worm gear box assembly

Ever-Power has been designing and manufacturing reliable, powerful gearboxes for over twenty years. RW Series miniature correct angle gearboxes offer high torque values with very low backlash in extremely compact frames. Three equipment ratios are available to meet up the requirements of your specific application.
Order the Ever-Power RW Series worm equipment box assembly you will need, demand a quote, or contact us for more information.
Worm Wheel Miniature Gearboxes
Our RW series miniature worm gear box assembly could be small, but it’s tough enough to take care of demanding power transfer applications. Constructed with machined aluminum housings and hardened metal input and output gears, they’ll deliver a long time of reliable performance.
Available in three standard output ratios and with two result shaft diameter options, it’s easy to find the Ever-Power correct miniature gearbox to your requirements. Each RW model worm equipment container assembly provides proportionally high torque values (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 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 speed is increased or reduced in proportion index G – GEAR BOXES – on blue – smallto the speed reduction ratio. Ever-Power has a full type of gearboxes and quickness reducers, and the elements 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 acceleration reducers or quickness increasers, and could 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 quickness increasers. The situations are molded glass-filled material making them extremely rugged and resistant to corrosive conditions. They are offered in a wide variety of ratios and are built with right hand or left hand worm gears. The output shafts may be solid or hollow, and load capacity is unaffected by path and rotation.
Worm gear rate 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 which range from conveyors to exercise devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the powered wheel advancing it by one stage and a blocking disc that locks the driven wheel in position between steps.
Compact design
Compact design is one of the key terms of the typical gearboxes of the BJ-Series. Further optimisation may be accomplished by using adapted gearboxes or unique gearboxes.
Low noise
Our worm gearboxes and actuators are extremely quiet. This is due to the very smooth operating of the worm equipment combined with the utilization of cast iron and high precision on component manufacturing and assembly. In connection with our precision gearboxes, we take extra care of any sound that can be interpreted as a murmur from the apparatus. Therefore the general noise level of our gearbox is definitely reduced to a complete minimum.
Angle gearboxes
On the worm gearbox the input shaft and output shaft are perpendicular to one another. This often proves to be 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.
Strong bearings in solid housing
The output shaft of the BJ worm gearbox is quite firmly embedded in the gear house and is ideal for immediate suspension for wheels, movable arms and other parts rather than having to build a separate suspension.
Self locking
For larger gear ratios,EP-Gear’s worm gearboxes provides a self-locking impact, 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 a wide selection of solutions.
Structural Features
The worm-gear reducer is made up 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 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 manufactured from 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 noise 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), supply the most competitive 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 provides like reference size 63 and is born like response to the ask for of our costumers since, upon mounting higher bearings in the output, bears greater axial loads that its analogous one in the MF-62 series. The rest of technical characteristic 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 next instructions must be taken into account:
It must be fixed on a flat 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 gear reducer needed to be painted, the essential oil seals must be covered to prevent them from drying and losing their seal.
The device work of the fittings setup in the output shafts need an ISO H7 or h6 margin for the hollow shaft.
Backdriving
It is smart to focus on this element when the gear reducer output shaft is driven rather than being a driver. Bearing in mind that among the features of this worm-gear reducer is 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. This is why, when the application needs total irreversibility, it is advisable to utilize external brakes with enough power to avoid slipping.
It may be said that the circumstances under which irreversibility can occur are as follows:
• Efficiency < 0,55 (observe table of technical features).
Maintenance
This sort 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 continuous and comes as standard, with high quality refined oil which includes 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; because of this its maintenance is not needed.

High reduction gear
Worm and wheel gear pairings provide large rate reduction ratios with only one gear pairing in a far more compact space in comparison to other styles of gears. You can expect up to a maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel equipment pairings may be the low level sound they produce. Some drawbacks will be the general low effectiveness and the actual fact that they generate heat.

Advantage of EP’s Worm Gears – “Cool rolled Worm Gears”
1) The hardness of the helicoid surface has been achieved by function hardening when the cold rolling was performed, providing Worm gears with better mechanical properties than machined worms due to reality that the metallic fibrous structure is not cut.

2) The surface hardness after chilly rolling is increased by 1.2 to at least one 1.3 times when compared with the hardness of the initial materials, and the hardness of the helicoid surface area increases to around HB240 to 260.

3) Frosty rolled worms are suitable 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 finish. Thus, EP-Precision Cool Rolled Worms give a smooth operation and long term durability.

Worm gears are made of a worm and a gear (sometimes referred to as a worm wheel), with non-parallel, non-intersecting shafts oriented 90 degrees to one another. The worm is certainly analogous to a screw with a V-type thread, and the apparatus is certainly analogous to a spur gear. The worm is normally the traveling 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 an individual start or multiple starts – and therefore 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. 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 amount of starts on the worm. (This is not the same as most other types of gears, where in fact the gear reduction is definitely 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 action causes friction and warmth, 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 equipment are made of dissimilar metals – for instance, the worm may be produced of hardened steel and the gear made of bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and equipment also contributes to quiet operation.) This makes worm gears suitable for use where noise should be minimized, such as for example in elevators. Furthermore, the use of a softer material for the gear means that it can absorb shock loads, like those skilled in large 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 used as speed reducers in low- to moderate-quickness applications. And, because their reduction ratio is based on the amount of gear teeth by itself, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are usually self-locking, which makes 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 tranny applications requiring high-ratio speed reduction in a restricted space using right angle (90°), non-intersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.

Because the efficiency of a worm gear drive depends upon the business lead angle and quantity of begins on the worm – and because increased performance is always a goal, the ratio ought to be kept as low as 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 can be ordered through the EP Equipment Guaranteed Same Day Shipment Program for the quickest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmitting needs.
Our worm gears provide smoothest, quietest kind of gearing.
They provide high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by decreasing ratios.
With some ratios, there is level of resistance to back driving.
Offered from 48 DP to 3 DP
Stocked as single, double and quad start configurations

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