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    • GRUNDOPIT – KS50

    MINIMALLY INVASIVE

    With the GRUNDOPIT KS50, gas, water, electricity and FTTH service connections are installed from the main line in the road in the smallest possible, round work pit (keyhole of just Ø 65 cm) or a narrow pit of just 65 cm in width directly into the building or into a small assembly pit in front of the building.

    • Drilling from the smallest round work pit,Ø 65 cm keyhole
    • Directional drilling with continuous detection
    • Simple operation via control panel with colour display
    • No work pits on private properties, bores directlyinto the basement possible
    • Minimum excavation work –less is simply impossible
    • Only very small work area required, minor traffic impairment
    • Eco-friendly and gentle installation method
    • Minimal drilling fluid requirements
    • No elaborate asphalting necessary for restoring the keyhole
    • All connection jobs are carried out from the surface
    • Drilling lengths up to 50 m
    • Pipe diameter up to 90 mm

    QUICKSTARTER

    COMPACT, POWERFUL, PROFITABLE

    CONTROL PANEL

    • Fully automatic drilling
    • Operation from the surface
    • Ergonomic mode of operation accordingto the latest standards
    • Directional detectable bore
    • High safety for the operator
    • Clearly arranged colour display with icons
    • Infinitely variable adjustmentof the optimal drilling parameters

    ROTARY DRIVE

    • Rotary drive with hollow shaft –maximum rod length for the smallest installation space
    • Positive-fitting rod link – soiling-resistant, material-friendly
    • Torque-dependent thrust regulation –optimal utilisation of the machine output

    01.Integrated machine controls– fully automatic drilling 
    02.Fluid-assisted soil displacement method – No ‘flushing out of the bore cuttings’ 
    03. Small space between bore axis and bottom edge of machine – direct connection of service pipe to the main line 
    04. Integrated rod cleaning by means – of high-pressure washing jet 
    05. Minimally invasive drilling – from out of the smallest possible working pit, Ø 650 mm ‘Keyhole’ 
    06. Closed round frame design – stably, flexibly directional (machine can rotate freely inside the keyhole) 
    07. Integrated hydraulic tensioning system – short set-up times, safe installation

    TECHNICAL SPECIFICATIONS
    • Drilling out of the smallest possible working pits,Ø 650 mm keyhole
    • Integrated machine controlwith fully automatic drilling operation(except steering movements)
    • Infinitely variable adjustment of the drilling parameters
    • Fully automatic rod handling
    • Enclosed round frame design
    • Clearly arranged colour display with icons
    • Rotary drive with hollow shaft
    • Torque-dependent thrust regulation
    • Integrated rod cleaning system
    • Integrated hydraulic tensioning system
    DEMONSTATION OF THE KEYHOLE METHOD FOR GASNETZ HAMBURG

    The gas network of the free and Hanseatic city of Hamburg consists of approx. 7,900 km of pipelines and around 160,000 service connections for almost 230,000 network customers. Within the framework of a week-long demonstration the urban operator Gasnetz Hamburg GmbH convinced itself of the benefits of the minimally invasive procedure for the quick and gentle production of gas service connections from a small circular pit with a maximum diameter of 65 cm.

    TECHNICAL SPECIFICATIONS
    PERFORMANCE DATA GRUNDOPIT KS50 metrical GRUNDOPIT KS50 imperial
     Height, diameter:  short version: H = 2.350 mm Ø = 595 mm, long version: H = 2.850 mm Ø = 595 mm  short version: H = 92.5 in Ø = 23.4 in, long version: H = 112.2 in Ø = 23.4 in
     Weight:  short version: approx. 550 kg, long version: approx. 620 kg  short version: approx. 1,212.53 lbs, long version: approx. 1,366.85 lbs
     Content of rod box:  100 m  328.08 ft
     Thrust and pullback force:  50 kN  11,240.45 lbf
     Max. torque:  1.200 Nm  885.07 lbf ft
     Max. spindle speed:  70 rpm  70 rpm
     Pilot bore Ø:  58 mm  2.3 in
     Drill rods Ø:  50 mm  2.0 in
    Effective rod length:  250 mm  9.8 in
     Drill rod weight:  2,4 kg  5.29 lbs
     Upsizing Ø:  130 mm  5.1 in
     Outer pipe Ø:  90 mm  3.5 in
     Bore length:  50 m  164.04 ft
     Min. bore radius:  50 m  164.04 ft

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