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Understanding The Fundamentals Of Bevel Gears

October 18, 2022

If you’re in the market for new gear, then you’ve probably come across the term “bevel gear.” But what exactly is bevel gear? In this blog post, we’ll give you a rundown of everything you need to know about bevel gears, from how they work to the different types available. By the end, you should have a better understanding of whether or not these gears are right for your needs.



How are bevel gears different from other gears?



Bevel is one type of gear, and there are many different types of gear like spur gears, helical gears, herringbone gears, and worm gears. These gears have teeth that are cut at an angle, while other gears have straight teeth. They can mesh together in order to transfer motion between two shafts that are not parallel to each other. 

Different types of bevel gears: Straight gears and spiral gears


There are two main bevel gear types: straight gears and spiral gears.


Straight gears are the most common bevel gear type. They are used in a wide variety of applications, from small motors to large industrial machinery. Straight gears have teeth that are cut at a constant angle. The teeth of the mating cones often mesh together in sudden contact in straight gears, which leads to shock loading.


Spiral bevel gears are less common than straight gears, but they offer some advantages over their counterpart. Spiral gears have teeth that are cut at an angle that gradually increases or decreases along the length of the gear. In spiral gears, the teeth are subjected to gradual loading. This results in gear with a more efficient transfer of power and less noise.


Applications of bevel gears


There are many potential applications for bevel gears. Some of the most common applications include:


-Transferring motion between two shafts that are at right angles to each other

-Increasing or decreasing torque

-Changing the direction of rotation

-Reducing vibration and noise levels

Airplanes, cement mills, gearboxes (known as bevel gearboxes), cooling towers, sand mixers, forklifts, ships and even mining equipment make extensive use of bevel type of gears and are excellent bevel gear examples.


How do bevel gears work


These gears are effective in transmitting motion between two shafts that are at an angle to each other. The teeth on these gears are cut at an angle so that they mesh together correctly. A bevel gear can be either straight-cut or spiral-cut. Spiral-cut gears have teeth that are curved, while straight-cut gears have teeth that are flat.


A bevel gear works by meshing the teeth of two gears together. The gear with the smaller number of teeth will rotate faster than the gear with the larger number of teeth. In order for the two gears to mesh together correctly, they must be mounted at the same angle and have their teeth pointing in the same direction.


The most common application for these gears is in differential drives. Differential drives use a pair of bevel gears to transmit motion from one shaft to another while allowing each shaft to rotate at a different speed. This is accomplished by mounting the two gears so that their axes intersect at a point known as the apex. The point where the axes intersect is also known as the pitch point.


The input shaft is connected to one bevel gear, and the output shaft is connected to the other bevel gear. As one gear turns, it meshes with the other gear and causes it to turn as well. However, because of the way they are mounted, each gear can turn at a different speed.


How are bevel gears manufactured?


Bevel gear manufacturing is done using a process called hobbing. This process involves using a special cutting tool, called a hob, to remove material from the gear blank. The hob is shaped like the tooth of the gear and is rotated at high speed as it cuts into the gear blank. This produces a gear with teeth that are accurately spaced and have a smooth finish. 


Role of CNC machines in bevel gear manufacturing


CNC machines play an important role in bevel gear manufacturing. With the help of CNC technology, manufacturers are able to create highly precise and accurate gears. This has led to an increase in the demand for CNC-machined gears, as they offer superior performance and durability.


They are used in a variety of applications, such as automotive transmissions, drivetrains, and differentials. They are also commonly used in power tools, conveyor systems, and pumps. The wide range of applications for bevel gear makes them one of the most popular types of gear on the market.


CNC machining is a critical manufacturing process for bevel, straight as well as spiral gears. In this process, computer-controlled cutting tools are used to remove material from the workpiece to create the desired shape. CNC machining is a highly accurate method of manufacturing, which is why it is so often used for precision components like straight and spiral gears.


There are many benefits to using CNC-machined bevel gear over traditional hand-cut or forged gear. CNC-machined Gears offer superior strength and durability due to their more precise dimensions. They also tend to run quieter and with less vibration than other types of gear.


Benefits of using bevel gears for industrial applications


There are many benefits to using bevel-type gear for industrial applications:

- One benefit is that they can help to increase the efficiency of a system by reducing the number of mechanical parts that are required.
-Additionally, they can help improve the reliability of a system by providing smoother and more efficient power transmission.
-They also provide a higher level of safety for a system by preventing parts from binding or overheating.



Bevel gears are a type of gear used to transmit motion between two shafts that intersect at right angles. They can be either straight-cut or spiral-cut and are available in a wide range of sizes and ratios. When choosing a bevel type of gear for your application, it is important to consider the load capacity, speed, and precision required. With proper care and maintenance, these gears can provide reliable service for many years. True Gear & Spline Ltd. is a leading manufacturer of all types of gear. We use CNC machining for gear manufacturing and gear shaping. Get in touch with us today to learn about everything we can do for you.