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.
| 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 | |
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.
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.
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.