Rexroth HED8OH‑1050K14AS

Product Name: Hydraulic Pressure Switch

Product Brief Introduction: Mechanical‑electrical pressure relay for hydraulic system, outputs switching electrical signal when hydraulic pressure reaches preset threshold, used for pressure monitoring, alarm and logic control of hydraulic circuits.

Technical Specifications: Pressure adjustment range 10‑50 bar; K14 dual‑contact switch output (normally open / normally closed); IP65 protection rating; Maximum allowable system working pressure 100 bar; Mechanical service life ≥1 000 000 switching cycles; Hydraulic port standard threaded connection.

Category:
Description

Functional Features: Adjustable pressure setting via external knob; Dual‑contact independent switching output; High pressure‑trigger repeat accuracy; Vibration‑resistant mechanical structure; Good anti‑oil‑pollution performance; Mechanical trigger without external power supply for pressure sensing part.

Application Scenarios: Machine‑tool hydraulic system; Injection‑molding machine hydraulic circuit; Metallurgical hydraulic equipment; Engineering machinery hydraulic station; Pressure overload protection for hydraulic actuators; Hydraulic pressure alarm and interlock control.

Performance Parameters: Pressure repeat accuracy within specified tolerance; High impact‑pressure resistance; Wide ambient temperature adaptability; Stable contact resistance; Anti‑vibration performance for hydraulic pulsation environment.

Material Composition: Stainless steel pressure‑sensing diaphragm; Alloy steel threaded hydraulic joint; High‑strength metal housing; Silver‑alloy electrical contacts; High‑performance compression setting spring; Nitrile rubber sealing O‑rings.

Structural Characteristics: Diaphragm‑type pressure‑sensing mechanical structure; External rotary knob for pressure setting; Integrated micro‑switch assembly; Thread‑in hydraulic connection port; External electrical cable gland; Double‑layer sealing structure for housing protection.

Working Principle: Hydraulic medium pressure acts on stainless‑steel sensing diaphragm. Diaphragm displacement pushes lever‑spring mechanical amplification mechanism, triggers built‑in micro‑switch to complete switching of normally‑open and normally‑closed electrical contacts. Adjust pre‑compression of setting spring via external knob to change trigger pressure threshold.

Installation Requirements: Recommended vertical mounting with pressure‑sensing face downward; Hydraulic pipeline shall be cleaned before installation; Use correct torque for threaded joint tightening; When hydraulic pressure pulsation is large, install pressure‑damping branch pipe; Keep away from strong heat source and strong electromagnetic interference source.

Usage Notes: Do not exceed maximum allowable system working pressure; Prevent solid particle impurities entering pressure‑sensing cavity; Verify trigger pressure setting after installation; Regularly inspect joint for hydraulic leakage; Avoid direct impact on housing; Calibrate pressure threshold periodically for safety‑critical circuits.

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