Mining Machinery Epiroc RD22U Straight Forward Hydraulic Rock Drill for Underground Production
Dimensions and weight
|
Weight |
180 kg (396 lb) |
|
Length (without shank adapter) |
1008 mm (3 ft 6.6 inch) |
|
Height |
235 mm (9.25 inch) |
|
Width |
272 mm (10.7 inch) |
Flushing flow and pressure
|
Flushing water pressure, max |
25 bar (362.6 psi) |
|
Lubricating air consumption |
7 l/s at 3 bar (14.8 cfm at 43.5 psi) |
|
Flushing water consumption* |
40 - 120 l/min (1.4 - 4.3 cfm) |
* Flushing water consumption depends strongly upon hole diamater, bit type, drill rod size and rock hardness. The figures above are typical values for spherical button bits in granite 200 Mpa (36,250 psi).
Impact ratings
|
Impact power, max |
22 kW (29.5 hp) |
|
Input power to rock drill, max |
37 kW (49.6 hp) |
|
Impact frequency |
53 Hz |
|
Drill pressure |
220 bar (3190 psi) |
|
Drill oil flow |
105 l/min (3.71 cfm) |
Rotation ratings
|
Motor size |
(09) 250 cc |
|
Rotation torque, max* |
1550 Nm (1143 lbf-ft) |
|
Rotation speed* |
0 - 140 rpm |
|
Rotation pressure, max |
200 bar (2900 psi) |
|
Oil consumption, max |
75 l/min (2.6 cfm) |
*at drill string
Drilling parameters
|
Rod size |
T45, (T38) |
|
Hole range |
64 - 102 mm (2 ½ - 4 inch) |
|
Optimum hole dimension |
76 mm (3 inch) |
Hose sizes
|
Percussion hose |
3/4 inch |
|
Drain hose |
3/8 inch |
|
Rotation hoses |
3/4 inch |
|
Flushing hose |
1 inch |
|
Lubrication hose |
3/8 inch |
|
Percussion return hose |
1 inch |
Accumulator charge pressure
|
Intake (two accumulators) |
90 bar (1305 psi) |
|
Return |
Atm. |
Shank adapter
|
T45E (extension drilling) |
TBA |
|
T38E (extension drilling) |
TBA |