Belt Driven Actuators: Loads and Speeds

Actuators are systems used to control or drive a load. There are pneumatic, hydraulic and electric actuators, all utilizing mechanical parts to move a load. A category of electric actuators are belt actuators and belt drive systems. Belt drive systems ...

Re-examining Precision and Repeatability Criteria in Actuator Selection

One of the main design challenges faced during the early design stages of automated mechanical systems deals with the precision and repeatability needs of components and sub-components.  Sometimes, these two design considerations tend to dwarf all others in becoming the ...

Part I: Comparing Rolled Ball Screws and Ground Ball Screws

At a high level, ground and rolled ball screws appear to function nearly identically within a wide range of mechanical applications.  However, the raceway surfaces, which are very similar to traditional machine screw threads found in a typical screw/nut system, ...