Sanding and polishing systems

摘要

An sanding/polishing apparatus which has a motor including a body and a working head which is mounted on the body for sanding/polishing movement relative to the body and to a surface to be treated and includes means for attachment of an abrasive or polishing material to the working head. A feed line is provided in the motor for directing a cold gas flow through the body and working head to the surface to be treated, and a cold gas flow is fed to that feed line through a vortex tube mounted on the body that significantly reduces the temperature of the air delivered to the feed line.