Hydraulic press safety is non-negotiable. These 5 features protect operators and prevent costly accidents.

1. Two-Hand Control System

Requires simultaneous activation of two buttons spaced apart, ensuring operators hands are clear of the danger zone. Must meet ISO 13851 standards.

Implementation: Category 3 or 4 safety circuit, anti-tie-down feature

2. Light Curtains (AOPD)

Photoelectric sensors create an invisible barrier. Press stops immediately if beam is broken during operation.

Specifications: Resolution ≤30mm, response time <25ms, height coverage per risk assessment

3. Pressure Relief Valve

Prevents overloading by releasing hydraulic pressure when system exceeds rated tonnage. Protects frame, cylinder, and tooling.

Setting: 110-115% of rated pressure, calibrated annually

4. Emergency Stop System

Red mushroom-head E-stop buttons at multiple locations. Must cut all power and dump hydraulic pressure immediately.

Requirements: Category 0 stop (immediate), hardwired (not PLC-dependent), manual reset

5. Mechanical Safety Blocks

Physical blocks that support the ram during die changes and maintenance. Prevents accidental descent.

Usage: Always engage before entering press, rated for full tonnage

Safety Standards Compliance

• ISO 16092: Machine tool safety – Presses
• ANSI B11.2: Hydraulic power presses
• CE marking (Europe)
• OSHA 1910.217 (USA)

Training Requirements

All operators must complete certified training covering: safe operation, lockout/tagout, emergency procedures, daily inspections.