The APT Model 115 Rock Drill works as a drilling tool for drilling holes for anchor bolts and small dowel hole drilling. This versatile tool has a stop rotation feature that converts it from a drilling tool to a percussion tool. It is an ideal tool for light chipping in horizontal and overhead work.

View and/or Download M115:  Spec Sheet Manual


Model - Part # M115 - 5197
Chuck Size 7/8" Hex x 3 - 1/4"
Bore Diameter (in) 1 - 15/16"
Stroke (in)  1 - 3/8"
Blows per Minute (bpm)  2900
CFM @ 90 psi 32 - 36
Weight (lbs) 19
Length (in) 19"
Air Inlet NPT (in) 3/8" MALE NPT 


  • Stop-rotation feature
  • Built-in automatic oiler
  • Lach type retainer
  • Lightweight aluminum cast handle

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.