Parameter Value
Model HED 8 OA-2X/350K14 (Part No.
R901102710)Rexroth
Type Piston-type hydro-electric pressure
switchRexroth
Component Series
2XBosch Rexroth AG
Max. Operating Pressure
350 bar (5076 psi)Rexroth
Pressure Adjustment Range
25–350 bar (363–5076 psi) (decreasing)
Pressure Differential per Rotation
≈ 120 bar
Pressure Connection
G 1/4″ (pipeline installation)
Electrical Connection
DIN EN 175301-803 (large cubic connector, 3-
pole + PE)Rexroth
Contact Configuration
Micro switch with NC/NO contact function
(potential-free)Rexroth
Switching Current 1 mA to 2 A (max. 2 A at 250 V AC)Rexroth
Switching Voltage 12–250 V AC/DC
Repeat Accuracy < 1% of set pressureRexroth
Hysteresis Small (application-dependent)Rexroth
Switching Resistance
< 50 mΩ
Seal Material NBR (standard); FKM/low-temperature options
availableRexroth
Ambient Temperature
-25 to +50°C (NBR); -20 to +50°C (FKM); -40
to +50°C (low-temp)
Fluid Temperature -25 to +80°C (NBR); -20 to +80°C (FKM); -40
to +80°C (low-temp)
Fluid Viscosity 10–800 mm²/s
Fluid Cleanliness Class
ISO 4406 20/18/15
Electrical Life ≥ 5 million cycles
Adjustment Type Spindle with internal hexagon, no scale, no
protective capRexroth
Weight 0.723 kg (1.59 lb)
Certifications UL recognized, CE compliant
pressure switch HED 8 OA-2X/3 R901102710 REXROTH
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