HR 420-800 THH

Main Features

Model Name : HR 420-800 THH

Category : Pile Driving

Max hammer weight (tons) : 22.5

Max pile length (m) : 24

Max pile weight (tons) : 9

Weight (tons) : 135

The   HR 420-800  is our largest model, which has been specially designed and built for carrying out works requiring large bore diameters at great depths. 
This one of a kind drilling rig can be equipped with different rotaries with different torque values ​​depending on your job requirements. The rotary can also be set up with the MCS (MAIT Casing System) or torque multiplier which can exert a maximum nominal torque of 800 KNm for insertion and extraction on the casing tubes up to a maximum diameter of 3000 mm. 
The HR 420-800 is not limited to the conventional kelly bar drilling system, but it is able to utilize Casing Oscillators, Continuous Flight Auger (CFA), Diaphragm Walls by kelly bar system, and Driven piles with hydraulic hammers. The HR 420-800 is also available with a crowd winch system (THD), which allows a longer stroke along the length of the mast, therefore longer casing sections may be used when drilling.

winches
1st winch nominal publlback300 KN67,443 lbs
2nd winch nominal pulldown120 – 200 KN27,000 – 45,000 lbs
engine
brandCATERPILLAR
modelC15
 power403 KW @ 2.100 rpm540 HP @ 2,100 rpm
hydraulic system
hydraulic oil tank1,000 litres264 gal
fuel tank600 lit159 gal
crawler
length6.400 mm21 ft
width3.500 – 5.100 mm11.5 – 17 ft
shoes1,000 mm3.3 ft
weight
approx. weight135 tons297,700 lbs
Works with Hydraulic Hammer
Hydraulic hammer typeswith ram up to 14 tons
Max hammer weight22,500 kg49,590 lbs
Max pile length24 m78.7 ft
Max pile weight9,000 kg19,836 lbs