How to Choose the Right Chain Drive for Your Application

Author : Rosie

Update time : 2023-03-07 17:54:43

Selecting the right chain drive for an application can become somewhat difficult due to the variety of forms and functions of various chain designs. The proper way to make this selection is to eliminate unsuitable options by evaluating the chain's application and function. This will help narrow down the feasible options before the final selection is made. The most important factors in chain drive selection are as follows.

- Load

- Chain speed

- Shaft layout

- Distance between shafts

- Service environment

- Lubrication

Load

The most important question to focus on when selecting the right chain drive for your application is how much power needs to be transmitted? The chain must be able to handle the power generated by the prime mover.

The safety of the crew and the chain drive system depends on the correctness of the calculations at this stage. It is recommended to work with an adequate safety factor.

Chain speed

Not all chain drives can handle high speed applications. Some chain drives are designed for low speeds. Specifications can be obtained by calculating and ensuring that the speed is within the recommended range. This evaluation will greatly reduce the number of designs available for this application.

Shaft Layout

Most chain drives do not work with non-parallel shafts. If the shafts are not perfectly aligned, the designer may have to use a gear drive as an alternative.

Distance between shafts

It is recommended that the center distance between shafts be in the range of 30-50 times the chain pitch. The designer must also ensure that a contact arc of 120 degrees is obtained on smaller sprockets. If the number of sprocket teeth is small, there must be at least five teeth in contact with the chain at any given moment.

Service Environment

The service environment will determine the expected resistance of the chain drive to moisture, dirt, abrasives, corrosion and high temperatures. It will also affect other parameters such as vibration, noise level and fatigue strength. For example, in areas where noise needs to be considered, designers may choose to use inverted tooth chains.

Lubrication

Most chain drives require lubrication to achieve a satisfactory wear life. The chain type, size, load and operating speed will determine the need and extent of lubrication. Depending on the application, the designer may prefer manual, drip, oil bath or forced supply lubrication.

Some chains are self-lubricating and do not require any external lubrication during their entire service life. These chains use bushings made of oil-impregnated sintered plastic or metal to provide uninterrupted lubrication during operation.

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