Description APT M118 Clay Digger The APT Model 118 Clay digger is used for digging clay, shale, hard pan and frozen ground. The Model 118 is an ideal tool for clearing out dirt under existing foundations and for tunneling under existing foundations and for tunneling under existing structures. This medium weight tool can be used for horizontal work and for vertical work. The only difference between the M117, M118, and M119 tools are the handles. These tools have the same cylinders and the majority of the internal parts in common, which makes them very versatile tools for the use in various types of work. The M118 features APT’s patented Ball Valve design. (Pat. # 8,276,682 B2) Download Manual Model – Part # Units M118 – 5201 M118 – 5202 Chuck Size in 7/8 x 3 – 1/4 1 x 4 – 1/4 Bore Diameter in 1 – 3/4 Stroke in 3 – 3/8 Blows per Minute bpm 1,850 CFM @ 90 psi CFM 34 – 36 Weight lbs 31 Length in 22 – 1/2 Air Inlet NPT in 3/8 MALE NPT STANDARD FEATURES Automatic Ball Valve Drop forged, Steel D-style handle Built-in automatic oiler Replaceable chuck bushing Latch type retainer Deep, case hardened forged allot steel cylinder Inside trigger for better control and safety 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.
