Pronunciation: [bˈɛvə͡l ɡˈi͡ə] (IPA) 
The word "bevel gear" is spelled phonetically as bɛ:vəl gɪər. The first syllable, "bev," is pronounced with a short "e" sound and a "v" sound. The second syllable, "el," uses an "e" sound and a "l" sound. "Gear" is pronounced with a soft "g" sound and a long "e" sound. "Bevel" refers to the angled teeth on the gear's surface. This type of gear is often used to transmit motion between intersecting axes.
A bevel gear is a type of gear that consists of two intersecting shafts with teeth cut at an angle, allowing for a smooth transfer of motion and power between the shafts that are not parallel to each other. It is a specialized gear used primarily to transmit power between shafts that are located at right angles, or at any other angle ranging from 0 to 180 degrees.
The teeth of a bevel gear are shaped like a cone, allowing for a meshing engagement between the two gears. The angle at which the teeth are cut is known as the pitch angle, and it determines the speed and torque ratio of the gear system. Bevel gears are often used in applications where speed reduction or increase is required, as well as redirection of power.
One of the distinctive features of bevel gears is their ability to change the direction of rotation, allowing the power to be transmitted from one shaft to another while changing the orientation of the power flow. This characteristic makes bevel gears suitable for many different applications, including in vehicles, machinery, and industrial equipment.
In summary, a bevel gear is a gear type consisting of two shafts with teeth cut at an angle. It is used to transmit power smoothly and efficiently between shafts located at different angles, allowing for speed reduction, redirection of power, and change in the direction of rotation.
The word "bevel" originated from the Middle French word "bevel" which means "slope" or "slant". The term was used to describe a tool called a "bevel square" that had an adjustable blade capable of measuring or marking angles other than right angles. This tool was often used by carpenters and masons. Over time, the word "bevel" came to be associated with any object or part that had a sloping or angled surface. In the case of a bevel gear, it refers to the special type of gear that has teeth that are cut at an angle, allowing them to mesh and transmit power between intersecting shafts.
