Ever-Power has been creating and manufacturing reliable, powerful gearboxes for over 20 years. RW Series miniature correct angle gearboxes provide high torque ideals with very low backlash in extremely compact frames. Three gear ratios are available to meet up the requirements of your specific application.
Order the Ever-Power RW Series worm gear box assembly you 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 small, but it’s challenging enough to handle demanding power transfer applications. Designed with machined aluminium housings and hardened steel input and result gears, they’ll deliver many years 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 to your requirements. 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 specifications 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
Suprisingly 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 could increase or reduce that torque based on application. Also velocity is increased or decreased compared index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full line of gearboxes and acceleration reducers, and the parts needed to build them, in an array of standard ratios and shaft choices in addition to custom designs.
Helical, bevel, and miter gear boxes provide options of speed reducers or quickness increasers, and may be driven in either path. All Ever-Power worm gear speed reducers and correct angle drives are manufactured for high performance in a large spectral range of applications. Typically worm equipment boxes are not used as acceleration increasers. The instances are molded glass-filled materials making them extremely rugged and resistant to corrosive conditions. They can be found in a wide variety of ratios and are equipped 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 so are used in mechanical applications ranging from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are typically used to transform continuous rotary movement into intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the powered wheel advancing it by one step and a blocking disc that locks the powered wheel constantly in place between steps.
Compact design
Compact design is one of the key words of the typical gearboxes of the BJ-Series. Further optimisation can be achieved by using adapted gearboxes or unique 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 use 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 gear. Therefore the general noise level of our gearbox can be 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 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 an edge 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 areas rather than having 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 utilized as brake or as extra security. 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 from GG-25 cast-iron, and are available for all sorts of gear-reducer. This make them perform efficiently under stressed conditions, vibrations or any type of setback that cannot be avoided during 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. Due to the mechanical work of these two parts having top quality, excellent overall performance and low sound amounts have been achived.
The output shaft is hollow, though 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 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 answer to the demand of our costumers since, upon mounting better bearings in the output, 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 setup a gear reducer and also to make it happen 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 suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer had 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 factor when the apparatus reducer output shaft is driven rather than being a driver. Considering that one of the features of this worm-gear reducer may be the fact that can’t be axle-powered by the result shaft (irreversibility), it really is almost not possible to meet total irreversibility conditions, because of external factors such as for example vibrations, etc. For this reason, when the application form needs total irreversibility, it really is advisable to utilize external brakes with enough capacity to avoid slipping.
It could be said that the circumstances under which irreversibility can occur are the following:
• Efficiency < 0,55 (see table of specialized features).
Maintenance
This sort of gear reducer will get a permanent lubrication, so it really 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 has antirust and antiwear products with Fe, Cu and alloy protectors which has quality level CLP DIN 51517-3, FGZ level 12, AP GL-4, US 224, AGMA 250-04; for that reason its maintenance isn’t needed.
High reduction gear
Worm and wheel gear pairings provide large acceleration reduction ratios with only 1 equipment 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 advantage of the Worm and Wheel gear pairings may be the low level sound they produce. Some drawbacks are the general low effectiveness and the actual fact that they generate temperature.
Benefit of EP’s Worm Gears – “Cold 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 fact that the metallic fibrous framework has not been 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 materials, and the hardness of the helicoid surface increases to around HB240 to 260.
3) Cool rolled worms are ideal for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels made out of POM or various other soft materials.
4) Due to the implementation of the cold rolling technique, the helicoid surface of EP-Worm (M0.5 to 2.0) comes away with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms give a smooth operation and long term durability.
Worm gears are constructed of a worm and a equipment (sometimes referred to as a worm wheel), with nonparallel, nonintersecting shafts oriented 90 degrees to each other. The worm is definitely analogous to a screw with a V-type thread, and the apparatus is analogous to a spur equipment. The worm is typically 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 – 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 gear by one tooth. Therefore a gear with 24 teeth will provide a gear reduction 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. (This is not the same as almost every other types of gears, where in fact 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 actions causes friction and heat, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and therefore, warmth), the worm and equipment are made of dissimilar metals – for example, the worm could be made of hardened metal and the gear made of bronze or aluminum.
Although the sliding contact reduces efficiency, it provides very quiet operation. (The usage of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. In addition, the use of a softer materials for the gear implies that it can absorb shock loads, like those experienced in large equipment or crushing devices.
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 medium-quickness applications. And, because their reduction ratio is founded on the number of gear teeth only, 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 a highly effective answer for power transmitting applications requiring high-ratio quickness reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly used, 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 quantity of begins on the worm – and because increased efficiency is always an objective, the ratio ought to be kept as low as possible. To run properly, worms and worm gears used 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 Gear Guaranteed Same Time Shipment Program for the fastest delivery possible.
Product Features
90°, nonintersecting shaft applications answer highly specialized power tranny needs.
Our worm gears offer the 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 level of resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, dual and quad start configurations