Doofor Rock Drills - Products - DF522 and DF525 rock drills

Doofor DF522 and DF525 hydraulic rock drills

Doofor DF522 and DF525 are high frequency rock drills for general excavations and quarrying. The rock drill is equipped with a hexagonal female chuck for rod shank sizes 108mm * 22mm (7/8”) or 108 * 25mm (1"). A model with a longer 159mm * 25mm (1") hexagonal chuck is also available.

A hydraulic steel retainer lock cylinder is available from the manufacturer. Doofor DF522 rock drill is suitable for drilling holes of diameter 41mm (maximum 45mm). DF522 can be used with air flushing.

DF522-A is for drilling hard rock.
DF522-C is for drilling softer rock.

percussion power class kW	10	10
piston type	A	C
percussion oil flow l/min	55-80	55-80
pressure bar	100-130	100-130
rotation speed RPM	200-360	150-300
rotaion torque* Nm	107	107
rotation oil flow* l/min	10-19	10-19
shank lubrication air l/min	200-300	200-300
flushing air pressure bar	5-7	5-7
flushing air volume l/min	700-1000	700-1200
air flushing only
weight kg	55	55

DOWNLOAD TECHNICAL SPECIFICATION DF522 [PDF-file]

DOWNLOAD TECHNICAL SPECIFICATION DF525 [PDF-file]

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

PROTECTED BY VARIOUS PATENTS AND APPLICATIONS. MADE IN FINLAND. MANUFACTURER RESERVES ALL RIGHTS FOR CHANGES WITHOUT PRIOR NOTICE. © DOOFOR OY 2008.

Girodrill from Perfora Bagnolo Piemonte
Girodrill made by Perfora s.r.l. of Italy.