speed reducers and correct angle drives are produced for high performance in a large spectral range of applications. Typically worm equipment boxes are not used as speed increasers. The situations are molded glass-filled material 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 output 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 found in mechanical applications ranging 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 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 powered wheel constantly in place between steps.
Compact design
Compact design is among the key terms of the standard gearboxes of the BJ-Series. Further optimisation can be achieved by using adapted gearboxes or unique 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 usage of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we consider extra treatment of any sound that can be interpreted as a murmur from the gear. Therefore the general noise degree of our gearbox is usually 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 advantage for incorporation into constructions.
Strong bearings in solid housing
The output shaft of the BJ worm gearbox is very firmly embedded in the gear house and is perfect for direct suspension for wheels, movable arms and other parts rather than needing to create a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes provides a self-locking impact, which in many situations can be utilized 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 is made up of three main parts: housing, worm-gear and wheel.
The carcasses are made of GG-25 cast-iron, and are available for all sorts of gear-reducer. This make them perform efficiently under stressed circumstances, vibrations or any kind of setback that can’t be avoided through the assembly
The worm-gear is made from 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 top quality, excellent efficiency and low sound levels have been achived.
The output shaft is hollow, though it can be done 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), supply the most competitive 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 offers like reference size 63 and is born like answer to the ask for 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 feature are identical to the its analogous in the size 62.
Assembly Position
In order to create a gear reducer and to make it 
work efficiently, the following instructions must be taken into account:
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 suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer had to be painted, the essential oil seals should be covered to prevent them from drying and losing their seal.
The device 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 gear reducer result shaft is driven instead of being a driver. Bearing in mind that one of the features of this worm-gear reducer is the fact that can’t be axle-driven by the output shaft (irreversibility), it is almost extremely hard to meet up total irreversibility conditions, due to external factors such as for example vibrations, etc. This is why, when the application form requires total irreversibility, it is advisable to utilize exterior brakes with enough capacity to avoid slipping.
It could be said that the conditions under which irreversibility can happen are the following:
• Efficiency < 0,55 (see table of technical features).
Maintenance
This sort 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 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 velocity decrease ratios with only 1 equipment pairing in a far 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 may be the low level sound they produce. Some drawbacks are the general low effectiveness and the actual fact that they generate temperature.
Advantage of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms because of truth that the metallic fibrous framework has not been cut.
2) The top hardness after cool rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cold rolled worms are suitable for miniature gear applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.
4) Due to 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 finish. Thus, EP-Precision Cold 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 non-parallel, 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 typically the traveling component, with the worm’s thread advancing one’s 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 full switch (360 degrees) of the worm increases the gear by one tooth. Therefore a gear with 24 teeth provides a gear reduction of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the gear, divided by the amount of starts on the worm. (That is not the same as most other types of gears, where the gear reduction is definitely 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 action causes friction and high temperature, which limits the efficiency of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, high temperature), the worm and gear are constructed with dissimilar metals – for example, the worm may be made of hardened steel and the gear 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 plays a part in quiet procedure.) This makes worm gears ideal for use where noise 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 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 speed reducers in low- to medium-quickness applications. And, because their decrease ratio is based on the number of gear teeth alone, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are usually self-locking, making them ideal for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio velocity reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends upon the business lead angle and quantity of begins on the worm – and because increased effectiveness is always an objective, the ratio should be kept as low as possible. To run properly, worms and worm gears used 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 Day time Shipment System for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution 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 level of resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations