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What are the disadvantages of a Planetary Gearbox
Some disadvantages of planetary gearboxes include: A need for constant lubrication, high bearing loads, inaccessibility, and complex design.
Related Questions
What are planetary gearboxes?
Planetary Gearboxes are high-precision, motion-control devices that create a substantial amount of torque for their size, have high torsional stiffness, and low backlash--this is what makes them suited for a wide-range of applications.
Are spur and planetary gearboxes bi-directional?
Yes, both spur and planetary gearboxes are designed to be used for bi-directional operation. The gear arrangement and the direction the input shaft rotates of the gearbox will determine the rotation of the output shaft. For bidirectional applications, the backlash of the gearbox should be taken into consideration.
What are planetary gears?
Planetary Gears refers to a system of gears that consists of three main components: The Sun Gear, Ring Gear, and two or more Planet Gears. The Sun gear is located at the center, the ring gear is the outermost gear, and the planet gears are the gears surrounding the sun and inside the ring gear.
What is a "Sun Gear"?
A Sun gear is a gearwheel in a planetary gear system, that rotates around its own axis and has other gears (planet gears) that rotate around it. Much like the Sun and planets in our solar system.
How many planet gears are in a gearbox?
The amount of planetary gears in a gearbox varies based on the gear ratio. Most planetary gearboxes have from two to five planet gears. When looking at planetary gears, the strength of the gearbox is usually determined by the size of the sun gear. Larger sun gears will allow for higher torque values.
What are the advantages of a planetary gear?
High precision, right angle configurations, breaking system, low noise, and maintenance free.
What is a planetary gearbox?
The term Planetary Gears refers to a system of gears that consists of three main components: Sun Gear, Ring Gear, and Planet Gears. The Sun gear is located at the center, the ring gear is the outermost gear, and the planet gears are the gears surrounding the sun and inside the ring gear.
What are the advantages of a Planetary Gearbox?
Planetary gearboxes offer high power density, large reduction in a small volume, pure torsional reactions, multiple kinematic combinations, and coaxial shafting.
What are the disadvantages of a Planetary Gearbox?
Some disadvantages of planetary gearboxes include: A need for constant lubrication, high bearing loads, inaccessibility, and complex design.
How should I select my gearbox?
There are several types of gearboxes manufactured world-wide. One of the major differences between individual gearboxes is their performance characteristics. Selecting from the various gearbox types, depends on your application. Gearboxes are available in many ratios, sizes, efficiency, and backlash characteristics. These design factors will affect the performance and cost of your gearbox. There are many types of gearboxes including: Bevel, Helical, Spur, Worm, and Planetary.
What industries are planetary gearboxes typically used in?
Planetary gearboxes can be used in a variety of industries. Some typical industries include: Aerospace, Agriculture, Automotive, Construction, Food Processing, Marine Industry, and Power Plants.
What is the difference between a planetary gearbox with helical gears and one with spur gears?
Planetary Units with helical gears, rather than spur gears, have higher torque capacity and run much more quietly.
What are planetary gearboxes?
Planetary Gearboxes are high-precision, motion-control devices that create a substantial amount of torque for their size, have high torsional stiffness, and low backlash--this is what makes them suited for a wide-range of applications.
How do planetary gearboxes work?
A planetary gearbox takes a high-speed, low torque input from a motor, then reduces speed and increases torque at the output by the gear ratio.
How can I tell if my planetary gearbox has an excess of friction?
Too much lubrication, out-of-tolerance components, and poor gear or bearing quality can cause an excess in friction and drag. Each ratio and size has an acceptable range for drag and peak levels should be measured in both directions.
Should I use grease or oil to lubricate my planetary gearbox?
Both oil and grease can effectively lubricate planetary gearboxes. However grease has the advantage of providing lubrication for the lifetime of the gearbox--eliminating a lot of maintenance. Grease allows mounting in any orientation and eliminates any concerns about leakage. Oil requires maintenance and re-lubrication over a period of time--usually once every few thousand hours.
Orientation with oil lubrication can also be difficult and restricted. A common misconception is that oil-filled units always run at a cooler temperature than grease-lubricated gears. Whereas, the sealing required for an oil-filled gear head often generates more heat than the oil saves. It is important to take these notions into mind when deciding on a lubrication for your application.
Do you need to lubricate a planetary gearbox?
Yes. It is important to keep your planetary gears lubricated with either an oil or grease lubricant. The type of lubricant needed will depend on your application and planetary gearbox. Check with your manufacturer to see what lubrication you should be using.
What is an Inline Planetary Gearbox?
A system of gears that consists of three main components: The Sun Gear, Ring Gear, and two or more Planet Gears. The Sun gear is located at the center, the ring gear is the outermost gear, and the planet gears are the gears surrounding the sun and inside the ring gear.
What materials are used in Inline Planetary Gearboxes?
The materials in an inline planetary gearbox are usually steel, iron, aluminum, and brass. Unlike many other gearboxes, spur gearboxes will be made of plastics such as polycarbonate or nylon.
Are Planetary right angle gearboxes maintenance free?
Planetary right angle gearboxes are maintenance free due to being loaded at the factory with a lifetime supply of lubrication. This makes them never to run out of lubrication for the planet elements.
Why would you use a right angle gearbox?
The main reason to use a right angle gearbox is low space applications. When there is not enough room to add an in-line gearbox to a motor, the use of a right angle gearbox will allow you to fit a much larger motor and gearbox into a system or application.
What types of motors can be used to drive a right angle gearbox?
A right angle gearbox can accept many different types of motors. Any servo, stepper, or brushless AC or DC motors can drive the gearbox.
What are the advantages of planetary gearboxes?
The main advantages of planetary gearboxes are that they have high power density, are compact, have high efficiency in power transmission, greater stability, and good load distribution among planetary gears.
What is the average lifetime of an Inline Planetary Gearbox?
The average life expectancy of an Inline Planetary Gearbox is around 30,000 operation hours.
How do planetary gear reducers work?
All gear reducers work in a comparable fashion. The directions the gears rotate are dependent on the input direction and arrangement of the gears. For example, if the initial gear is rotating in a clockwise direction, the gear it engages will rotate counterclockwise. This continues down the line for all gears.
The combination of different size gears and the number of teeth on each gear plays an important role in speed of the shaft and the output torque. High gear ratios allow for more output torque and lower speeds, while lower gear ratios allow for higher output speed and less output torque.
The combination of different size gears and the number of teeth on each gear plays an important role in speed of the shaft and the output torque. High gear ratios allow for more output torque and lower speeds, while lower gear ratios allow for higher output speed and less output torque.
What material are planetary gears made of?
Planetary gears are made of hardened steel to promote the longest lifetime possible.
How many planet gears are in a gear reducer?
The amount of planetary gears in a gear reducer changes based on specific application requirements. Most planetary gear reducer have two or more planetary gears.
How do planetary gearboxes work?
A planetary gearbox takes a high-speed, low torque input from a motor, then reduces speed and increases torque at the output by the gear ratio.
How can I tell if my planetary gearbox has an excess of friction?
Too much lubrication, out-of-tolerance components, and poor gear or bearing quality can cause an excess in friction and drag. Each ratio and size has an acceptable range for drag and peak levels should be measured in both directions.
Should I use grease or oil to lubricate my planetary gearbox?
Both oil and grease can effectively lubricate planetary gearboxes. However grease has the advantage of providing lubrication for the lifetime of the gearbox--eliminating a lot of maintenance. Grease allows mounting in any orientation and eliminates any concerns about leakage. Oil requires maintenance and re-lubrication over a period of time--usually once every few thousand hours.
Orientation with oil lubrication can also be difficult and restricted. A common misconception is that oil-filled units always run at a cooler temperature than grease-lubricated gears. Whereas, the sealing required
Orientation with oil lubrication can also be difficult and restricted. A common misconception is that oil-filled units always run at a cooler temperature than grease-lubricated gears. Whereas, the sealing required
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