MRD-50 Rock Drill | Sullair

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Rock Drill

Product Spec 

Single-throttle lever controls all tool functions: automatic-off, blow only, and progressive drill speeds.

We eliminated many high wear parts. To you this means less loss of power due to wear, less downtime to replace worn parts, and lower overall maintenance costs.

With only two parts moving during operation, a non-corrosive automatic valve, less radial piston movement and high-tech alloys, our drills do not require special rock drill oil. Under normal operating conditions, oil carry-over from the compressor combined with moisture in the air will provide sufficient lubrication.


  • Weight 48 1/2 lbs.
  • Length 23 1/4"
  • Bore & Stroke 3" x 2 5/8"
  • Impact Rate 1800 blows/min.
  • Air Consumption 99 cfm (2.8 m3/min, 47 l/s)
  • Air Inlet Diameter 3/4" NPT
  • Shipping Weight 55 lbs.
  • Chuck Size 7/8" HX x 3 1/4", 7/8" HX x 4 1/4", 1" HX x 4 1/4"


  • Dead Man Safety Handle
  • One Control for Drilling and Blowing
  • Variable Throttle Control
  • Continuous Hole Cleaning
  • Direct Rotation of the Piston
  • Less Maintenance
  • Minimal Lubrication Required
  • Oil Reservoir
1 Year Limited Warranty A Sullair Air Tool, if used in accordance with manufacturer's instructions is warranted against defects in materials and workmanship. M Series tool are also warranted against loss of performance due to wear. This warranty does n