Within an epicyclic or planetary gear train, several spur gears distributed evenly around 
the circumference run between a gear with internal teeth and a gear with external teeth on a concentric orbit. The circulation of the spur gear takes place in analogy to the orbiting of the planets in the solar system. This is how planetary gears obtained their name.
The elements of a planetary gear train can be divided into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In the majority of cases the casing is fixed. The driving sun pinion can be in the center of the ring equipment, and is coaxially arranged in relation to the output. The sun pinion is usually attached to a clamping system in order to offer the mechanical connection to the engine shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between your sun pinion and the ring equipment. The planetary carrier also represents the result shaft of the gearbox.
The sole reason for the planetary gears is to transfer the required torque. The number of teeth does not have any effect on the transmitting ratio of the gearbox. The number of planets can also vary. As the amount of planetary gears improves, the distribution of the strain increases and therefore the torque that can be transmitted. Increasing the number of tooth engagements also reduces the rolling power. Since only part of the total output needs to be transmitted as rolling power, a planetary gear is extremely efficient. The advantage of a planetary gear compared to a single spur gear lies in this load distribution. Hence, it is possible to transmit high torques wit
h high efficiency with a concise style using planetary gears.
Provided that the ring gear has a continuous size, different ratios can be realized by varying the number of teeth of sunlight gear and the number of tooth of the planetary gears. The smaller the sun gear, the higher the ratio. Technically, a meaningful ratio range for a planetary stage can be approx. 3:1 to 10:1, since the planetary gears and sunlight gear are extremely little above and below these ratios. Higher ratios can be acquired by connecting several planetary phases in series in the same band gear. In this instance, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques can be overlaid by having a band gear that is not set but is driven in virtually any direction of rotation. Additionally it is possible to repair the drive shaft to be able to pick up the torque via the ring gear. Planetary gearboxes have grown to be extremely important in lots of areas of mechanical engineering.
They have grown to be particularly well established in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High transmission ratios may also easily be performed with planetary gearboxes. Because of their positive properties and compact design, the gearboxes have many potential uses in commercial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to many planetary gears
High efficiency because of low rolling power
Nearly unlimited transmission ratio options due to combination of several planet stages
Appropriate as planetary switching gear because of fixing this or that section of the gearbox
Possibility of use as overriding gearbox
Favorable volume output
Suitability for a wide variety of applications
Epicyclic gearbox can be an automatic type gearbox where parallel shafts and gears arrangement from manual equipment box are replaced with an increase of compact and more reliable sun and planetary kind of gears arrangement as well as the manual clutch from manual power teach is certainly replaced with hydro coupled clutch or torque convertor which produced the transmission automatic.
The thought of epicyclic gear box is extracted from the solar system which is known as to an ideal arrangement of objects.
The epicyclic gearbox usually comes with the P N R D S (Parking, Neutral, Reverse, Drive, Sport) settings which is obtained by fixing of sun and planetary gears according to the need of the drive.
Ever-Power Planetary Equipment Motors are an inline answer providing high torque in low speeds. Our Planetary Gear Motors offer a high efficiency and provide excellent torque output in comparison with other types of equipment motors. They can manage a different load with reduced backlash and are greatest for intermittent duty operation. With endless decrease ratio options, voltages, and sizes, Ever-Power Products has a fully tailored gear motor remedy for you.
A Planetary Gear Engine from Ever-Power Items features one of our various types of DC motors coupled with among our uniquely designed epicyclic or planetary gearheads. A planetary gearhead includes an internal gear (sun gear) that drives multiple external gears (planet gears) generating torque. Multiple contact points across the planetary gear train permits higher torque generation in comparison to among our spur equipment motors. Subsequently, an Ever-Power planetary equipment motor has the capacity to handle different load requirements; the more gear stages (stacks), the bigger the strain distribution and torque transmitting.
Features and Benefits
High Torque Capabilities
Sleek Inline Design
High Efficiency
Capability to Handle Large Reduction Ratios
High Power Density
Applications
Our Planetary Equipment Motors deliver exceptional torque result and efficiency in a concise, low noise design. These characteristics in addition to our value-added features makes Ever-Power s equipment motors a great choice for all movement control applications.
Robotics
Industrial Automation
Dental Chairs
Rotary Tables
Pool Chair Lifts
Exam Room Tables
Massage Chairs
Packaging Eqipment
Labeling Eqipment
Laser Cutting Machines
Industrial Textile Machinery
Conveying Systems
Test & Measurement Equipment
Automated Guided Automobiles (AGV)
In an epicyclic or planetary gear train, several spur gears distributed evenly around the circumference run between a gear with internal teeth and a gear with exterior teeth on a concentric orbit. The circulation of the spur equipment occurs in analogy to the orbiting of the planets in the solar system. This is one way planetary gears acquired their name.
The parts of a planetary gear train could be split into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In nearly all cases the casing is fixed. The driving sun pinion can be in the heart of the ring equipment, and is coaxially arranged in relation to the output. Sunlight pinion is usually mounted on a clamping system in order to provide the mechanical connection to the engine shaft. During procedure, the planetary gears, which are mounted on a planetary carrier, roll between the sun pinion and the ring equipment. The planetary carrier also represents the result shaft of the gearbox.
The sole purpose of the planetary gears is to transfer the required torque. The number of teeth has no effect on the tranny ratio of the gearbox. The amount of planets can also vary. As the number of planetary gears increases, the distribution of the load increases and therefore the torque that can be transmitted. Raising the amount of tooth engagements also reduces the rolling power. Since just portion of the total result has to be transmitted as rolling power, a planetary gear is extremely efficient. The advantage of a planetary equipment compared to an individual spur gear is based on this load distribution. It is therefore possible to transmit high torques wit
h high efficiency with a compact style using planetary gears.
Provided that the ring gear has a constant size, different ratios can be realized by varying the number of teeth of sunlight gear and the amount of teeth of the planetary gears. The smaller the sun equipment, the greater the ratio. Technically, a meaningful ratio range for a planetary stage can be approx. 3:1 to 10:1, since the planetary gears and sunlight gear are extremely small above and below these ratios. Higher ratios can be acquired by connecting several planetary stages in series in the same ring gear. In this instance, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a ring gear that’s not set but is driven in virtually any direction of rotation. Additionally it is possible to fix the drive shaft in order to grab the torque via the band equipment. Planetary gearboxes have become extremely important in many regions of mechanical engineering.
They have grown to be particularly well established in areas where high output levels and fast speeds must be transmitted with favorable mass inertia ratio adaptation. High transmitting ratios may also easily be performed with planetary gearboxes. Because of their positive properties and compact design, the gearboxes have many potential uses in industrial applications.
The advantages of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to several planetary gears
High efficiency due to low rolling power
Almost unlimited transmission ratio options because of combination of several planet stages
Suitable as planetary switching gear due to fixing this or that section of the gearbox
Possibility of use as overriding gearbox
Favorable volume output
On the surface, it may appear that gears are being “reduced” in quantity or size, which is partially true. When a rotary machine such as for example an engine or electrical motor needs the output speed reduced and/or torque improved, gears are commonly used to accomplish the desired result. Gear “reduction” specifically refers to the swiftness of the rotary machine; the rotational rate of the rotary machine is usually “reduced” by dividing it by a gear ratio higher than 1:1. A gear ratio higher than 1:1 is achieved whenever a smaller equipment (decreased size) with fewer number of tooth meshes and drives a more substantial gear with greater quantity of teeth.
Gear reduction has the opposite effect on torque. The rotary machine’s result torque is increased by multiplying the torque by the apparatus ratio, less some effectiveness losses.
While in lots of applications gear decrease reduces speed and improves torque, in other applications gear reduction is used to increase quickness and reduce torque. Generators in wind generators use gear reduction in this fashion to convert a relatively slow turbine blade swiftness to a high speed capable of producing electricity. These applications make use of gearboxes that are assembled opposite of those in applications that reduce swiftness and increase torque.
How is gear decrease achieved? Many reducer types can handle attaining gear decrease including, but not limited by, parallel shaft, planetary and right-angle worm gearboxes. In parallel shaft gearboxes (or reducers), a pinion gear with a particular number of the teeth meshes and drives a larger gear with a greater number of teeth. The “decrease” or equipment ratio can be calculated by dividing the number of the teeth on the large equipment by the number of teeth on the tiny gear. For instance, if a power motor drives a 13-tooth pinion equipment that meshes with a 65-tooth equipment, a reduced amount of 5:1 is certainly achieved (65 / 13 = 5). If the electrical motor speed can be 3,450 rpm, the gearbox reduces this acceleration by five instances to 690 rpm. If the motor torque can be 10 lb-in, the gearbox increases this torque by a factor of five to 50 lb-in (before subtracting out gearbox effectiveness losses).
Parallel shaft gearboxes many times contain multiple gear models thereby increasing the gear reduction. The total gear decrease (ratio) depends upon multiplying each individual equipment ratio from each equipment established stage. If a gearbox includes 3:1, 4:1 and 5:1 gear sets, the full total ratio is 60:1 (3 x 4 x 5 = 60). In our example above, the 3,450 rpm electric motor would have its velocity reduced to 57.5 rpm by using a 60:1 gearbox. The 10 lb-in electric electric motor torque would be increased to 600 lb-in (before efficiency losses).
If a pinion gear and its mating equipment have the same quantity of teeth, no reduction occurs and the gear ratio is 1:1. The apparatus is called an idler and its main function is to change the path of rotation instead of reduce the speed or raise the torque.
Calculating the apparatus ratio in a planetary equipment reducer is much less intuitive since it is dependent on the amount of teeth of sunlight and band gears. The earth gears become idlers , nor affect the gear ratio. The planetary equipment ratio equals the sum of the number of teeth on the sun and ring equipment divided by the amount of teeth on the sun gear. For instance, a planetary established with a 12-tooth sun gear and 72-tooth ring gear has a gear ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear models can perform ratios from about 3:1 to about 11:1. If more equipment reduction is needed, additional planetary stages may be used.
The gear reduction in a right-angle worm drive is dependent on the amount of threads or “starts” on the worm and the amount of teeth on the mating worm wheel. If the worm has two begins and the mating worm wheel offers 50 the teeth, the resulting gear ratio is 25:1 (50 / 2 = 25).
Whenever a rotary machine such as for example an engine or electric electric motor cannot provide the desired output speed or torque, a equipment reducer may provide a great choice. Parallel shaft, planetary, right-angle worm drives are common gearbox types for achieving gear reduction. Contact Groschopp today with all of your gear reduction questions.