A piston construction for an axial bearing of a drilling...

Details A piston construction for an axial bearing of a drilling... A piston construction for an axial bearing of a drilling...

B - Operations, Transporting

25

D

B25D 9/26 (2006.01) B25D 9/14 (2006.01) B25D 17/24 (2006.01)

Patent

CA 2234390

The invention relates to a piston construction for a drilling machine provided with an axial bearing. The piston construction comprises a separate piston portion (5) and a bearing portion (7) to be mounted coaxially with said piston portion, whereby the piston portion (5) is to be mounted in a cylinder space (4) provided inthe frame of the drilling machine, and the bearing portion (7) is to be mounted between the piston portion (5) and the shank (3).

L'invention se rapporte à la structure d'un piston d'une machine de forage pourvue d'un palier axial. La structure du piston comprend une partie séparée (5) et une partie palier (7) devant être montée coaxialement avec ladite partie (5) du piston, cette dernière (5) devant être montée dans un espace cylindrique (4) ménagé dans le cadre de la machine de forage, et la partie palier (7) devant être montée entre la partie (5) du piston et la tige (3).

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