Tough and dependable, the high-performance Model M190 Paving Breaker is the most powerful tool American Pneumatic Tools makes. It is designed for big jobs such as heavy demolition and concrete breaking. Since the Model 190 has the ability to penetrate the hardest concrete it is the tool of choice for road building and foundation removal. 


Model - Part # Units M190 - 5239 M190 - 5240
Chuck Size in  1 - 1/8 x 6  1 - 1/4 x 6 
Bore Diameter in  2 - 5/8 
Stroke  in  6 - 1/8
Blows per Minute bpm 1,350 
CFM @ 90 psi CFM  75 - 80 
Weight lbs  91
Length in  29 
Air Inlet NPT in  3/4 MALE NPT


  • Steel automatic valve
  • Drop-forged, steel handle 
  • Built-in automatic oiler
  • Rubber handle grips 
  • Latch-type retainer 
  • Swivel hose connection
  • Noise-dampening mufflers available 
  • Four-bolt backhead 
  • Universal hose connector supplied

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.