A DRIVE DEVICE FOR ROTATABLE OPERATION OF A DRILL BIT OF A DOWN-THE-HOLE HAMMER
The invention relates to a rotary device (101 ) for a down-the-hole hammer (1 ), which rotary device is accommodated in a rotation motor housing (3) and mounted behind a drill housing (2) for transferring a torque to a drill bit (8) and a pressurized drive fluid (22) to a striking mechanism (4) for...
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| Sprache: | eng |
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