A Comprehensive Preventive Maintenance Checklist for Industrial Robots

2026-09-02

1. The Importance of Scheduled Maintenance

Industrial robots are built for years of continuous operation, but mechanical components subjected to millions of acceleration cycles require strict adherence to preventive maintenance (PM) schedules to avoid unscheduled downtime and expensive reducer burnouts.

Industrial Robots arm

2. Maintenance Intervals & Task Checklist

Daily / Weekly Routine Inspection

Inspect internal and external dress packs for cable friction or jacket wear.

Check for abnormal mechanical noise or vibration in joints J1 through J6 during operation.

Verify emergency stop circuits, safety light curtains, and door interlocks.

Annual / 5,000 Operating Hour Maintenance

Gearbox Grease Replacement: Drain and flush old synthetic grease in RV cycloidal and harmonic gearboxes, replacing with specified robot grease (e.g., Vigor Grease / Molywhite).

SMB Battery Replacement: Replace the controller backup batteries while powered on to retain encoder zero-position calibration data.

Brake Inspection: Test motor mechanical hold brakes on vertical axes (J2/J3) for slipping under full rated payload.

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