Overhead crane Troubleshooting: Causes & Fixes

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Problems on this page:

Will not lift or hoist motor fault Load drifting or brake slipping Travel or trolley fault

Will not lift or hoist motor fault

Hits OEE: Availability

Symptoms: Hoist will not raise the load, hums or trips, no lift.

Overload or upper-limit fault

Check the load against rating; test the upper-limit switch.

Brake not releasing or motor fault

Inspect the hoist brake and motor; check contactors.

Control or interlock fault

Verify the pendant/radio, E-stops and interlocks.

Prevention: Load management, brake/limit testing, control inspection.

Load drifting or brake slipping

Hits OEE: Availability

Symptoms: Load creeps down when stopped, poor spotting, safety concern.

Worn or maladjusted brake

Adjust or replace the brake; check the lining and gap.

Brake contamination

Remove oil/grease contamination; fix the source.

Coupling or gearbox wear

Inspect the drive train for backlash and wear.

Prevention: Brake inspection schedule, contamination control, drive checks.

Travel or trolley fault

Hits OEE: Availability

Symptoms: Bridge or trolley will not move, jerks, or trips on travel.

Wheel/rail debris or misalignment

Clean and align rails; check wheels and end stops.

Drive or VFD fault

Check the travel motor, brake and drive.

Festoon/collector or control fault

Inspect power feed (festoon/conductor bar) and controls.

Prevention: Rail/wheel maintenance, drive checks, power-feed inspection.

Overhead crane troubleshooting FAQ

Overhead crane: what causes will not lift or hoist motor fault, and how do I fix it?

Symptoms: Hoist will not raise the load, hums or trips, no lift. Likely causes: Overload or upper-limit fault; Brake not releasing or motor fault; Control or interlock fault. Fixes: Check the load against rating; test the upper-limit switch. Inspect the hoist brake and motor; check contactors. Verify the pendant/radio, E-stops and interlocks. Prevention: Load management, brake/limit testing, control inspection.

Overhead crane: what causes load drifting or brake slipping, and how do I fix it?

Symptoms: Load creeps down when stopped, poor spotting, safety concern. Likely causes: Worn or maladjusted brake; Brake contamination; Coupling or gearbox wear. Fixes: Adjust or replace the brake; check the lining and gap. Remove oil/grease contamination; fix the source. Inspect the drive train for backlash and wear. Prevention: Brake inspection schedule, contamination control, drive checks.

Overhead crane: what causes travel or trolley fault, and how do I fix it?

Symptoms: Bridge or trolley will not move, jerks, or trips on travel. Likely causes: Wheel/rail debris or misalignment; Drive or VFD fault; Festoon/collector or control fault. Fixes: Clean and align rails; check wheels and end stops. Check the travel motor, brake and drive. Inspect power feed (festoon/conductor bar) and controls. Prevention: Rail/wheel maintenance, drive checks, power-feed inspection.

Guidance only. Always follow lockout/tagout and your site's safe-work procedures, and verify against OEM manuals before acting.

Stop the same fault coming back

Recurring overhead crane stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: EU-built, so your production data stays in EU jurisdiction, with computer-vision true-cause of micro-stops, a closed loop from PLC-read OEE to an auto-routed work order, and ISO 27001 / 20000-1 / 9001 (supports audit-readiness).

See how Fabrico finds root cause

OEE Lab is built and operated by Fabrico. The directory stays free.

Methods that cut recurring stops: the six big losses · root cause analysis · preventive vs predictive maintenance · TPM · SMED & changeover