What is wax motors?

Wax motors, also known as thermal actuators or wax actuators, are small devices that use thermal expansion of wax to generate linear motion or force. They are often used in HVAC systems, automobiles, and appliances such as dishwashers and washing machines.

The wax motor operates by heating a wax element inside a hermetically sealed capsule, causing it to expand and push a piston or plunger. This movement can be used to control valves, dampers, or switches.

Wax motors are preferred in many applications due to their reliability, simplicity, and low power consumption. They also provide a quieter and smoother operation compared to traditional solenoid actuators.

However, wax motors do have some limitations. They have a limited stroke length and cannot generate high forces, which makes them unsuitable for heavy-duty applications. They also require a certain amount of time to heat up and cool down, which can contribute to slower response times.

Overall, wax motors are a cost-effective and practical solution for many applications that require precise and efficient control of motion or force.