Reliability of loading machines operation is determined by reliability and durability of pneumatic engines, in which one of the most responsible and stressed units is the cidinder-piston group. ...

Efficiency of pneumatic perforators, durability and reliability of their work are largely determined by lubrication of the rubbing parts. The studies carried out at the Pnevmatika plant have shown that under conditions of high dynamic loads, sliding speeds of contacting surfaces and increased temperatures in the contacts, lubrication significantly affects the parameters of the perforator, especially the torque, as well as the rate and nature of wear of the main rubbing parts.