If you are designing an application that needs linear motion from scratch, you need to invest a considerable amount of time. It is essential to look at pre-assembled linear actuators to find various options and get an idea of where to start. When selecting the best linear technology manufacturer for your linear actuator, check Lineartechnik to find the best one. The first step is narrowing down your options by choosing the suitable drive mechanism that best suits your application. Here are a few factors to consider when selecting the best linear actuator for your application.
Stroke Length
When choosing between a belt drive or a ball screw, the top consideration is the stroke length that refers to the distance that the actuator needs to move in a single direction. Most ball screw actuators move at stroke lengths of about 1000mm. The screw speed determines the stroke length. Actuators that have toothed belt drive have tension belt limits with long stroke length. If you use belts with larger width and higher pitch then they require longer stroke lengths to fit in the applications.
Travel Speed
When choosing the best actuator, consider the speed. Most belt drive linear actuators have a rate of about 5m/s, and this speed limit is influenced by the installed guide system that affects the recirculating bearings. If you need applications that require high speeds, you can choose a belt drive that can be used with cam rollers instead of recirculating bearings.
Mounting
The direction in which the actuator is mounted will dictate the best drive mechanism. Belt screw drives are suitable for inclined and horizontal mounting orientations. However, if you need vertical mounting, it is essential to be careful on evaluation. Systems that move large loads vertically need a built-in safety mechanism for maximum safety. Most people prefer ball screw drives to belt drives because they are safer for moving vertical loads. In addition, ball screw drives are reluctant to back drive if there is brake failure and will prevent the damage of the system.
Maintenance
Most linear actuators fail due to a lack of lubrication. Belt drive and ball screw actuators need regular lubrication for them to last longer and minimize breaking down. Some manufacturers ensure that they produce systems that are lubricated for life. However, it is essential to check the lubrication once to ensure that the system works properly.
When making your final decision on whether to choose a ball screw or belt drive, you need to consider their performance benefits to select the one that suits your needs. If you choose a belt drive actuator for a vertical application, you need an external brake to ensure safety.
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