Send us an e-mail or
find a location near you.
« Home » Service » Crane Diagnostics » Critical Components Assessment » Hoist Coupling Assesment
Hoist Coupling Assessment
Overhead crane hoist motor and gear case coupling inspections.
Konecranes offers inspections on the mechanical coupling between the hoist motor and the hoisting gear case. It is a critical component in the safe operation of lifting equipment.
Hoist Coupling Failure can Lead to Drop Load Scenarios
If the hoist coupling fails, it may lead to a load drop scenario and subsequent reliance on secondary braking such as regenerative braking or mechanical load brakes. Regenerative braking will not be available since the motor that would be providing the retarding torque would no longer be mechanically connected. If the hoist gear case is equipped with a mechanical load brake, it must be properly adjusted to control the speed of descent of the load.
In-depth inspections:
Most hoist couplings are not visible or accessible during a typical inspection (they are typically hidden within the hoist machinery) requiring the motor/gear case to be disassembled in order to inspect them. Qualified Konecranes technicians take the coupling apart and clean it. The surfaces are visually inspected. After inspection, non-destructive testing may need to be performed. For couplings that are not easily accessible, it is recommended that they be replaced. Proper alignment/assembly and lubrication are crucial in ensuring proper coupling life.
Video
