Spur Gear

Spur gears are used in mechanical devices to transmit motion and power from one shaft to another. This transfer can change the operating speed of the machine, increase torque, and allow fine-tuned control of the positioning system.

Spur gears are a type of cylindrical gear, with shafts that are parallel and coplanar, and teeth that are straight and oriented parallel to the shafts. 

Standard Spur Gears

We offer a wide variety of standard external spur gears for you to choose from. Our standard gear style and quality level options are ideal for a wide range of products and will meet the parameters and constraints of your project.

The History of Spur Gears

Spur gears are one of the oldest devices. They have been around since the time of the Greeks and Romans. By the 17th century, complex designs for calculating involute gear ratios were created. During the first industrial revolution, rotary cutters and forming tools were invented, paving the way for the manufacture of spur gears.

Custom Spur Gears

If you cannot find the size you need in our inventory, we can supply custom spur gears. We have the capability to produce gears with non-standard pressure angles, pitches, materials and finishes. We can also customize modified bores, scallops, end bores and cross bores for your spur gears.

What Is a Spur Gear?

Spur gears are one of the most popular types of precision cylindrical gears. These gears are of a simple straight tooth design with parallel teeth positioned around the circumference of the cylinder, with a central hole for mounting on the shaft. In many variants, the gear is machined with a hub that thickens the gear body around the hole without changing the gear face. The center hole can also be broached to allow the spur gear to fit onto a splined or keyed shaft.
Spur gears are used in mechanical applications to increase or decrease the speed of equipment or increase torque by transferring motion and power from one shaft to another through a series of paired gears.

What Are Spur Gears Used for

The many advantages of spur gears ensure that these gears can be used in a variety of high-speed and high-load applications, all types of gear trains, and various speed ratios. They are best for increasing the torque or power of an object or increasing/decreasing the speed of an object. Therefore, spur gears are used in a variety of mechanical applications, such as clocks, electric screwdrivers, etc., as well as many household appliances, such as washing machines, mixers, swing sprinklers, and clothes dryers, etc.

Most spur and helical gears are manufactured with the help of cutting. However, there are many other methods such as casting, rolling and forging. In the case of plastic spur gears, in addition to tooth profile cutting such as metal gears, injection molding is also used depending on the production quantity.


Where is a Spur Gear Used

If you need spur gears, you can choose from several types commonly used in various industries. Spur gears are cylindrical steel discs with teeth on the circumference. These teeth provide the power required for the mechanical process. Commonly used in construction machinery, mixers, fuel pumps, etc.

Spur gears are most commonly used in applications requiring high speed handling and increased torque. Their simple design allows them to be manufactured with tight tolerances. They are also relatively easy to install in confined spaces. However, they can be noisy. Therefore, it is important to choose the right gear for your application.

One type of spur gear is the internal gear, which is a combination of two or more parallel shafts that rotate in the same direction. In this type, the gear is inside the wheel and the pinion is in the center. This assembly takes up less space than an external gear.

Advantage of Spur Gear

Spur gears, also known as spur gears, have many advantages over other types of gears. Spur gears are easier to design and manufacture and are more efficient than helical gears. Spur gears offer higher efficiency because helical gears generate more heat because they have sliding contact between the teeth, which creates axial thrust. When an application requires simple, easy-to-assemble gears, spur gears may be the ideal gear for you. Spur gears are also known for their reliability and constant speed ratios. If you’re looking for quiet running gears, check out our helical gears.

Spur gears can be made from metals such as steel or brass, or from plastics such as nylon or polycarbonate. 

Types Of Spur Gears

1. External gears are gears with teeth cut on the outside of a cylinder. The two external gears mesh and rotate in opposite directions.
2. Internal gears are gears with teeth cut inside a cylinder. The external gear is located in the internal gear, and the gears rotate in the same direction. Because the shafts are closer together, the internal gear assembly is more compact than the external gear assembly. Internal gears are mainly used for planetary gears.

Custom Spur Gears

We manufacture custom spur and internal spur gears in a variety of styles and sizes. We specialize in spur gears and gear drives designed to meet tight specifications and tolerances. We offer standard and metric sizes and can manufacture spur gears in a variety of materials. Special designs available. Following AGMA specifications, we often exceed these standards to accommodate the complexity of high precision gears. No specs, no details are too complicated for Avon.
Spur gears are a very common type of gear, and in many cases they are the most cost-effective type of gear. They usually have straight teeth and transmit motion and power between parallel shafts. Spur gears are used in many equipment and industries including: electronics, construction equipment, machine tools, conveyors and material handling. They are generally not used in automotive applications as they can be noisy.

Spur Gears for Sale

As a spur gear manufacturer, we will do our best to serve you. If you need customized products, or the products you need are not found on our website or need the spur gears catalog, don’t worry; more of our products are still being uploaded. You can email us directly, and we will reply to you within 24 hours!

Application of Spur Gear

Spur gears are used for mechanical devices to transmit motion and power from one shaft to another. This transfer can change the operating speed of the machine, increase torque, and allow fine-tuned control of the positioning system. Spur gear design makes them suitable for low speed operation or operating environments with higher noise margins.


Conveyor systems

Speed reducers

Engines and mechanical transportation

Gear pumps and motors

Machining tools

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