GRUNDOBURST 400 S
THE RENOVATOR
GRUNDOBURST 400S
THE BEST THING FOR PIPE RENEWAL
QUICKLOCK BURST RODS
- Quick locking couplings without thread (QuickLock), no lubrication required, therefore no time consuming screwing together required
- Quick rod insertion and removal
- The rods are connected faster than threaded rods
- Absolutely push and pull resistant
- Able to negotiate bends
- Integral production, therefore highly resistant to stress
- Robust, low-wear as clamping is not required
- No slipping back of the rods, due to direct force transmission
- Rod system with convenient rod accessories
- Longer service life than screwed rods
- QuickLock bursting rods are available from 35 mm diameter for pipes from ND 50
- Other rod diameters: 54 mm, 75 mm, 100 mm, 120 mm and 140 mm


PULLING FORCE MEASUREMENT GRUNDOLOG
- Monitoring and logging of pulling force imparted on new pipe during installation
- Performance categories: 150kN, 400kN, 1,250kN, 2,500kN
- Self-sufficient storage and live transfer of data possible
- Compact dimensions for small pits
- Can be applied from a pit in both directions
- Fast operating cycles and high output
- Rapid rod pushing through old pipe and during new pipe installation
- Quick to get started
- All machine models have remote control
- Low weight for easy transport
- Accessories specific to the procedure
- Stable and job-site specific constructionto withstand the highest of loads and strain
- Long service life and lowmaintenance effort
- Ergonomic operation and high level of work safety
- CE-certified
TECHNICAL SPECIFICATIONS

- For pressure and sewer lines ND 1.97 – 9.84 inches up to app. 328 ft length (procedural) for installation in manholes ≥ ND 1000 and in small pits
- Pulling rig length only 23.62 inches
- Effective rod length in the manhole: 18.05 inches
- Relatively simple operation in the manhole
- No excavation when working from manhole to manhole
- All-round working safety
TECHNICAL SPECIFICATIONS
PERFORMANCE DATA |
GRUNDOBURST 400S TT B110 OR TT B20 metrical |
GRUNDOBURST 400S TT B110 OR TT B20 imperial
|
---|---|---|
Dimensions of rig LxWxH: | 600 x 490 x 340 mm | 23.62 x 19.29 x 13.39 in |
Weight of rig: | 200 kg | 440.92 lbs |
Thrust: | 275 kN | 61,822.48 lbf |
Pulling force at 250 bar: | 400 kN | 89,923.60 lbf |
Pit size LxW: | 2.500 x 1.100 mm, manhole min. Ø 1.000 mm | 98.43 x 43.31 in, manhole min. Ø 39.37 in |
Axle height: | Pit: 220 manhole: 140 mm | Pit: 8.66 manhole: 5.51 in |
Drive output at 2,000 rpm • 2,300 rpm • 3,000 rpm: | – • 55,1 • 24,4 kW | – • 73.89 • 32.72 hp |
Hydr. operating pressure: | 250 bar | 3,625.95 psi |
Old pipe Ø: | ND 50 – ND 250 mm | ND 1.97 – ND 9.84 in |
For pipe materials: | PVC, PE, stoneware, ductile/grey cast iron, AC, GFRP, steel | PVC, PE, stoneware, ductile/grey cast iron, AC, GFRP, steel |
New pipe Ø: | up to OD 280 mm | up to OD 11.02 in |
For pipe materials: | PE, PP, stoneware, grey cast iron, GFRP, steel | PE, PP, stoneware, grey cast iron, GFRP, steel |
Bursting rod Ø: | 54 mm | 2.13 in |
Bursting rod Ø alternative: | 35 (max. 200 kN) mm | 1.38 (max. 44,961.80 kN) in |
Bursting rod weight: | 5 kg | 11.02 lbs |
Effective bursting rod length: | 470 mm | 18.50 in |