Product Overview

The Siemens SQM45 and SQM48 series burner servomotors are advanced actuators used for controlling air dampers, gas valves, and oil flow control valves in industrial oil and gas burner systems. These servomotors regulate combustion air and fuel supply based on burner load requirements to ensure stable and efficient combustion.

The SQM45 / SQM48 actuators are commonly used in combination with electronic fuel-air ratio control systems and burner management systems such as LMV series, allowing precise modulation and automatic combustion control.

The SQM45 models are designed for lower torque applications, while SQM48 models provide higher torque output for larger dampers and valves in medium to large industrial burners.

With durable construction, flexible shaft options, and adjustable running times, the SQM45 / SQM48 series is widely used in industrial boilers, furnaces, and process heating systems where precise burner control is essential.

Key Features

Electromotoric actuator for air dampers and fuel control valves

Designed for oil and gas industrial burners

Compatible with Siemens LMV combustion management systems

Precise load-dependent control of air and fuel

Compact and heavy-duty actuator options

Multiple shaft designs for flexible installation

Reliable operation in demanding industrial environments

Suitable for modulating combustion systems

Applications

• Industrial gas burners

• Industrial oil burners

• Dual-fuel burner systems

• Steam boiler burners

• Industrial furnaces and ovens

• Thermal oil heaters

• Process heating plants

Why Choose Siemens SQM45 / SQM48 burner servomotors?

Trusted Siemens combustion control technology

Precise positioning for accurate air-fuel ratio

Compatible with Siemens burner management systems

Durable construction for industrial use

Suitable for both compact and heavy-duty burners

Long service life with reliable performance

Technical Description

The Siemens SQM45 / SQM48 burner servomotors are electromechanical actuators designed to drive air dampers and fuel valves in combustion systems. The actuator receives control signals from the burner management system and converts them into rotary motion to adjust combustion components.

The SQM45 actuator provides torque up to approximately 3 Nm, making it suitable for smaller dampers and valves, while the SQM48 models deliver higher torque up to around 20–35 Nm, enabling control of larger butterfly valves and heavy air dampers.

Running times vary depending on the model, typically ranging from 10 to 120 seconds for a 90° rotation, allowing flexible integration with various combustion control systems.

These actuators are designed for integration with Siemens LMV electronic fuel-air ratio control systems, which automatically adjust combustion parameters based on burner load conditions.

Technical Specifications