Pressure Relays ‌Pressure Switch Rexroth HED8OH-20 50K14 High Precision Control

The Rexroth HED8OH-20 50K14 Pressure Relays offer high-precision control and electric safety for industrial applications.

• High-precision control: ±0.5% accuracy with PID closed-loop regulation technology
• Pressure protection: Damping hole structure buffers sudden pressure changes
• Durable construction: Oil-resistant rubber sealing rings and precision-machined valve body
• Intelligent diagnostics: LED status indicators and fault code output
• Wide compatibility: 24V DC input compatible with industrial standard power supplies
• Versatile applications: Suitable for machine tools, injection molding machines, and metallurgical equipment

• Factory Setting Pressure: 110-130psi
• Terminals: #8-32 screws, 1/4"
• Sample Rate: 5 times per second
• Contact Type: SPDT
• Contact Rating: 10A @ 125/250VAC
• Endurance Test Cycle: 100,000 times
• Primary Usage: Water pump control

• Select appropriate model for system pressure range (HED 8 series supports 250Bar)
• Ensure terminal tightening and protection from electromagnetic interference
• Use shielded cables for signal lines to reduce noise

• Calibrate set values using Rexroth special software
• Regularly check spring preload and micro switch contacts
• Perform functional tests every 2000 hours of operation

• Avoid high dust concentration or humidity >90% environments
• Do not use with unclean hydraulic oil or impurity-containing media
• For long-term storage, apply anti-rust oil and seal package