Key Features
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Rugged Construction: Made from durable metal and high-strength components.
- Dual-Function Control: Operate two crane motions at once.
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Ergonomic Design: Comfortable grip for long hours of operation.
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High Accuracy: Ensures precise control and movement of cranes.
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Safety Switches: Built-in contact blocks prevent accidental operations.
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Customizable Design: Available with different lever configurations and contact ratings.
How It Works
The Gravity Limit Switch operates on a simple mechanical principle:
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A weighted lever is attached to a rotating shaft driven by the movement of the crane or hoist drum.
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As the drum rotates and reaches the set limit (up or down), the lever moves due to the gravity-based mechanism.
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The lever’s movement activates internal electrical contacts, which either cut off or reverse the motor circuit.
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This stops the motion of the crane or hoist, preventing over-lifting or over-lowering of the load.
Because it relies on gravity instead of spring tension, it ensures consistent operation even after long-term use.