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American Pneumatic Tools
Authorized Distributor

We distribute quality APT Air Tools: Paving Breakers, Rock Drills, Backfill Tampers, Chipping Hammers and other tools for the construction and mining industries.

APT 155 Pneumatic Rock Drill - 1 x 4-1/4

APT 155 Rock Drill

The APT Model 155 Rock Drill is a tough, 60 lb. class rock drill.  This tool can be used in general construction as well as in utility work and plant maintenance.  It is designed for drilling through granite, hard faced rock, quarry drilling, and drilling secondary holes for blasting.  This tool can also be used with dowel hole drilling machines.  Adaptable to wet drilling applications by attaching the APT valve, wet tube and swivel assembly


  • 3 drilling speeds
  • Replaceable piston stem bearing
  • Built-in automatic oiler
  • Available wet or dry
  • Counter clockwise rotation
  • Rubber handle grips


5233 Dry $1,900.00
5234 Wet $1,970.00
Chuck Size  in 1 x 4-14
Bore  in 2-58
Stroke  in 3
Impact Rate  bpm 2100
Air Consumption  cfm 110-120
Weight  lbs 61
Length  in 22-38
Air Inlet in 34 Male NPT


H & D Thread Steel & Bits


Spare Parts List
Maintenance and Repair Information
Model 155 Rock Drill Controls

Accessories & Common Replaceable Parts

18442 Retainer - 78 & 1 x 4-14 $310.00 Rock Drill Oil - 1 Gal RDO1G $29.00
18756 Muffler Kit $294.80 Rock Drill Oil - 5 Gal RDO5G $102.00
18799 Side Rod Kit $90.24 Line Oiler LO-10PF $70.50
18748 Whip Hose Assy (34" Hose) and Constant Feed Oiler QUOTE Whip Check WCSML $12.50
18784 O-Ring and Seal Kit $39.23 Contractors Air Hose - 50' AIRH-19-50R $90.00
9753300015 Dust Control Spray Kit $107.03 Dust Extraction Kit for Paving Breakers & Rock Drills (incl.  TAM3P Pail & Vacuum Hose) PB-RD-VDEX-KIT $1,470.00