| 摘要 |
<p>The tool has a guide for an impact body, and impact absorbers (20, 50) limiting motion of the impact body along an operating axle. Each impact absorber comprises a flexible damping ring (28). The damping ring comprises grooves, which run radially, at a front side (29) of the ring, and/or grooves, which run at circumference along the operating axle. The guide comprises a sleeve moved along the operating axle, where the sleeve is pre-stressed along the operating axle by the damping ring. Sealing rings are provided at radial inner and outer surfaces of the sleeve.</p> |
