Epiroc ER-L Series - Hydraulic Settings (Explanation for Following Diagrams)

Safety and operating instructions
© Anbaufräsen PC GmbH | 3390 5221 01 | 2020-09-07
Original Instructions
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13.3 Hydraulic settings (explanation for following diagrams)
Q = Oil flow rate (l/min)
n = Cutter drum revolution (rpm)
p = Operating pressure (bar)
M = Torque at cutter drum (Nm)
P = Recommended operating setting (see technical data)
1 = Upper limit of the recommended power range:
The drum cutter must not be operated simultaneously at maximum operating pressure and maximum oil flow rate, other-
wise the permissible nominal power is exceeded. The drum cutter must be operated within the recommended power
range.
The higher the operating pressure the higher the cutting force and torque.
The higher the oil flow the higher the rotational speed and pick speed.
2 = maximum permissible motor load:
The combination of oil flow rate and operating pressure must not exceed the nominal power of the drum cutter.
The nominal power is checked according to the following formula:
Nominal power (kW) = p (bar) x Q (l/min) / 600