Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature correct angle gearboxes offer high torque values with very low backlash in incredibly compact frames. Three equipment ratios are available to meet up the needs of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will need, ask for a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be little, but it’s difficult enough to handle demanding power transfer applications. Constructed with machined aluminium housings and hardened steel input and output gears, they’ll deliver many years of reliable performance.
Available 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 very low backlash (optimum 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 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 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 based on application. Also velocity is increased or reduced compared index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a 
full type of gearboxes and speed reducers, and the parts had a need to build them, in a wide variety of standard ratios and shaft options along with custom designs.
Helical, bevel, and miter equipment boxes offer the options of swiftness reducers or quickness increasers, and may be powered in either direction. 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 are not used as swiftness increasers. The cases are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They are offered in an array of ratios and are built with right hands or left hands worm gears. The result shafts could be solid or hollow, and load capacity is unaffected by direction 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 which range from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary motion into intermittent rotary movement. The rotating drive wheel has a pin that gets to right into a slot of the powered wheel advancing it by one stage 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 may be accomplished through the use of adapted gearboxes or special gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is due to the very smooth operating of the worm equipment combined with the utilization of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we consider extra care of any sound which can be interpreted as a murmur from the apparatus. Therefore the general noise degree of our gearbox is certainly reduced to an absolute minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to one another. This often proves to be a decisive advantage making the incorporation of the gearbox substantially simpler and smaller sized.The worm gearbox can be 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 quite firmly embedded in the apparatus house and is ideal for direct suspension for wheels, movable arms and other areas rather than having to create a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes will provide a self-locking impact, which in many situations can be used as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them ideal for a wide selection of solutions.
Structural Features
The worm-gear reducer comprises of three main parts: housing, worm-gear and wheel.
The carcasses are constructed with GG-25 cast-iron, and are available for all sorts of gear-reducer. This make sure they are perform effectively under stressed conditions, vibrations or any kind 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 manufactured from DIN (GZ-CuSn 12 Ni2) centricast bronze, melted on steel. Due to the mechanical work of the two parts having top quality, excellent overall performance and low sound amounts have been achived.
The output shaft is hollow, although it is possible 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 out there.
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 others of technical characteristic are similar to the its analogous in the size 62.
Assembly Position
In order to set up a gear reducer and 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 gear reducer needed to be painted, the 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 wise to pay attention to this element when the apparatus reducer result shaft is driven instead of being a driver. Bearing in mind that one of the features of this worm-gear reducer may be the fact that can’t be axle-driven by the result shaft (irreversibility), it really is almost unattainable to meet total irreversibility conditions, due to external factors such as vibrations, etc. That is why, when the application form needs total irreversibility, it really is advisable to make use of external brakes with enough capacity to avoid slipping.
It could be said that the conditions under which irreversibility can occur are as follows:
• Efficiency < 0,55 (see table of technical features).
Maintenance
This sort of gear reducer will get a permanent lubrication, so it will not need any type of maintenance.
Lubrication
The lubrication of this gear reducer type is continuous and comes as standard, with high quality refined oil which includes antirust and antiwear products with Fe, Cu and alloy protectors that has quality level 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 acceleration reduction ratios with only 1 gear pairing in a far more compact space in comparison to other styles of gears. You can expect up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel equipment pairings may be the low level noise they produce. Some disadvantages will be the general low performance and the fact that they generate temperature.
Benefit of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work hardening when the chilly rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous structure has not been cut.
2) The surface hardness after frosty 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) 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) Due to the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms provide a smooth operation and long term durability.
Worm gears are made of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to one another. The worm is analogous to a screw with a V-type thread, and the gear can be analogous to a spur gear. The worm is typically the driving component, with the worm’s thread advancing one’s teeth of the gear.
Just 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 full convert (360 degrees) of the worm advances the equipment by one tooth. Therefore a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the apparatus, divided by the number of begins on the worm. (That is different from most other types of gears, where the gear reduction can be a function of the diameters of both components.)
The meshing of the worm and the apparatus is an assortment of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding actions causes friction and warmth, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, temperature), the worm and gear are made from dissimilar metals – for instance, the worm could be produced of hardened steel and the apparatus made of bronze or aluminum.
Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The utilization of dissimilar metals for the worm and equipment 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. Furthermore, the use of a softer material for the gear implies that it can absorb shock loads, like those experienced in large equipment or crushing machines.
The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be used as swiftness reducers in low- to moderate-acceleration applications. And, because their decrease ratio is founded on the number of gear teeth by itself, they are more compact than other types of gears. Like fine-pitch 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 transmission applications requiring high-ratio rate reduction in a restricted space using correct angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest form of gearing.
Because the effectiveness of a worm gear drive depends on the business lead angle and number of starts on the worm – and because increased performance is always a goal, the ratio ought to be kept only possible. To run correctly, worms and worm gears used 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 Gear Guaranteed Same Day Shipment Plan for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed decrease 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, dual and quad start configurations