Grundomat 45P (1 3/4 in.) (New)

The GRUNDOMAT 45 P is a compact 1 3/4 in. pneumatic piercing tool built for trenchless installation of small pipes, cables, conduit, and utility lines. Powered by compressed air, this cylindrical air-hammer drives through the ground to create a clean underground bore without open-cut trenching.

What contractors use it for: boring under a driveway, sidewalk, or landscaped yard to install irrigation and sprinkler lines, low-voltage and electrical conduit, cable and fiber optic drops, and small water lines — no trench, no cut concrete, no landscaping repair. At just 20 lbs and 12 CFM, it runs off a small compressor and launches by hand.

Also known as: underground mole, boring missile, air mole, ground piercing tool, horizontal boring tool, trenchless bore tool, pneumatic gopher. Whatever your crew calls it — this is the smallest tool in the Grundomat line.

As a pneumatic mole, the GRUNDOMAT 45 P performs well in displaceable soils such as sand, loam, and gravel, including soil conditions with fracturable rocks. It is not designed for solid rock or unfracturable rocks, and very soft soils may affect accuracy because the tool’s own weight can cause deviation.

Grundomat 45P Specifications

Package Options

• Tool only (P/N GP0450032) — the boring tool itself, for crews that already have an air hose and lubricator.
• Basic package (P/N 07076917) — tool, 50 ft. air supply hose, in-line lubricator assembly, 1 gallon Grundo-Oil tool lubricant, magnetic starting level, operator’s & parts manual.
• Deluxe package (P/N 07060417) — everything in the Basic package plus a maintenance tool box matched to the 45P: spanner wrench pair, replacement spanner pins, liquid Teflon, seal compression clamp, roll pin punch, 277 threadlocker (10 ml), primer (2 oz), and roll pin kit.

Part Number Cross-Reference

GP0450032 — GRUNDOMAT 45P, tool only · 07076917 — GRUNDOMAT 45P, basic package · 07060417 — GRUNDOMAT 45P, deluxe package. Need a larger bore? See GRUNDOMAT 55P: GP0550031 / 07076920 / 07060420.

Ships from our US warehouse — backed by warranty.

The GRUNDOMAT 45 P is a practical choice for landscapers, electricians, and utility contractors who need reliable underground piercing performance with minimal equipment and setup.