Spur Gear Production and Gear Manufacturing Turkey is our second post in the gear production series. We will discuss all about Spur Gears; the manufacturing of spur gears, production methods of gears, industry and gear production in Turkey, the usages and gear manufacturing in Turkey in general.

All About Spur Gears - What They Are and How They Work

Gears are a very prevalent type of mechanical component. They can be found in almost any mechanical device with rotating parts. They’re toothed mechanical transmission elements that let machines transfer mechanical power between components. This article examines a specific form of gear, the spur gear, and describes what it is and how it is used in various devices.

How Spur Gears Work

Spur gears are the most frequent form of gear. Straight teeth are cut or placed parallel to the gear’s shaft on a round gear body, also known as straight-cut gears. These gears use the parallel axes design to transmit mechanical power when connected in pairs. They can be connected between another spur gear, an interior gear (or in a planetary gear system), or a gear rack, depending on the application (such as in a rack and pinion gear pair). Their shafts are coplanar and parallel.

The spur gear tooth design’s simplicity provides for a high level of efficiency as well as easier manufacturing. Spur gears also have an absence of axial load (i.e., the applied load is parallel to the gear shaft), can handle high speeds and loads, and have high efficiency rates. Because of their involute profile, they do not have an axial load. The most common gearing mechanism is an involute gear profile. The profiles of the teeth in an involute gear are involutes of a circular. An involute curve is one that is influenced by another form or curve. It’s the path that an ideal string takes as it loops around with a curve. Spur gears only generate radial forces due to their shape. At the place where the involutes meet, an involute gear tooth engages with another gear. As the gears spin, the point of contact moves along the tooth surfaces, and the line of pressure is parallel to the two base circles. The gears adhere to the core principle of gearing in this fashion, which states that the proportion of the gears’ angular velocities must remain constant all through the mesh.

The amount of stress encountered by the gear teeth, as well as the noise created during high-speed applications, are some of the downsides of spur gears. This is why they’re usually only utilized for lower-speed applications, although if noise isn’t an issue, they can be used for higher-speed applications as well.

External and internal spur gears are the two kinds of spur gears. External gears have teeth cut into the exterior cylinder surface that forms the gear. Two outside gears mesh and rotate in different directions. The teeth of an internal gear are carved inside that surface of its circular structure. A smaller external gear rotates in the same direction as an inner spur gear, and the two or even more gears spin in the same direction. So because shafts can be early onset together, internal gear combinations occupy less space than exterior gear assemblies.

Spur gears can be produced out of a number of metals as well as plastics like nylon or polycarbonate. Plastic spur gears are quieter, but they’re not as sturdy and can’t carry as much weight. Spur gears, unlike the other gear types, do not suffer from significant slippage losses, resulting in good transmission efficiency.



Spur gears are employed in various of mechanical applications, including clocks, electrical screwdrivers, compressors, irrigation systems, materials handling, power station machinery, and textiles washing and drying machines, to name a few. Much farther than two spur gears could be utilized in a gear train if more gear reduction is required for an application.

They’re suitable for applications that need to reduce speed while increasing torque, such as crushing machinery. Spur gears are noisier than some other kinds of gears, therefore they’re not commonly seen in cars, but they’re common in aircraft engines. The teeth of a spur gear contact with the teeth of another gear every time they engage, causing a noise.


The purpose of this essay was to provide an overview of spur gears. Consult our other guides for additional information on related items, or contact us to find possible projects or examine product specifications.


Other Articles

The purpose of this essay was to provide an overview of spur gears. Consult our other guides for additional information on related items, or contact us to find possible projects or examine product specifications.

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