Active path of the beater extension in a percussive mechanisms of the hydraulic WOU-42SM rotary-and-percussive drill
KALUKIEWICZ A, NIEŚPIAŁOWSKI K., WARACHIM W.

S u m m a r y
Conditions of the hydraulic impact occurrence in a percussive mechanism of the hydraulic WOU-42SM rotary-and-percussive drill were presented. The amount of hydraulic impact in relation to the beater stroke was determined on the basis of the performed studies and its relationship with a total beater impact force was determined as well.