Bosch Rexroth HED 8 OP-2X/50K14V hydraulic pressure switch
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Hydraulic pressure switch

Bosch Rexroth HED 8 OP-2X/50K14V hydraulic pressure switch
Model: HED 8 OP-2X/50K14V · Bosch Rexroth
Maximum operating pressure (bar)350
Seal materialFKM
Inductive switching current at 50 V DC (A)0.5
Mounting typeSubplate mounting
Maximum ambient temperature (°C)50
Full specifications ↓ Technical catalog · PDF

Description

HED 8 OP-2X/50K14V, manufacturer material number R901108001, is a Bosch Rexroth piston-operated hydraulic pressure switch with a potential-free changeover contact and FKM seals. The OP execution uses subplate mounting. A spindle adjusts the decreasing-pressure switching point over the documented 5–50 bar range; the delivered trip setting is not specified.

The separate 350 bar maximum operating-pressure limit is not the switching range. Switching differential depends on set pressure and the original characteristic curves. K14 is a three-pole plus protective-earth connector to EN 175301-803; the mating connector is separately ordered. On rising pressure, contacts 1–2 open and 1–3 close.

The applicable original RE50061, edition 2017-08, documents the pressure-dependent contact behavior and conditional electrical ratings. The IP65 rating requires the mating connector to be fitted and screwed in place. The representative manufacturer photograph may show a different mounting or adjustment option.

Full specifications

Technical specifications
Component type Hydraulic pressure switch
Maximum decreasing-pressure adjustment (bar) 50
Maximum operating pressure (bar) 350
Pressure class (bar) 50
Inductive switching current at 50 V DC (A) 0.5
Maximum switching frequency (1/h) 7200
Minimum switching current at 24 V DC (mA) 1
Resistive switching current at 24 V DC (A) 2
Resistive switching current at 250 V AC (A) 2
Mounting type Subplate mounting
Maximum ambient temperature (°C) 50
Maximum fluid temperature (°C) 80
Maximum viscosity (mm²/s) 800
Minimum ambient temperature (°C) -20
Minimum fluid temperature (°C) -20
Minimum viscosity (mm²/s) 10
Series 2X
Adjustment method Internal-hexagon spindle without scale or cap
Catalog rating conditions Pressure class 50 bar; decreasing-pressure adjustment 5–50 bar. The separate maximum operating pressure is 350 bar, not a trip setting, proof pressure or burst pressure. Switching differential depends on set pressure and the original curves.
Contact behavior on rising pressure Terminals 1–2 open; terminals 1–3 close
Contact function Potential-free changeover; normally closed and normally open
Electrical connector K14; EN 175301-803, 3-pole + PE
Factory model code HED 8 OP-2X/50K14V
Manufacturer Bosch Rexroth
Manufacturer part number R901108001
Mating connector supplied No
Minimum decreasing-pressure adjustment (bar) 5
Product family HED8
Repeatability Less than ±1% of the set pressure
Sensing principle Piston-operated mechanical switch
Technical specifications
Seal material FKM
Technical specifications
Ingress protection IP65 only with mating connector fitted and screwed in place