HQ Series Flameproof Electrical Actuator with Linear-to-Rotary Converter
HQ Series Flameproof Linear-to-Rotary Electric Actuator
The HQ008 / HQ015 – SD-HQ Series Flameproof Linear-to-Rotary Electric Actuator is a compact, high-performance solution designed for precise valve and damper automation in hazardous industrial environments. It combines a linear stayput actuator with a linear-to-rotary conversion mechanism, enabling accurate quarter-turn control for butterfly, ball, plug valves, and dampers.
Engineered with a flameproof (Ex d) enclosure, the actuator ensures safe operation in explosive atmospheres such as oil & gas, chemical, and process industries. The integrated stayput motor design eliminates the need for torque switches, providing inherent protection while maintaining stable positioning.
The actuator operates through a precision trapezoidal screw and nut mechanism, converting rotary motor motion into linear thrust and further into controlled rotary output. This design ensures smooth, jerk-free operation, high positioning accuracy, and long service life.
Its self-locking mechanism securely holds valve position during power failure, while the rugged aluminium housing provides excellent resistance against harsh environmental conditions
Technical Overview
Parameter
Type
Flameproof Linear-to-Rotary Electric Actuator (Single Phase – Stayput Type)
Body Material
High-grade Aluminium Alloy Die-Cast – Corrosion-resistant & robust
Torque Range
40 Nm to 200 Nm (Model Dependent – HQ008 / HQ015)
Motor Type
Single Phase Synchronous Stall Duty Motor
Duty Modes
On-Off / Inching / Modulating
Manual Operation
IP65 / IP66 / IP67 (Flameproof Ex d)
Operating Angle
0° – 90° (Quarter-Turn via Converter)
Ambient Temperature
–20°C to +70°C
Ambient Temperature
–20°C to +70°C
Insulation Class
Class F
Paint Finish
Standard RAL 5021
Industries Served:
Key Features
- Adjustable Stroke & Travel Control
- Adjustable Stroke & Travel Control
- Flameproof (Ex d) Design for hazardous environments
- Linear-to-Rotary Conversion for quarter-turn applications
- Self-Locking Mechanism – Prevents back driving
- Robust Aluminum Housing – Corrosion & impact resistant
Why Choose ?
- Robust Aluminum Housing – Corrosion & impact resistant
- Designed for hazardous and explosive environments
- Proven reliability in continuous industrial operations
- Compact & modular design for easy installation
- Compatible with automation systems (PLC / DCS)