HR 420-800

Main Features

Model Name : HR 420-800

Category : Poles

Max Torque (KNm) : 800

Max Diameter (mm) : 3000

Max Depth (m) : 110 

Weight (tons) : 120 – 135

The  HR 420-800   is our largest model, it has been designed and built specifically for the realization of jobs that require drilling large diameters and great depths. 
This drilling rig can be equipped with different rotary with different torque values ​​based on the work needs. The rotary, in addition, can be set up with the MCS  (MAIT Casing System) or torque multiplier, which exerts a maximum nominal torque of 800 KNm in the insertion and extraction of form pipes up to a maximum diameter of 3,000 mm. The HR 420-800 is not limited to the conventional drilling system with rod, but can work with a column rotating vice, continuous flight auger (CFA), diaphragm walls with the rod and piles driven with hydraulic hammers. The HR 420-800 is also available with a push-pull winch (THD), which allows for a greater stroke of the rotary hoist along the tower, thanks to which longer pipe sections can be used.

Rotary
Nominal pairs available280 – 360 – 420 KNm206,500 – 265,500 – 309,800 lbsft
Rated torque with MCS (with liners)800 KNm590,050 lbsft
Nominal Pull-Push400 KN90,000 lbs
Unloading Speed130 rpm
Race14,500-19,500 mm (THD version) / 7,000 mm (CP version)48 – 64 ft (THD version) / 23 ft (CP version)
Winches
Rated Pull Main Winch250 – 300 – 400* KN56,200 – 67,500 – 90,000* lbs
Rated Pull Auxiliary Winch120 – 180 KN27,000 – 40,500 lbs
Motor
BrandCATERPILLAR
ModelC15
Power403 KW @ 2.100 rpm540 HP @ 2,100 rpm
Plumbing System
Hydraulic Oil Tank1,000 liters264 gal
Fuel Tank600 liters159 gal
Expandable Tracked Undercarriage
Length6.400 mm21 ft
Length3.500 – 5.100 mm11.5 – 17 ft
Soles1,000 mm3.3 ft
Weight
Approximate Weight120 – 135 tons264,500 – 297,700 lbs
Working with Propellers and Buckets
Max Diameter3.000 mm10 ft
Max intubated diameter3,000 mm (CP version) / 2,600 mm (THD version)10 ft (CP version) / 8.5 ft (THD version)
Depth40 – 50 – 60 – 70 – 90 – 110 m131 – 164 – 197 – 230 – 295 – 360 ft
Work with Morsa Giracolonne
Max Diameter2,500 mm8 ft