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Gear types, gear materials, design specifications and applications

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Gear types, gear materials, design specifications and applications

February 01
13:30 2023

Gear is a power transmission element.  Gears determine the torque, speed, and direction of rotation of all the machine components being driven.  Broadly speaking, gear types can be divided into five main categories.  They are cylindrical gear, bevel gear, helical gear, rack and worm gear.  There are a lot of intricacies in different types of gears.  In fact, the selection of gear type is not an easy process.  It depends on many considerations.  The factors that affect it are physical space and shaft arrangement, gear ratio, load, precision and quality level, etc. 

Gear type

Gear types used in mechanical power transmission

According to the industrial application, many gears are manufactured with different materials and different performance specifications. These gears have a variety of capacities, sizes and speed ratios, but their main function is to convert the input of the prime mover into an output with high torque and low RPM. From agriculture to aerospace, from mining to paper making and pulp industry, these gear series can be used in almost all industries.

Cylindrical gears are spur gears with radial teeth, which are used to transmit power and motion between parallel shafts. These gears are widely used for speed increase or speed reduction, high torque and positioning system resolution. These gears can be mounted on hubs or shafts. Gears have different sizes, designs, shapes, and also provide various features and functions to meet different industrial requirements.

Materials used

Cylindrical gears are made of high-quality materials, such as:

Metals – steel, cast iron, brass, bronze and stainless steel.

Plastics – Acetal, nylon and polycarbonate.

The use of the materials used to make these gears should bear in mind certain factors, including design life, power transmission requirements, and noise generation.

Important specifications to be considered

Gear center

aperture

Shaft diameter

Use of cylindrical gears

These gears are widely used in many fields, including

automobile

textile

industrial engineering

Bevel gear

Bevel gear is a mechanical device used to transmit mechanical power and motion. These gears are widely used to transmit power and motion between non parallel shafts and are designed to transmit motion between intersecting shafts, usually at right angles. The teeth on bevel gears can be straight, helical or hypoid. Bevel gears are suitable when it is necessary to change the direction of rotation of the shaft.

Materials used

The use of the materials used to make these gears should bear in mind certain factors, including design life, power transmission requirements, and noise generation. Some important materials used are:

Metals – steel, cast iron and stainless steel.

Plastics – Acetal and polycarbonate.

Important specifications to be considered

Gear center

aperture

Shaft diameter

Use of bevel gears

These gears are widely used in many fields, including:

Automobile industry

textile industry

Industrial engineering products

Helical gear

Helical gear is a kind of popular gear. Its teeth are cut at a certain angle, so it can make the meshing between gears more smooth and smooth. Helical gear is an improvement on cylindrical gear. The teeth on helical gears are specially chamfered to face the gears. When the two teeth on the gear system mesh, it starts to contact at one end of the teeth, and gradually expands with the rotation of the gear until the two teeth are fully engaged. Gears have different sizes, shapes and designs to meet customer specifications.

Materials used

These gears can be made of high-quality materials, including stainless steel, steel, cast iron, brass, etc., depending on the application.

Use of helical gears

These gears are used in areas where high speed, high power transmission or noise prevention are important.

automobile

textile

space flight

Conveyor

Rack

article source: https://www.belongear.com/news/gear-types-gear-materials-design-specifications-and-applications/

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