Ever-Power has been developing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque ideals with very low backlash in incredibly compact frames. Three equipment ratios are available to meet up the needs of your specific application.
Order the Ever-Power RW Series worm gear box assembly you will need, request a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly may be little, but it’s tough enough to handle demanding power transfer applications. Constructed with machined aluminium housings and hardened metal input and result 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 container assembly provides proportionally high torque ideals (1.4 NM at 3,000 RPM) with suprisingly 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
Suprisingly low backlash (2° backlash optimum)
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 could increase or reduce that torque based on application. Also quickness is increased or decreased in proportion index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power has a full line of gearboxes and quickness reducers, and the components needed to build them, in a wide range of standard ratios and shaft choices in addition to custom designs.
Helical, bevel, and miter gear boxes offer the options of swiftness reducers or velocity increasers, and could be driven in either path. All Ever-Power worm gear speed reducers and right angle drives are manufactured for powerful in a large spectral range of applications. Typically worm gear boxes are not used as acceleration increasers. The cases are molded glass-filled material making them extremely durable and resistant to corrosive conditions. They can be found in an array of ratios and are equipped with right hands or left hands worm gears. The result shafts may be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear swiftness reducers are comprised of a screw (the worm) that drives a wheel (helical gear) or solitary enveloping wheel and so are found in mechanical applications which range from conveyors to workout devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion 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 one of the key words of the standard gearboxes of the BJ-Series. Further optimisation can be achieved 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 gear combined with the use of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we take extra treatment of any sound that can be interpreted as a murmur from the gear. So the general noise degree of our gearbox is usually reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to each other. This often proves to become a decisive advantage making the incorporation of the gearbox significantly simpler and more compact.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 gear house and is well suited for direct suspension for wheels, movable arms and other areas rather than needing to create a separate suspension.
Self locking
For larger gear 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 ideal for a wide range 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 them perform effectively 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 high quality, excellent functionality and low noise levels have been achived.
The output shaft is hollow, although 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), provide 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 response to the ask for 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 set up a gear reducer and also to make it work efficiently, the following instructions must be considered:
It must 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 apparatus reducer had to be painted, the essential oil seals must be covered to avoid them from drying and losing their seal.
The device 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 focus on this aspect when the gear reducer output shaft is driven rather than being a driver. Bearing in mind that among the features of this worm-equipment reducer is the fact that cannot be axle-driven by the result shaft (irreversibility), it is almost impossible to meet total irreversibility conditions, due to external elements such as for example vibrations, etc. That is why, when the application form needs total irreversibility, it is advisable to utilize exterior brakes with enough power to avoid slipping.
It may be said that the circumstances under which irreversibility can occur are the following:
• Efficiency < 0,55 (find table of specialized features).
Maintenance
This kind of gear reducer will get a permanent lubrication, so it does not need any type of maintenance.
Lubrication
The lubrication of the gear reducer type is constant 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; because of this its maintenance isn’t needed.
High reduction gear
Worm and wheel gear pairings provide large rate decrease ratios with only one gear pairing in a far more compact space when compared with other styles of gears. We offer up to 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 drawbacks are the general low performance and the fact that they generate warmth.
Advantage of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface area has been achieved by work hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous framework 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) Frosty rolled worms are ideal for miniature equipment 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 technique, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Frosty Rolled Worms give a smooth operation and long-term durability.
Worm gears are constructed of a worm and a gear (sometimes referred to as a worm wheel), with nonparallel, non-intersecting shafts oriented 90 degrees to each other. The worm is certainly analogous to a screw with a V-type thread, and the gear is usually analogous to a spur gear. The worm is typically the generating component, with the worm’s thread advancing one’s teeth of the gear.
Like a ball screw, the worm in a worm gear may have an individual start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each complete turn (360 degrees) of the worm increases the gear by one tooth. So a gear with 24 teeth will provide a gear reduced amount of 24:1. For a multi-begin worm, the gear reduction equals the number of teeth on the apparatus, divided by the number of starts on the worm. (That is not the same as almost every other types of gears, where the gear reduction is 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 action causes friction and high temperature, which limits the effectiveness of worm gears to 30 to 50 percent. To be able to minimize friction (and therefore, warmth), the worm and equipment are constructed with dissimilar metals – for instance, the worm may be made of hardened steel 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 suitable for use where noise should be minimized, such as in elevators. In addition, the use of a softer material for the gear implies that it can absorb shock loads, like those experienced in heavy equipment or crushing devices.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as velocity reducers in low- to medium-speed applications. And, because their decrease ratio is based on the amount of gear teeth alone, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes them perfect 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 velocity reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends on the lead angle and amount of begins 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 used together will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears could 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 tranny needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by lowering 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