Three-quarter view of an orange direct-coupled HVAC damper actuator

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HVAC Damper Actuador

A compact rotary drive that clamps directly to a damper shaft and converts an electrical control signal into repeatable blade position or safety closure.

Universal Direct Shaft Clamp
Adjustable Mechanical End Stops
Manual Gear Release
On-Off Floating or Proportional Control

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Introdução do produto

The HVAC damper actuator combines a reversible electric motor, reduction gear train, position electronics and universal shaft clamp in one sealed housing. It mounts directly on a round or square damper shaft, with an anti-rotation bracket preventing the body from turning. Adjustable stops limit the travel angle, while a manual release allows the blade position to be set during installation. Non-spring and spring-return versions support ordinary modulation, shut-off and selected safety-position duties.

Características-chave

A universal clamp accepts common round and square shafts without a separate crank linkage.

Mechanical end stops define the usable rotation range and protect the damper linkage from overtravel.

Manual override disengages the gear train for blade positioning during installation or service.

Control variants cover two-position, three-point floating and proportional analog operation with optional feedback.

Preocupações do produto do cliente

Actuator reliability depends on correct torque, shaft geometry, travel direction, supply voltage and a fail-position strategy matched to the controlled damper.

The actuator reaches full torque but the damper still leaks because the blade bank needs more closing force.Required torque is calculated from blade area, differential pressure, seal drag and linkage efficiency before selecting the drive.

A loose shaft clamp slips after repeated reversals.A correctly sized self-centering clamp and anti-rotation bracket secure both the shaft and actuator housing.

The control signal opens the damper when the sequence expects closure.Selectable rotation direction and clearly set end stops align actuator travel with the blade position indication.

Loss of power leaves an isolation damper in an uncontrolled intermediate position.A spring-return model drives the shaft to the specified safety endpoint without relying on the controller.

Aplicações típicas

Volume control dampersOutside and return-air dampersVAV terminal bladesShut-off and isolation dampersFire and smoke damper drive systems

Parâmetros técnicos

Typical physical construction ranges for a direct-coupled rotary HVAC damper actuator are listed below.

Material principal	Glass-fiber-reinforced engineering polymer housing with steel gear train and universal steel shaft clamp
Painel de espessura	2.5–4.0 mm molded actuator housing wall
Largura efetiva	100–180 mm typical actuator body width
Comprimento máximo	Up to 250 mm overall actuator body length including shaft clamp
Aço enfrentando espessura	1.5–3.0 mm zinc-plated shaft clamp and anti-rotation bracket
Densidade Core	Approximately 1200–1400 kg/m³ for reinforced polymer housing material
Condutividade térmica	Approximately 0.20–0.35 W/(m·K) for the reinforced polymer enclosure
Superfície acabado	Orange or black impact-resistant molded housing with zinc-plated clamp hardware
Tipo conjunto	Direct universal shaft clamp with anti-rotation bracket, adjustable stops and protected cable entry
Customização	Disponível com base na aplicação pretendida e no ambiente operacional.

Opções disponíveis

24 V or mains-voltage supplyNon-spring or spring-return mechanismOn-off, floating, 0–10 V or network controlAuxiliary switches and position feedback

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