Ever-Power has been developing and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature right angle gearboxes offer high torque ideals with suprisingly low backlash in incredibly compact frames. Three equipment 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, request a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly could be small, but it’s hard enough to handle demanding power transfer applications. Designed with machined aluminum housings and hardened steel input and result gears, they’ll deliver a long time of reliable performance.
Obtainable in three standard result ratios and with two result shaft diameter options, it’s simple to find the Ever-Power right miniature gearbox to your requirements. Each RW model worm equipment box assembly provides proportionally high torque values (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 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 steel 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 rate is increased or decreased compared index G – Equipment BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full type of gearboxes and acceleration reducers, and the parts had a need to build them, in an array of regular ratios and shaft choices in addition to custom designs.
Helical, bevel, and miter equipment boxes provide options of acceleration reducers or speed increasers, and could be driven in either direction. 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 swiftness increasers. The situations are molded glass-filled materials making them extremely durable and resistant to corrosive environments. They are offered in an array of ratios and are equipped with right hand or left hand worm gears. The output shafts could be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear swiftness reducers are made up of a screw (the worm) that drives a wheel (helical gear) or single enveloping wheel and so are used 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 movement. The rotating drive wheel includes a pin that gets to 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 one of the key terms of the standard gearboxes of the BJ-Series. Further optimisation can be achieved through the use of adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is due to the very smooth running of the worm gear combined with the usage of cast iron and high precision on component manufacturing and assembly. Regarding the our precision gearboxes, we consider extra treatment of any sound that can be interpreted as a murmur from the apparatus. Therefore the general noise degree of our gearbox is 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 become a decisive advantage producing the incorporation of the gearbox considerably simpler and more compact.The worm gearbox can be 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 gear house and is ideal for direct suspension for wheels, movable arms and other areas rather than needing to build a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes provides a self-locking effect, which in many circumstances can be used as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them well suited 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 of GG-25 cast-iron, and so are available for all kinds of gear-reducer. This make them perform effectively under stressed conditions, vibrations or any type of setback that can’t be avoided through 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 functionality and low noise amounts have been achived.
The output shaft is hollow, although it can be done to adapt a solid shaft.
The oil seals manufactured from 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 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 answer to the ask for of our costumers since, upon mounting greater bearings in the output, bears greater axial loads that its analogous one in the MF-62 series. The others of technical feature are similar to the its analogous in the size 62.
Assembly Position
In order to set up a gear reducer and to make it work efficiently, the following instructions must be considered:
It must be fixed on a set surface in order 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 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 need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to focus on 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 cannot be axle-driven by the output shaft (irreversibility), it really is almost not possible to meet total irreversibility conditions, due to external elements such as for example vibrations, etc. That is why, when the application form requires total irreversibility, it really is advisable to utilize exterior brakes with enough capacity to avoid slipping.
It could be said that the conditions under which irreversibility can occur are the following:
• Efficiency < 0,55 (observe table of specialized features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so that it will 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 has 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 acceleration decrease ratios with only 1 equipment pairing in a more compact space when compared with other types of gears. You can expect 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 drawbacks are the general low performance and the fact that they generate heat.
Benefit of EP’s Worm Gears – “Frosty rolled Worm Gears”
1) The hardness of the helicoid surface has been attained by work hardening when the cool rolling was performed, providing Worm gears with better mechanical properties than machined worms due to truth that the metallic fibrous framework is not 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 original materials, 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 is often 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 finish. Thus, EP-Precision Frosty Rolled Worms give a smooth operation and long term durability.
Worm gears are constructed of a worm and a equipment (sometimes known as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to one another. The worm is definitely analogous to a screw with a V-type thread, and the apparatus can be analogous to a spur gear. The worm is normally 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 might 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 change (360 degrees) of the worm advances 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 begins on the worm. (That is different from most 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 actions causes friction and heat, which limits the performance of worm gears to 30 to 50 percent. To be able to minimize friction (and for that reason, heat), the worm and equipment are made from dissimilar metals – for example, the worm may be made of hardened steel and the apparatus 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 equipment also plays a part in 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 materials for the gear implies that it can absorb shock loads, like those experienced in heavy equipment or crushing machines.
The primary benefit of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as rate reducers in low- to moderate-acceleration applications. And, because their decrease ratio is based on the number of gear teeth by itself, they are more compact than other styles of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, which makes 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 quickness reduction in a limited space using right angle (90°), non-intersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest type of gearing.
Because the efficiency of a worm equipment drive depends upon the lead angle and amount of starts on the worm – and because increased performance is always an objective, the ratio should be kept as low as possible. To run properly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmission needs.
Our worm gears provide smoothest, quietest type of gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, double and quad start configurations