SmartTork™

SmartTork™ Elevator Hoistway Door Closer

The SmarTork Elevator Hoistway Door Closer saves money and energy, eliminates noise and increases profits. Not to mention, after more than 1,000,000 cycles, there’s no measurable deviation from torque and tension ratios. The spirator has a patented spring design that overcomes door-closing problems caused by high-hoistway air pressure and wind shaft velocity.

With its helical-groove design, SmarTork provides more tension in the “door-closed” position than in the “door-open” position and regains tension as it closes the door. The unihub makes it interchangeable with most square-shaft or dual-pin mounting brackets and meets or exceeds ASME A17.1 and related codes.

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