Leading Planetary Gear Manufacturers

Planetary gears are crucial in complex automotive transmissions, drive trains and other applications where complex gear ratios are required for smooth torque transmission. These complex and drastic gear ratios are possible since planetary gears have the ability to produce different gear ratios depending on which gear is used as the input, which gear is the output and which gear is stationary. Read More…

Planetary Gears Planetary gears, or epicyclic gears, consist of three or more outer gears, referred to as planet gears, which revolve around a central gear, also known as a sun gear. The allusions to the solar system refer to the design of the planetary gear; all of the gears in the planet gear are in one plane and are grouped around each other much like the planets surround the sun.

Omni G & M Corporation is a leading gear fabricator specializing in precision machined and custom solutions in a variety of sizes and types. Please check out Omni G & M’s website or call a friendly personnel member today!

Omni Gear & Machine Corporation $$$

Gears are what we do best, and we are experts in our field. We have three generations of experience backing our company, and we use all of it to benefit you in any way possible.

Commercial Gear & Sprocket Company, Inc. $$$

Gear Motions is a leading gear manufacturer specializing in supplying custom cut and ground gears. Our wide range of precision gear manufacturing capabilities and services deliver quality gears to meet almost any application.

Gear Motions, Inc. $$$

Manufacturing industrial and commercial gears is what Houston Gear USA does. We produce gears from 1 3/4 DP – 200 DP in a choice of materials. Choose from spur gears, custom gears, helical gears, double helicals, splines, straight bevel gears, worm gears, sprockets, and herringbone gears.

Houston Gear USA, Inc. $$$

At Cage Gear & Machine, we specialize in custom large gear machining and repair as well as large manual machining. We can manufacture gears from 2" outside diameter all the way to 180" outside diameter. If you don't need complete parts, we can also provide cut teeth only operations or inspection services. And don't throw out those damaged gears just yet. We can save you thousands of dollars...

Cage Gear & Machine, LLC $$$

With over a century of experience, The Adams Company has established themselves an outstanding reputation for quality custom gear and shaft production. We continue to outmatch the competition, whether it is from our original designing and manufacturing hobbing equipment to investigating the latest technologies in gear inspection, hobbing, and guideless shaping. We offer a range of products...

The Adams Company $$$

Cleveland Gear Company has specialized in worm gear technology including industrial gears, helical gears, worm gears and precision gears since 1912. Applications include steel production, electric power generation, and material transport. Fulfilling your exact requirements is what has and continues to make Cleveland Gear one of the top manufacturers of gearing and enclosed gear drives.

Cleveland Gear Company $$$
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placeholder image Omni Gear & Machine Corporation Commercial Gear & Sprocket Company, Inc. Gear Motions, Inc. Houston Gear USA, Inc. Cage Gear & Machine, LLC The Adams Company Cleveland Gear Company

Planet gears are also used in industrial automation and motion control applications such as wind turbines, bicycles, helicopters, heavy machinery, electric motors and paper feeders. Some advantages of planetary gears include high power density, increased torque capability, pure torsional reactions and large reduction in small volumes. However, there are disadvantages to using planet wheels as well, which include design complexity, high bearing loads and inaccessibility. Planetary gears are often used in industries such as marine, automotive, mining, military, commercial, construction, chemical processing, aerospace and agricultural.

Planetary gears typically come in sets of two or more that operate on or inside larger industrial gears; these are referred to as planetary gear systems. In a planetary gear system the exterior gears interlock with the inward-facing teeth of a larger internal gear, increasing the output speed of the large outer gear through rotational torque applied to the internal sun gear. The four main components that make up these planetary gear sets are the sun gear, the ring gear, the planet pinions and the planet carrier.

The sun gear is the center of the planetary gear system. The ring gear, or internal gear, is named due to both its shape and its internal teeth and connects the epicyclic gear set to an output shaft. The planetary pinions are gears with a small number of teeth designed to mesh with a larger wheel, which is the ring gear. Engaged simultaneously by the sun gear, each of the planetary gears applies torque to the ring gear, which in turn supplies torque to the output shaft.

The planetary pinions are attached to a rotating plate, which is the planet carrier. In order for the planetary gear set to function, either the sun gear, planet carrier or ring gear must be held stationary. While one is held stationary, one of the remaining two components serves as the input and provides power to the system, while the other serves as the output and receives power from the system. The ratio of input rotation to output rotations depends upon two key factors: the number of teeth in each gear and which component is held stationary.

Planetary Gears Informational Video

 

Gears Power Pages

Bevel Gears

Bevel Gears

A bevel gear is a toothed rotating machine element used to transfer mechanical energy or shaft power between shafts that are intersecting, either perpendicular or at an angle. This results in a change in the axis of rotation of the shaft power...

Helical Gears

Helical Gears

A gear is a particular kind of simple machine that controls the strength or direction of a force. A gear train is made up of multiple gears that are combined and connected by their teeth. These gear trains allow energy to move from...

Planetary Gears

Planetary Gear System

A planetary gear is an epicyclic gear that consists of a central gear, referred to as the sun gear and serves as the input gear, which has three or more gears that rotate around it that are referred to as planets. The planet gears engage with a ring gear that encircles the sun...

Plastic Gears

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Spur Gears

Spur Gears

A spur gear is a cylindrical toothed gear with teeth that are parallel to the shaft and is used to transfer mechanical motion and control speed, power, and torque between shafts. They are the most popular types of cylindrical gears and...

Worm Gears

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A worm gear is a staggered shaft gear that creates motion between shafts using threads that are cut into a cylindrical bar to provide speed reduction. The combination of a worm wheel and worm are the components of a worm gear...

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Lead Screw

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