worm gear box assembly

Ever-Power has been developing and manufacturing reliable, high performance gearboxes for over 20 years. RW Series miniature correct angle gearboxes offer high torque ideals with very low backlash in extremely compact frames. Three gear ratios are available to meet the needs of your unique application.
Order the Ever-Power RW Series worm equipment 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 small, but it’s difficult enough to handle demanding power transfer applications. Designed with machined aluminum housings and hardened metal input and output gears, they’ll deliver many years of reliable performance.
Available in three standard result ratios and with two output shaft diameter options, it’s easy to find the Ever-Power right miniature gearbox to your requirements. Each RW model worm gear box assembly provides proportionally high torque values (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 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
Very low backlash (2° backlash optimum)
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 rate is increased or decreased compared index G – GEAR BOXES – on blue – smallto the speed decrease ratio. Ever-Power includes a full type of gearboxes and speed reducers, and the components needed to build them, in an array of regular ratios and shaft choices as well as custom designs.
Helical, bevel, and miter gear boxes provide options of quickness reducers or velocity increasers, and could be driven in either path. All Ever-Power worm equipment speed reducers and right angle drives are produced for powerful in a large spectral range of applications. Typically worm equipment boxes are not used as velocity increasers. The cases are molded glass-filled materials making them extremely rugged and resistant to corrosive environments. They are offered in an array of ratios and are built with right hand or left hands worm gears. The output shafts may be solid or hollow, and load capability is unaffected by direction and rotation.
Worm gear rate reducers are made up of a screw (the worm) that drives a wheel (helical gear) or solitary enveloping wheel and are found in mechanical applications which range from conveyors to workout devices to robots.
Geneva mechanisms and assemblies are usually used to transform continuous rotary motion into intermittent rotary motion. The rotating drive wheel includes 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 in position between steps.
Compact design
Compact design is one of the key phrases of the standard gearboxes of the BJ-Series. Further optimisation may be accomplished by using adapted gearboxes or particular gearboxes.
Low noise
Our worm gearboxes and actuators are really quiet. This is due to the very smooth operating of the worm gear combined with the use of cast iron and high precision on element manufacturing and assembly. In connection with our precision gearboxes, we take extra treatment of any sound that can be interpreted as a murmur from the apparatus. So the general noise degree 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 each other. This frequently proves to be a decisive advantage making the incorporation of the gearbox considerably 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 quite firmly embedded in the gear house and is perfect for immediate suspension for wheels, movable arms and other parts rather than having to build a separate suspension.
Self locking
For larger equipment ratios,EP-Gear’s worm gearboxes provides a self-locking impact, 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 perfect 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 types of gear-reducer. This make sure they are perform efficiently under stressed circumstances, vibrations or any type of setback that can’t be avoided during 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. Due to the mechanical work of these two parts having top quality, excellent overall performance and low sound levels 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, top quality bearings, an EPOXY- impregnated finish ( 2 components), and grey-coloured SINGLE LAYER ENAMEL finish ( 2 components) ( RAL 7672), provide 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 provides like reference size 63 and is born like answer to the request of our costumers since, upon mounting higher bearings in the result, 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 create a gear reducer and also to make it work efficiently, the following 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 needed to be painted, the essential oil seals should be covered to avoid them from drying and losing their seal.
The device 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 focus on this aspect when the gear reducer result shaft is driven rather than being a driver. Considering that one of the top features of this worm-gear reducer is the fact that cannot be axle-powered by the output shaft (irreversibility), it is almost unattainable 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 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 as follows:
• Efficiency < 0,55 (find table of specialized features).
Maintenance
This sort of gear reducer is provided with a permanent lubrication, so it will 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 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 equipment pairings provide large speed decrease ratios with only one equipment pairing in a more compact space when compared with other styles of gears. You can expect up to maximum ratio of 100:1 with our products. Another advantage of the Worm and Wheel gear pairings is the low level noise they produce. Some disadvantages will be the general low efficiency and the actual fact that they generate heat.

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

2) The surface hardness after cool rolling is increased by 1.2 to 1 1.3 times when compared with the hardness of the original materials, and the hardness of the helicoid surface increases to around HB240 to 260.

3) Chilly rolled worms are suitable for miniature equipment applications since this can be rotated smoothly without damaging the worm wheels crafted from POM or various other soft materials.

4) Due to the implementation of the cold rolling method, the helicoid surface area of EP-Worm (M0.5 to 2.0) comes out with a mirror like complete. Thus, EP-Precision Chilly Rolled Worms provide 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 one another. The worm is analogous to a screw with a V-type thread, and the gear is usually analogous to a spur equipment. The worm is normally the generating component, with the worm’s thread advancing the teeth of the gear.

Like 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 turn (360 degrees) of the worm increases the equipment by one tooth. So a gear with 24 teeth provides a gear reduced amount of 24:1. For a multi-begin worm, the apparatus reduction equals the number of teeth on the gear, divided by the number of begins on the worm. (This is different from 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 apparatus is a mixture of sliding and rolling actions, but sliding contact dominates at high reduction ratios. This sliding action causes friction and temperature, which limits the effectiveness of worm gears to 30 to 50 percent. In order to minimize friction (and for that reason, warmth), the worm and gear are constructed with dissimilar metals – for instance, the worm may be produced of hardened steel and the gear manufactured from bronze or aluminum.

Although the sliding contact reduces efficiency, it provides very quiet operation. (The utilization of dissimilar metals for the worm and gear also plays a part in quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as in elevators. Furthermore, the use of a softer materials for the gear implies that it can absorb shock loads, like those skilled in heavy equipment or crushing devices.

The primary advantage of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They can also be utilized as speed reducers in low- to moderate-speed 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 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 a highly effective answer for power transmitting applications requiring high-ratio quickness reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.

Because the effectiveness of a worm equipment drive depends upon the business lead angle and amount of starts 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 will need to have the same diametral pitch and threads.

Our complete type of worms and worm gears can be ordered through the EP Equipment Guaranteed Same Day time Shipment Plan for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission 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 lowering ratios.
With some ratios, there is level of resistance to back driving.
Available from 48 DP to 3 DP
Stocked as single, dual and quad start configurations

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