Rock drilling machine and axial bearing

Details Rock drilling machine and axial bearing Rock drilling machine and axial bearing

B - Operations, Transporting

25

D

B25D 17/24 (2006.01) B25D 9/14 (2006.01) B25D 17/22 (2006.01) E21B 1/38 (2006.01) F16C 17/04 (2006.01)

Patent

CA 2511586

The invention relates to an axial bearing and to a rock drilling machine pro- vided with an axial bearing. The axial bearing (100) comprises a first piston (20) and a second piston (21). Axial contact surfaces (60, 43a) between the pistons (20, 21) are arranged in the same pressure space (28). The same pressure fluid fed to the axial bearing acts on the contact surfaces and on working pressure surfaces of the pistons.

La présente invention a trait à un palier axial et une perforatrice de roches équipée d'un palier axial. Le palier axial (100) comporte un premier piston (20) et un deuxième piston (21). Les surface de contact axial (60, 43a) entre les pistons (20, 21) sont disposées dans le même espace de pression (28). Le même fluide de pression alimenté au palier axial agit sur les surfaces de contact et sur les surfaces de pression de fonctionnement des pistons.

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