Chain Sprockets

Roller chain sprockets, sometimes called single-chain sprockets, have a series of teeth around a central hole and are used in conjunction with roller chains to move conveyors and other industrial machinery.

What are sprockets?

There are many types of sprockets used in various machinery. Industrial sprockets are dual hub units with teeth made of flame hardened steel or induction hardened stainless steel. They are usually used with timing belts. Drive sprockets are usually smaller in diameter than industrial sprockets.
The term “sprocket” refers to a large wheel with teeth that interlock with the chain. This allows simple, controlled rotational movement of large machines and equipment. Its name is taken from an early use of the term, but it is now considered obsolete. Meanwhile, sprockets have been around for thousands of years.

Advantages of sprockets

High-speed sprockets are advantageous because they transmit more power, are faster, and put less stress on the axle. Compared to belt drives, sprockets are lighter and designed to operate in extreme weather and temperature conditions. Additionally, they are smaller and more compact than belt drives, which can increase productivity and reduce maintenance costs. However, sprockets also require perfect alignment of the shaft and axis. Periodic reversal of the sprocket is possible and does not allow the jaw to stretch. Also, sprockets have greater speed changes than belts and therefore require less maintenance than other sprockets.

chain-sprockets

How do sprockets work?

1

To understand how sprockets work, you need to understand the basic mechanisms that make them work. Simply put, they mesh with a tooth on the chain, and the rollers on the bottom of the sprocket pop out and move out of place. This movement is accompanied by internal friction. When the rollers disengage, the force exerted on the sprocket moves up and down the chain. Further back, the rollers disconnect from the teeth and stay in the valley. 

2

Throughout the process, the chain is in contact with the teeth of the sprocket – the sprocket is part of the chain, which means that every time you ride, the sprocket touches the chain. Typically, sprockets are machined from pressed metal, stamped sheet or bar stock. In general, the harder the teeth, the longer the life of the sprocket. Some manufacturers offer hardened teeth to increase the life of the sprocket, but this feature comes with a premium.

3

Sprockets on bikes are designed to fit a specific chain. Each chain is manufactured to a standard or ANSI, and all sprockets are manufactured to that standard. The chain pitch is the distance between the center of each needle roller and the center of the next. This standard is usually measured in 1/8 inch increments. For example, a chain could be designed with a 1.25mm pitch, and the teeth with a 2.5mm diameter would be a C-type offset sprocket.

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chainsprockets
chainsprockets
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chain-sprockets

Applications for Sprockets

Sprockets have a variety of applications. These parts are vital in power transmission, like universal joints and gearboxes.

Construction Vehicles

Various Drive Chain

Conveyor

Agricultural

Finding Your Ideal Chain and Sprocket

 

 

Do you need a sprocket but not sure what you need? This FAQ is something our professionals hear every week. We excel at working with you to ensure you get the exact roller sprocket or transfer sprocket that will get your project or machine moving again.

Sprockets can be used for everything from forestry to agriculture and everything in between. Choosing the right sprocket is just as important as using the right chain – a mismatch can be catastrophic, causing damage to expensive machinery and even dangerous accidents. In our company, we help you find the right match.

Still struggling with how to describe your sprocket so you can find another? Here are some of the questions we often ask our clients to help point them in the right direction:

What is the Function of a Chain Sprocket?

A sprocket is a component of a bicycle’s drivetrain that transmits power through the chain. It has inner plate, outer plate, bushing and pin chain plate. The rollers are placed between the chain links. They mesh with the teeth of the sprocket and rotate when energized. A roller chain is a simple device that can be operated manually, electrically, pneumatically or using wire ropes.
Despite its simplicity, there are many types of sprockets. Split steel sprockets are split the entire diameter so they are easy to install and remove. They are held together by bolts on the hub, and chain pitch sizes vary from 40 to 240. Apertures range from 3/4″ to 6″. Chains are aligned with chain pins, one facing up and the other parallel to the floor.
Another type of sprocket is the driven sprocket. The driven sprocket is the bottom sprocket in a chain drive. This reduces sprocket maintenance and wear. The driven sprocket can be lubricated to extend its life. During the engagement and disengagement of the chain, the rollers are pressed between the sprocket teeth and the bushings, which are subjected to compressive loads. Sprocket wear is characterized by teeth that are cut inward. A circular saw blade may resemble this worn tooth.

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