The HOLGER CLASEN's GG28/370 series pneumatic straight grinders feature 6 mm collet chuck, 280 W, speeds of 37,500 min-1, and are recommendable for composite treatment. The precision bearings successfully absorb radial and axial forces, while chucks offer safe accessories insertion. Highly durable, they can be used as grinding spindle. They operate smoothly, due to motor and power take-off separation.