Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque values with suprisingly low backlash in extremely compact frames. Three equipment ratios are available to meet the requirements of your unique application.
Order the Ever-Power RW Series worm gear box assembly you need, ask for a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm equipment box assembly may be little, but it’s challenging enough to take care of demanding power transfer applications. Constructed with machined aluminum housings and hardened steel input and result gears, they’ll deliver a long time 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 for your needs. Each RW model worm equipment box 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 correct 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 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 acceleration is increased or reduced in proportion index G – Equipment BOXES – on blue – smallto the speed reduction ratio. Ever-Power has a full type of gearboxes and rate 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 gear boxes provide options of rate reducers or speed increasers, and could be driven in either direction. All Ever-Power worm equipment speed reducers and right angle drives are produced for high performance in a large spectrum of applications. Typically worm equipment boxes are not used as acceleration increasers. The instances are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They can be found in a wide range of ratios and are built with right hands or left hand worm gears. The output shafts could be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear speed reducers are made up 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 exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel includes 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 driven 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 particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is because of the very smooth running of the worm equipment combined with the utilization of cast iron and high precision on component manufacturing and assembly. Regarding the our precision gearboxes, we consider extra care of any sound which can be interpreted as a murmur from the apparatus. So the general noise level of our gearbox can be 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 substantially simpler and smaller sized.The worm gearbox is an angle gear. This is 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 immediate suspension for wheels, movable arms and other parts rather than needing 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 situations can be used as brake or as extra protection. Also spindle gearboxes with a trapezoidal spindle are self-locking, making them ideal 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 sorts of gear-reducer. This make them perform efficiently 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. Because of the mechanical work of the two parts having top quality, excellent 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 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), supply the best 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 has like reference size 63 and exists like answer to the ask for of our costumers since, upon mounting greater bearings in the result, bears greater 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 setup a gear reducer and to make it work efficiently, the next 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 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 prevent them from drying and losing their seal.
The machine work of the fittings create in the output shafts require an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is wise to pay attention to this element when the gear reducer output shaft is driven rather than being a driver. Considering that among the features of this worm-gear reducer may be the fact that can’t be axle-powered by the output shaft (irreversibility), it really is almost difficult to meet up total irreversibility conditions, due to external factors such as for example vibrations, etc. That is why, when the application form requires total irreversibility, it is advisable to make use of 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 (see table of specialized features).
Maintenance
This kind of gear reducer is provided with a permanent lubrication, so it does 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 has 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 one gear pairing in a far more compact space when compared with other styles of gears. We offer up to a maximum ratio of 100:1 with this products. Another advantage of the Worm and Wheel equipment pairings is the low level sound they produce. Some disadvantages are the general low efficiency and the actual fact that they generate warmth.
Benefit of EP’s Worm Gears – “Chilly rolled Worm Gears”
1) The hardness of the helicoid surface area has been attained by function hardening when the cold 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 surface hardness after cold rolling is increased by 1.2 to 1 1.3 times in comparison to the hardness of the initial material, and the hardness of the helicoid surface area increases to around HB240 to 260.
3) Cold rolled worms are ideal for miniature equipment applications since this is often rotated smoothly without damaging the worm wheels crafted from POM or additional soft materials.
4) Because of the implementation of the cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Cold Rolled Worms provide a smooth operation and long-term durability.
Worm gears are made of a worm and a gear (sometimes known as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm is definitely analogous to a screw with a V-type thread, and the gear is certainly analogous to a spur gear. The worm is normally the generating component, with the worm’s thread advancing one’s teeth of the gear.
Just like a ball screw, the worm in a worm gear might have a single 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 advances the equipment by one tooth. So a gear with 24 teeth provides a gear reduction of 24:1. For a multi-start 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 almost every other types of gears, where the gear reduction is certainly 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 actions causes friction and heat, which limits the performance of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, warmth), the worm and gear are made of dissimilar metals – for instance, the worm may be made of hardened steel and the gear manufactured from bronze or aluminum.
Although the sliding contact decreases efficiency, it provides extremely quiet operation. (The usage of dissimilar metals for the worm and equipment also contributes to 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 materials for the gear implies that it could absorb shock loads, like those experienced in weighty 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 used as swiftness reducers in low- to moderate-speed applications. And, because their reduction ratio is founded on the amount of gear teeth only, they are more compact than other styles of gears. Like fine-pitch lead screws, worm gears are typically self-locking, making them ideal for hoisting and lifting applications.
Worms & Worm Gears
EP Gear’s worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio swiftness reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest kind of gearing.
Because the efficiency of a worm equipment drive depends on the lead angle and number of starts on the worm – and because increased performance is always a goal, 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 line of worms and worm gears can 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 transmitting 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.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations