Comparison of Electric and Pneumatic Power Tools - Part II: Ergonomics and Operator Preference

In addition to quantifying physical characteristics, performance and cost of power tools, it is important to obtain subjective input from operators. A small user survey of 11 operators was conducted at Ford Wixom Assembly Plant to obtain operator comments on tool balance, speed, weight, torque reaction, etc. Operators used comparative electric tools in place of their regular air tools for the line trial. Surveyed assembly team members expressed concern over electric tools' slow speed, cable rigidity and absence of a swivel power connection. Tool temperature and lack of repair experience were also concerns, despite the improvements they noted in noise and air quality, vibration and comfort.