Within an epicyclic or planetary gear train, several spur gears distributed evenly around the circumference operate between a gear with internal teeth and a gear with external 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 components of a planetary gear train can be divided into four main constituents.
The housing with integrated internal teeth is known as a ring gear. In nearly all cases the housing is fixed. The driving sun pinion is usually in the center of the ring gear, and is coaxially organized 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 installed on a planetary carrier, roll between your sunlight pinion and the band gear. 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 does not have any effect on the transmitting ratio of the gearbox. The amount of planets may also vary. As the number of planetary gears raises, the distribution of the load increases and therefore the torque which can be transmitted. Raising the number of tooth engagements also decreases the rolling power. Since just part of the total output needs to be transmitted as rolling power, a planetary equipment is incredibly efficient. The advantage of a planetary equipment 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.
So long as the ring gear has a continuous size, different ratios could be realized by various the number of teeth of the sun gear and the number of the teeth of the planetary gears. The smaller the sun gear, the greater the ratio. Technically, a meaningful ratio range for a planetary stage is usually approx. 3:1 to 10:1, because the planetary gears and sunlight gear are extremely small above and below these ratios. Higher ratios can be obtained by connecting several planetary levels in series in the same band gear. In this case, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a ring gear that is not set but is driven in any direction of rotation. Additionally it is possible to fix the drive shaft in order to pick up the torque via the ring equipment. Planetary gearboxes have grown to be extremely important in lots of areas of mechanical engineering.
They have grown to be particularly more developed in areas where high output levels and fast speeds must be transmitted with favorable mass inertia ratio adaptation. High transmission ratios can also easily be achieved with planetary gearboxes. Because of their positive properties and small design, the gearboxes possess many potential uses in industrial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to several planetary gears
High efficiency due to low rolling power
Nearly unlimited transmission ratio options due to combination of several planet stages
Suitable as planetary switching gear because of fixing this or that part of the gearbox
Chance for use as overriding gearbox
Favorable volume output
Suitability for a wide selection of applications
Epicyclic gearbox is an automatic type gearbox in which parallel shafts and gears set up from manual gear 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 train is certainly replaced with hydro coupled clutch or torque convertor which in turn made the transmission automatic.
The idea of epicyclic gear box is taken from the solar system which is known as to the perfect arrangement of objects.
The epicyclic gearbox usually comes with the P N R D S (Parking, Neutral, Invert, Drive, Sport) modes which is obtained by fixing of sun and planetary gears based on the require of the drive.
Ever-Power Planetary Gear Motors are an inline remedy providing high torque at low speeds. Our Planetary Gear Motors provide a high efficiency and provide excellent torque output in comparison with other types of equipment motors. They can manage a varying load with minimal backlash and are greatest for intermittent duty procedure. With endless decrease ratio options, voltages, and sizes, Ever-Power Products has a fully tailored gear motor solution for you.
A Planetary Gear Motor from Ever-Power Items features one of our various types of DC motors in conjunction with one of our uniquely designed epicyclic or planetary gearheads. A planetary gearhead consists of an internal gear (sun gear) that drives multiple outer gears (planet gears) generating torque. Multiple contact factors across the planetary gear teach permits higher torque generation compared to one of our spur gear motors. In turn, an Ever-Power planetary gear motor has the ability to handle numerous load requirements; the more gear stages (stacks), the higher 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 effectiveness in a concise, low noise design. These characteristics furthermore to our value-added capabilities makes Ever-Power s gear motors a great choice for all motion 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 Vehicles (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 program. This is one way planetary gears obtained their name.
The components of a planetary gear train can be split into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In nearly all cases the housing is fixed. The driving sun pinion is definitely in the heart of the ring equipment, and is coaxially organized in relation to the output. The sun pinion is usually mounted on a clamping system to be able 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 band gear. The planetary carrier also represents the output shaft of the gearbox.
The sole purpose of the planetary gears is to transfer the required torque. The amount of teeth has no effect on the transmitting ratio of the gearbox. The number of planets may also vary. As the amount of planetary gears boosts, the distribution of the load increases and then the torque which can be transmitted. Increasing the amount of tooth engagements also decreases the rolling power. Since just area of the total output has to be transmitted as rolling power, a planetary equipment is incredibly efficient. The advantage of a planetary equipment compared to a single spur gear lies in this load distribution. It is therefore possible to transmit high torques wit
h high efficiency with a concise style using planetary gears.
So long as the ring gear has a continuous size, different ratios could be realized by varying the amount of teeth of the sun gear and the number of teeth of the planetary gears. The smaller the sun gear, the higher the ratio. Technically, a meaningful ratio range for a planetary stage is approx. 3:1 to 10:1, since the planetary gears and the sun gear are extremely small above and below these ratios. Higher ratios can be obtained by connecting many planetary stages in series in the same band gear. In cases like this, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques can 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 repair the drive shaft to be able to pick up the torque via the band gear. Planetary gearboxes have become extremely important in many regions of mechanical engineering.
They have grown to be particularly more developed in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High transmission ratios can also easily be achieved with planetary gearboxes. Because of their positive properties and small design, the gearboxes possess many potential uses in industrial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to many planetary gears
High efficiency due to low rolling power
Almost unlimited transmission ratio options because of mixture of several planet stages
Appropriate as planetary switching gear due to fixing this or that portion 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 result speed reduced and/or torque improved, gears are commonly utilized to accomplish the required result. Gear “reduction” specifically refers to the speed of the rotary machine; the rotational rate of the rotary machine is certainly “reduced” by dividing it by a gear ratio greater than 1:1. A gear ratio greater than 1:1 can be achieved whenever a smaller gear (reduced size) with fewer number of the teeth meshes and drives a more substantial gear with greater number of teeth.
Gear reduction has the opposite influence on torque. The rotary machine’s output torque is increased by multiplying the torque by the apparatus ratio, less some effectiveness losses.
While in lots of applications gear reduction reduces speed and increases torque, in other applications gear reduction is used to improve swiftness and reduce torque. Generators in wind generators use gear reduction in this fashion to convert a comparatively slow turbine blade speed to a high speed capable of generating electricity. These applications use gearboxes that are assembled reverse of these in applications that decrease velocity and increase torque.
How is gear decrease achieved? Many reducer types are capable of attaining gear reduction including, but not limited by, parallel shaft, planetary and right-angle worm gearboxes. In parallel shaft gearboxes (or reducers), a pinion gear with a certain number of the teeth meshes and drives a larger gear with a lot more teeth. The “decrease” or gear ratio is usually calculated by dividing the amount of teeth on the large equipment by the number of teeth on the tiny gear. For instance, if an electric motor drives a 13-tooth pinion equipment that meshes with a 65-tooth gear, a reduction of 5:1 is usually achieved (65 / 13 = 5). If the electric motor speed is definitely 3,450 rpm, the gearbox reduces this velocity by five occasions to 690 rpm. If the engine torque is definitely 10 lb-in, the gearbox boosts this torque by one factor of five to 50 lb-in (before subtracting out gearbox efficiency losses).
Parallel shaft gearboxes many times contain multiple gear units thereby increasing the apparatus reduction. The total gear decrease (ratio) depends upon multiplying each individual equipment ratio from each gear set stage. If a gearbox includes 3:1, 4:1 and 5:1 gear pieces, 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 equipment and its mating gear have the same number of teeth, no reduction occurs and the gear ratio is 1:1. The gear is called an idler and its own primary function is to improve the path of rotation rather than decrease the speed or boost the torque.
Calculating the gear ratio in a planetary gear reducer is less intuitive since it is dependent on the number 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 sunlight and ring gear 
divided by the number of teeth on the sun gear. For example, a planetary set with a 12-tooth sun gear and 72-tooth ring gear has a gear ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear pieces can perform ratios from about 3:1 to about 11:1. If more equipment reduction is necessary, additional planetary stages may be used.
The gear decrease in a right-angle worm drive is dependent on the number 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 provides 50 tooth, the resulting gear ratio is 25:1 (50 / 2 = 25).
Whenever a rotary machine such as for example an engine or electric engine cannot supply the desired output speed or torque, a gear reducer may provide a great choice. Parallel shaft, planetary, right-position worm drives are common gearbox types for achieving gear reduction. Contact Groschopp today with all of your gear reduction questions.