Weighing only 9lbs, the APT Model 109 Rock drill & Utility Drill is the lightest tool American Pneumatic makes. It is the ideal tool for drilling holes for anchor bolts, as well as for small dowel hole drilling. The stop rotation feature easily converts the tool from a drilling machine to a percussion only tool.

View and/or Download M109:  Spec Sheet Manual


Model - Part # M109 - 17643
Chuck Size 3/4" Round x 3 - 3/4"
Bore Diameter (in) 1 - 1/4"
Stroke (in)  1"
Blows per Minute (bpm)  3400
CFM @ 90 psi 19 - 21
Weight (lbs) 9
Length (in) 15"
Air Inlet NPT (in) 3/8" NPT FEMALE 


  • Right-hand rotation
  • Lightweight, aluminum cast, D-style handle
  • Inside trigger for better control and safety
  • Deep case hardened alloy steel cylinder
  • Rubber dust excluder helps protect internal parts form dust and debris
  • Ball type retainer allows for quick change-out of drill bits

Air Pressure

The recommended air requirement for the operation of APT tools is 90 psi (6.2 bar). Lower air pressure will decrease power, too high a pressure will increase unwanted stresses in the tool. For proper CFM ratings, please refer to the specification charts shown for each tool in this catalog.

Hose Size

APT recommends the use of at least 1⁄2” inside diameter or larger hoses to assure sufficient air flow to the tool. For portable compressor hose and longer lengths, 3⁄4 “ hose is recommended. Keep the overall length of the hose to a minimum to prevent pressure loss at the tool.

Connecting Hoses

Hoses should be rated for a minimum of 250 psi (17.2 bar). Before connecting the air hose to the tool, check the tool inlet connector to be sure it is clean and free of dirt or debris. Keeping dirt and debris from entering the tool will assure long and satisfactory operation.