Hydraulic characteristics Description, value, unit
Maximum operating pressure (ports 1 and 2) 420 bar
Maximum flow rate 350 l/min
Flow direction 1 ? 2 / 2 ? 1, see symbols
Hydraulic fluid HL and HLP mineral oil to DIN 51 524;
for other fluids, please consult BUCHER
Hydraulic fluid temperature range ?25 °C +80 °C
Viscosity range 10500 mm2/s (cSt), recommended 15...250 mm2/s (cSt)
Minimum fluid cleanliness
Cleanliness class to ISO 4406 : 1999
class 20/18/15
Electrical characteristics Description, value, unit
Supply voltage 12 V DC, 24 V DC
115 V AC, 230 V AC (50 60 Hz)
Supply voltage tolerance ± 10 %
Nominal power consumption V DC = 27 W, V AC = 25 W (WR22GN / WR22ON)
V DC = 8 W (WR22GL / WR22OL)
Relative duty cycle 100 %
Protection class to EN 60 529 IP 65 / IP 67, see Ordering code\"
(when connector plugs are properly fitted)
Electrical connection 3?pin square plug to ISO 4400 / DIN 43 650 (standard)
for other connectors, see Ordering code\"
