Technical Parameters Parameter Specification Model Fisher™ 8560 Type Spring-Return, Electro-Hydraulic Actuator Action Spring-Return (Electrically actuated in one direction, spring returns to fail-safe position) Standard Travel 90° quarter-turn (with adjustable travel stops) Power Supply 24 VDC, 110 VAC, 220 VAC (50/60 Hz) are standard options. Control Signal 4-20 mA for proportional control, Discrete (On/Off) Feedback Signal 4-20 mA or 0-10 VDC position feedback (standard) Torque Output Varies by model. Ranges from approximately 1,000 lb-in (113 Nm) to 30,000 lb-in (3,390 Nm) or higher. Stroking Speed Typically 5 to 30 seconds for 90° travel, depending on model and load. Operating Temperature -40°F to 150°F (-40°C to 65°C); optional heaters available for colder climates. Enclosure Rating NEMA 4X / 7 / 9 (weatherproof, corrosion-resistant, and for hazardous locations). Hazardous Area Certification Available for Class I, Division 1 & 2, Groups C, D; Class II, Groups E, F, G.
