Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature correct angle gearboxes provide high torque ideals with suprisingly low backlash in incredibly compact frames. Three equipment ratios are available to meet up the requirements of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you need, request a quote, or e mail us 
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Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be little, but it’s challenging enough to handle 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.
Available in three standard output ratios and with two output shaft diameter options, it’s simple to find the Ever-Power correct miniature gearbox to your requirements. Each RW model worm equipment container assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with suprisingly low backlash (optimum 2° backlash).
For full specs and Dimensional Parametric Search, see individual product listings.
The Ever-Power Advantage
High efficiency miniature right 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 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 acceleration is increased or decreased 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 parts had a need to build them, in a wide selection of standard ratios and shaft options and also custom designs.
Helical, bevel, and miter gear boxes offer the options of rate reducers or swiftness increasers, and could be driven in either path. All Ever-Power worm equipment speed reducers and correct angle drives are manufactured for high performance in a large spectrum of applications. Typically worm gear boxes aren’t used as quickness increasers. The situations are molded glass-filled material making them extremely rugged and resistant to corrosive environments. They can be found in a wide range of ratios and are equipped with right hand or left hand worm gears. The output shafts may be solid or hollow, and load capability is unaffected by path and rotation.
Worm gear rate reducers are made up 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 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 has a pin that reaches right into a slot of the driven wheel advancing it by one stage and a blocking disc that locks the driven wheel constantly in place between steps.
Compact design
Compact design is among the key terms of the typical 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 use of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we take extra treatment of any sound which can be interpreted as a murmur from the apparatus. So the general noise level 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 often proves to be a decisive advantage making the incorporation of the gearbox significantly simpler and more compact.The worm gearbox is an angle gear. This is often 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 apparatus house and is ideal for immediate suspension for wheels, movable arms and other areas rather than having to build 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 perfect for an array of solutions.
Structural Features
The worm-gear reducer is made up of three main parts: housing, worm-gear and wheel.
The carcasses are made from GG-25 cast-iron, and so are available for all kinds of gear-reducer. This make sure they are perform effectively under stressed circumstances, vibrations or any kind of setback that cannot be avoided through the assembly
The worm-gear is made from 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 the two parts having top quality, excellent functionality and low sound amounts have been achived.
The output shaft is hollow, though it can be done to adapt a solid shaft.
The oil seals made of 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), supply the best 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 is born like response to the request of our Worm Gear Box Assembly costumers since, upon mounting higher bearings in the result, bears greater axial loads that its analogous one in the MF-62 series. The rest of technical characteristic are similar 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 next instructions must be taken into account:
It must be fixed on a flat surface 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 gear reducer needed to be painted, the essential oil seals should be covered to avoid them from drying and losing their seal.
The device work of the fittings setup in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to focus on this element when the apparatus reducer result shaft is driven rather than being a driver. Considering that one of the top features of this worm-equipment reducer is the fact that cannot be axle-powered by the output shaft (irreversibility), it is almost extremely hard to meet total irreversibility conditions, because of external factors such as vibrations, etc. That is why, when the application form needs total irreversibility, it really is advisable to utilize exterior brakes with enough power to avoid slipping.
It may be said that the conditions under which irreversibility can happen are as follows:
• Efficiency < 0,55 (observe table of technical features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so it will not need any type of maintenance.
Lubrication
The lubrication of this gear reducer type is constant and comes as standard, with high 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 equipment pairings provide large quickness decrease ratios with only 1 gear pairing in a far more compact space in comparison to other styles of gears. We offer up to maximum ratio of 100:1 with this products. Another benefit of the Worm and Wheel equipment pairings may be the low level sound they produce. Some disadvantages will be the general low effectiveness and the fact that they generate high 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 chilly 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 chilly rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Frosty rolled worms are suitable for miniature equipment applications since this could be rotated smoothly without damaging the worm wheels crafted from POM or other soft materials.
4) Due to the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Chilly 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 nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is analogous to a screw with a V-type thread, and the gear 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.
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 complete turn (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth will provide a gear reduction of 24:1. For a multi-begin worm, the gear reduction equals the amount of teeth on the apparatus, divided by the amount of starts on the worm. (This is different from almost every 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 action causes friction and high temperature, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, temperature), the worm and gear are made from dissimilar metals – for example, the worm could be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides extremely quiet operation. (The use of dissimilar metals for the worm and equipment also contributes to quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as for example 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 utilized as quickness reducers in low- to moderate-rate applications. And, because their reduction ratio is based on the number of gear teeth only, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes them ideal 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 rate reduction in a limited space using correct angle (90°), non-intersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.
Because the efficiency of a worm equipment drive depends on the lead angle and quantity of begins on the worm – and because increased effectiveness is always a goal, the ratio should be kept as low as possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Day Shipment System for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications answer highly specialized power transmission needs.
Our worm gears provide smoothest, quietest type of gearing.
They offer high-ratio speed decrease in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, double and quad start configurations