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hydraulic drill

A hand-held or machine-mounted rotary drill for boring shot-firing holes in coal or rock and operated by hydraulic fluid. The drill outfit includes a skid-mounted powerpack comprising a 5-hp (3.73-kW) flameproof electric motor, pump, and tank. The coal drill weighs about 32 lb (14.5 kg).

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
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