Doofor Rock Drills - Products - DF400 -series rock drills

Doofor Products - DF400 series hydraulic rock drills

The superfast Doofor DF400 –series high frequency rock drills are made for general excavations, quarrying and bolting with a hexagonal shank rods with a shank size of 108mm (4 ½”) * 19mm (3/4”), 22mm (7/8”) or 25mm (1")

The DF400 –series rock drills are through flushing drills and flushing media can be air or water. Doofor DF400 -series rock drills can be also equipped with male or female shank adapters.

A hydraulic steel retainer lock cylinder is available from the manufacturer.

DF410 is a hydraulic rock drill to drill diameter 32mm (maximum 35mm) holes.
DF420 is a hydraulic rock drill to drill diameter 36mm (maximum 41mm) holes.

		DF410		DF420
	metric	US cust.	metric	US cust
percussion power class	5kW	6.71hp	7kW	9.4hp
percussion oil flow	30-40bar	8-11GPM	40-60bar	11-16gpm
percussion pressure	130bar	1885psi	130bar	1885psi
rotation motor*	12.5cm3	7.63in3	20.0cm3	12.20in3
rotation speed RPM	150-300	150-300	200-300	200-300
rotation torque*	65Nm	48lb-ft	100Nm	74lb-ft
rotation oil flow	6-12l/min	1.6-3.2gpm	10-15l/min	2.6-4.0gpm
shank lubrication air	300-400l/min	79-106gpm	300-400l/min	79-106gpm
flushing air pressure	5-8bar	73-116gpm	700-1200l/min	185-317gpm
flushing air volume **	700-1000l/min	185-264gpm	700-1200l/min	185-317gpm
flushing water	15-20l/min	4.0-5.3gpm	15-30l/min	4.0-7.9gpm
weight	41kg	90lb	41kg	90lb

DOWNLOAD TECHNICAL SPECIFICATION DF410 & DF420 hexagonal shank [PDF-file]

DOWNLOAD TECHNICAL SPECIFICATION DF415& DF425 male shank adapter [PDF-file]

DOWNLOAD TECHNICAL SPECIFICATION DF417-FE & DF427-FE female shank adapter [PDF-file]

*) Numbers given are for standard rotation motors at a peak pressure of 140bar.
Motor options are 12.5cm³, 20 cm³, 32cm³, 40cm³ and 50cm³.

Drilling hard Kuru Black in arctic weather in Finland with a Doofor DF420 rock drill.