Grundomat Piercing Tools

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
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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
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