worm gear box assembly

Ever-Power has been creating and manufacturing reliable, high performance gearboxes for over twenty years. RW Series miniature correct angle gearboxes provide high torque values with very low backlash in incredibly compact frames. Three gear ratios are available to meet the requirements of your unique application.
Order the Ever-Power RW Series worm equipment box assembly you will 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 little, but it’s hard enough to take care of demanding power transfer applications. Constructed with machined light weight aluminum housings and hardened metal input and result gears, they’ll deliver many years 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 for your needs. Each RW model worm gear package assembly provides proportionally high torque values (1.4 NM at 3,000 RPM) with very 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 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
Very low backlash (2° backlash maximum)
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 Worm Gear Box Assembly drives take supplied torque and may increase or reduce that torque predicated on application. Also acceleration is increased or decreased in proportion index G – Equipment BOXES – on blue – smallto the speed reduction ratio. Ever-Power has a full type of gearboxes and swiftness reducers, and the components needed to build them, in an array of regular ratios and shaft options in addition to custom designs.
Helical, bevel, and miter equipment boxes offer the options of speed reducers or rate increasers, and may 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 quickness increasers. The situations are molded glass-filled materials making them extremely tough and resistant to corrosive environments. They can be found in a wide selection of ratios and are built with right hands or left hand worm gears. The output shafts could be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear quickness reducers are made up of a screw (the worm) that drives a wheel (helical gear) or single enveloping wheel and so are found in mechanical applications which range from conveyors to physical exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary movement into intermittent rotary motion. The rotating drive wheel has a pin that gets to into a slot of the driven 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 among the key terms of the standard gearboxes of the BJ-Series. Further optimisation can be achieved by using 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 use of cast iron and high precision on element manufacturing and assembly. Regarding the our precision gearboxes, we consider extra treatment of any sound that can be interpreted as a murmur from the gear. Therefore the general noise degree of our gearbox is reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to each other. This frequently proves to be a decisive advantage producing the incorporation of the gearbox considerably simpler and smaller sized.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 direct suspension for wheels, movable arms and other parts rather than having to create 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 utilized 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 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 type 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. Because of the mechanical work of these two parts having top quality, excellent efficiency and low sound 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 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 has like reference size 63 and exists like response to the demand of our costumers since, upon mounting greater bearings in the result, bears better axial loads that its analogous one in the MF-62 series. The others 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 taken into account:
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 suggested to insert compensating couplings, connectors, torque limiters etc…
If the apparatus reducer needed to be painted, the oil seals should be covered to prevent them from drying and losing their seal.
The machine 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 aspect when the apparatus reducer output shaft is driven instead of being a driver. Considering that among the top features of this worm-gear reducer is the fact that cannot be axle-driven by the result shaft (irreversibility), it really is almost not possible to meet total irreversibility conditions, due to external factors such as vibrations, etc. This is why, when the application form needs total irreversibility, it really is advisable to make use of exterior brakes with enough capacity to avoid slipping.
It may be said that the conditions under which irreversibility can happen are the following:
• Efficiency < 0,55 (observe table of technical features).
Maintenance
This type of gear reducer is provided with a permanent lubrication, so it really does not need any kind of maintenance.
Lubrication
The lubrication of this gear reducer type is constant and comes as standard, with high 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; because of this its maintenance isn’t needed.

High reduction gear
Worm and wheel gear pairings provide large acceleration decrease ratios with only one equipment pairing in a more compact space in comparison to other styles of gears. We offer up to a maximum ratio of 100:1 with our products. Another benefit of the Worm and Wheel gear pairings is the low level sound they produce. Some disadvantages will be the general low performance and the actual fact that they generate high temperature.

Benefit of EP’s Worm Gears – “Cold 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 because of truth that the metallic fibrous framework has not been cut.

2) The top hardness after frosty rolling is increased by 1.2 to at least one 1.3 times in comparison to the hardness of the original material, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Chilly rolled worms are suitable for miniature gear 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 this cold rolling method, the helicoid surface of EP-Worm (M0.5 to 2.0) comes out with a mirror like finish. Thus, EP-Precision Frosty Rolled Worms provide a smooth procedure and long-term durability.

Worm gears are constructed 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 can be analogous to a screw with a V-type thread, and the gear is definitely 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 may have a single start or multiple starts – meaning that there are multiple threads, or helicies, on the worm. For a single-start worm, each full 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 amount of begins on the worm. (That is different from almost every other types of gears, where in fact the gear reduction can be 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 high temperature, which limits the effectiveness 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 instance, the worm could be produced of hardened metal and the gear made of bronze or aluminum.

Although the sliding contact decreases efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and gear also plays a part in quiet procedure.) This makes worm gears ideal for use where sound should be minimized, such as in elevators. In addition, the usage of a softer materials for the gear implies that it could absorb shock loads, like those experienced in weighty equipment or crushing devices.

The primary advantage of worm gears is their capability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as velocity reducers in low- to medium-swiftness applications. And, because their decrease ratio is based on the amount of gear teeth alone, they are smaller sized than other types of gears. Like fine-pitch business lead screws, worm gears are typically self-locking, making them well suited 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 acceleration reduction in a limited space using correct angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.

Because the effectiveness of a worm equipment drive depends on the lead angle and number of begins on the worm – and because increased effectiveness is always a goal, the ratio should be kept only possible. To run correctly, worms and worm gears used together must have the same diametral pitch and threads.

Our complete line of worms and worm gears could be ordered through the EP Equipment Guaranteed Same Time Shipment Plan for the quickest delivery possible.
Product Features
90°, nonintersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears offer the smoothest, quietest type of gearing.
They offer 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, double and quad start configurations

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