The term "engine" is not commonly used when referring to the components of a stage hoist. Stage hoists typically utilize electric motors as their primary power source for lifting and lowering loads. The strength of a stage hoist is more accurately described by its lifting capacity or load rating, which is measured in pounds or kilograms.

When assessing the strength of a stage hoist, you should look at its load capacity, which indicates the maximum weight the hoist is designed to lift safely. The load capacity is a crucial specification that determines the hoist's suitability for various applications.

In the context of a stage hoist, factors that contribute to its performance and strength include:

Load Capacity: This is the maximum weight the hoist can lift. Ensure that the hoist's load capacity meets the requirements of your specific application.

Motor Power: The power of the electric motor is a key factor in determining the hoist's lifting capability. Higher-powered motors can handle heavier loads more efficiently.

Mechanical Design: The hoist's mechanical design, including the construction of gears, pulleys, and other components, influences its overall strength and durability.

Build Quality: The materials used in the construction of the hoist, as well as the manufacturing standards, contribute to its overall strength and longevity.

Safety Features: A reliable hoist should have safety features, such as limit switches, overload protection, and emergency stop functions, to ensure safe operation.

It's important to choose a stage hoist with a load capacity that exceeds the weight of the heaviest object you plan to lift. Additionally, consider factors such as the hoist's speed, control options, and any specific features required for your application.

If you have specific details about the stage hoist you're inquiring about, such as the model or load capacity, I can provide more targeted information.