Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature right angle gearboxes provide high torque values with suprisingly low backlash in extremely compact frames. Three equipment 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, demand a quote, or e mail us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly may be small, but it’s tough enough to handle demanding power transfer applications. Designed with machined aluminum housings and hardened steel input and output gears, they’ll deliver many years of reliable performance.
Obtainable in three standard output ratios and with two output shaft diameter options, it’s easy to find the Ever-Power right miniature gearbox for your needs. Each RW model worm gear package assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with very low backlash (maximum 2° backlash).
For full specifications 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 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
Suprisingly 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 quickness is increased or decreased compared index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a full line of gearboxes and velocity reducers, and the components needed to build them, in an array of standard ratios and shaft choices and also custom designs.
Helical, bevel, and miter equipment boxes provide options of swiftness reducers or quickness increasers, and may be driven in either path. All Ever-Power worm equipment speed reducers and correct angle drives are manufactured for powerful in a large spectral range of applications. Typically worm equipment boxes are not used as acceleration increasers. The situations are molded glass-filled material making them extremely tough and resistant to corrosive conditions. They are offered in a wide variety of ratios and are equipped with right hands or left hand worm gears. The output shafts may be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear speed reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or solitary enveloping wheel and are used 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 right into a slot of the driven 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 extremely quiet. This is due to the very smooth operating of the worm gear combined with the use of cast iron and high precision on element manufacturing and assembly. Regarding the our precision gearboxes, we take extra care of any sound which can be interpreted as a murmur from the apparatus. So 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 each other. This often proves to be a 
decisive advantage producing the incorporation of the gearbox considerably simpler and more compact.The worm gearbox is an angle gear. This is often an advantage for incorporation into constructions.
Solid 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 parts rather than needing to create a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes provides a self-locking impact, 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 types of gear-reducer. This make sure they are perform effectively under stressed conditions, 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 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 functionality and low noise amounts have been achived.
The output shaft is hollow, though it can be done 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 best 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 provides like reference size 63 and is born like response to the request of our costumers since, upon mounting higher bearings in the result, bears better 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 set 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 must be covered to prevent them from drying and losing their seal.
The device work of the fittings set up 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 output shaft is driven instead of being a driver. Bearing in mind that among the top features of this worm-equipment reducer is the fact that can’t be axle-powered by the result shaft (irreversibility), it is almost impossible to meet up total irreversibility conditions, due to external elements such as for example vibrations, etc. This is why, when the application form needs total irreversibility, it is advisable to utilize external brakes with enough power to avoid slipping.
It could be said that the circumstances under which irreversibility can happen are the following:
• Efficiency < 0,55 (discover table of technical features).
Maintenance
This kind of gear reducer will get a permanent lubrication, so it will not need any kind of maintenance.
Lubrication
The lubrication of the 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 speed reduction ratios with only one gear pairing in a far more compact space in comparison to other types of gears. We offer up to a maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some disadvantages are the general low effectiveness and the actual fact that they generate temperature.
Advantage of EP’s Worm Gears – “Cold rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by work hardening when the frosty rolling was performed, providing Worm gears with better mechanical properties than machined worms due to fact that the metallic fibrous structure has not been cut.
2) The top hardness after chilly rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the original material, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cool rolled worms are ideal for miniature gear applications since this can be rotated smoothly without damaging the worm wheels made out of POM or other soft materials.
4) Due to the implementation of this cold rolling technique, 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 constructed of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is usually analogous to a screw with a V-type thread, and the gear is analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing the teeth of the gear.
Just like a ball screw, the worm in a worm gear might 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 change (360 degrees) of the worm increases the equipment by one tooth. Therefore a gear with 24 teeth will provide 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 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 both 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. In order to minimize friction (and therefore, warmth), the worm and gear are made of dissimilar metals – for instance, the worm may be produced of hardened metal 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 means that it can absorb shock loads, like those experienced in heavy equipment or crushing machines.
The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They can also be used as swiftness reducers in low- to moderate-speed applications. And, because their decrease ratio is founded on the number of gear teeth alone, they are more compact than other types of gears. Like fine-pitch business lead screws, worm gears are typically 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 quickness reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the effectiveness of a worm equipment drive depends upon the business lead angle and amount 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 utilized 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 time Shipment Program for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest kind of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is level of resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double and quad start configurations