Grundomat
For over 40 years, GUNDOMAT pneumatic piercing tools have been providing accurate horizontal bores beneath roads, railways, and landscaping across North America and around the world. Today, after over 200 patents worldwide, TT's pneumatic tools are used in trenches applications all over the world. GRUNDOMAT piercing tools are constructed to the highest standards for limited wear, long tool life and optimum performance. The accuracy edge, ordinary tapered cone heads just can’t cut it. Only Grundomat tools have the patented reciprocating stepped-cone chisel head that effectively powers through obstructions for consistently on-target bores.
- Chisel-tip establishes accurate trajectory.
- Cutter cone steps & long tool length maintains course.
- Reciprocating head action keeps tool on course.
- Finest quality alloy steels ensure durability
- All components precision machined for exceptional performance
- Teflon Seals on moving parts prevent metal-to-metal contact to increase tool life and efficiency

Technical Information
Model | Tool Diameter (In.) / (mm) | Basic Package Part # | Delux Package Part # | Length (In.) | Weight (Lbs.) | Air Cons. (cfm) | Strokes/Minute |
---|---|---|---|---|---|---|---|
45 P | 1 3/4 / 45 | 07076917 | 07060417 | 39 | 20 | 12 | 580 |
55 P | 2 / 55 | 07076920 | 07060420 | 42 | 32 | 18 | 480 |
65 P | 2 1/2 / 65 | 07076926 | 07060426 | 52 | 55 | 25 | 460 |
65 PK | 2 1/2 / 65 | 07076924 | 07060424 | 41 | 40 | 23 | 640 |
75 P | 3 / 75 | 07076930 | 07060430 | 57 | 75 | 32 | 400 |
75 PK | 3 / 75 | 07076929 | 07060429 | 49 | 62 | 28 | 460 |
85 P | 3 1/3 / 85 | 07076934 | 07060434 | 61 | 101 | 32 | 390 |
85 PK | 3 1/3 / 85 | 07076933 | 07060433 | 53 | 88 | 25 | 480 |
95 P | 3 3/4 / 95 | 07076937 | 07060437 | 68 | 143 | 53 | 320 |
95 PK | 3 3/4 / 95 | 07076939 | 07060439 | 60 | 123 | 46 | 360 |
100 P | 4 / 100 | 07076940 | 07060440 | 67 | 154 | 42 | 330 |
100 PK | 4 / 100 | 07076941 | 07060441 | 53 | 124 | 43 | 400 |
110 P | 4 1/4 / 110 | 07076943 | 07060443 | 66 | 212 | 64 | 325 |
130 P | 5 / 130 | 07076951 | 07060451 | 69 | 258 | 92 | 340 |
130 Servo | 5 / 130 | 07076950P | 07060450P | 69 | 258 | 92 | 350 |
145 P | 5 3/4 / 145 | 07076957 | 07060457 | 78 | 370 | 120 | 310 |
160 P | 6 1/4 / 160 | 07076960 | 07060460 | 79 | 437 | 159 | 320 |
180 P | 7 / 180 | 07076970 | 07060470 | 87 | 573 | 159 | 280 |
5-Year Manufacturer Warranty
Our 5 year warranty, along with the attention of our factory-trained technicians, will help you get the most out of your equipment.
Unit Weight and Dimensions
No current weight or dimensions for this product.
Operating Features
The Grundomat is a pneumatic piercing tool designed for accurate horizontal boring beneath roads, railways, and landscaping. Used for over 40 years, it has been a reliable solution for trenchless applications in water, gas, sewer, and electrical industries.
Key Features:
- Precision Boring: Capable of horizontal bores from 50 to 150 feet, maintaining accuracy even in challenging soil conditions.
- Reciprocating Stepped-Cone Head: Unlike conventional fixed-head tools, the Grundomat hammers through obstacles, ensuring a straight bore path.
- Minimal Disruption: Reduces surface damage and costly restoration compared to traditional trenching methods.
- Easy Operation: Simple setup and minimal crew requirements make it a cost-effective alternative to larger directional drilling equipment.
- Durability: Constructed with high-quality alloy steels for long tool life and optimal performance.
The Grundomat is available in various sizes and configurations, making it a versatile choice for trenchless installations. Interested in learning more? Call us!
Contact us today to learn more about our trenchless supplies.
1400 Commerce Parkway, Lancaster, NY 14086
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