Maintenance CNC Machine

Key Responsibilities

1. Breakdown Maintenance

• Respond to machine breakdowns immediately; diagnose and repair mechanical, electrical, hydraulic and pneumatic faults
• Troubleshoot CNC controller alarms (Fanuc, Mitsubishi, Siemens or Heidenhain) and PLC/ladder issues
• Repair or replace spindles, ballscrews, linear guides, ATC (tool changer), turrets, coolant pumps, lubrication and chip conveyors
• Coordinate with machine OEM/vendor for major repairs; supervise vendor work and verify completion
• Record every breakdown: machine, fault, root cause, action taken, downtime hours, parts used

2. Preventive & Predictive Maintenance

• Execute PM schedule (daily/weekly/monthly/yearly) per machine — lubrication, filters, coolant concentration, way covers, belts, air supply, cabinet cooling
• Check and correct machine accuracy: levelling, backlash compensation, spindle runout, alignment
• Monitor spindle vibration, temperature and abnormal noise; plan intervention before failure
• Review and improve PM checklists based on breakdown history
• Train operators on daily autonomous maintenance (TPM) checks

3. Supporting Equipment

• Maintain air compressors, dryers, chillers, CMM environment support, forklifts and workshop utilities
• Support maintenance of ED coating line utilities (pumps, rectifier, oven burners, DI water system) when required

4. Spare Parts Control

• Maintain critical spare parts list per machine with min/max stock levels
• Raise PRs early for long-lead parts (spindle bearings, servo drives, encoders, boards)
• Record spare parts usage in the inventory system; support stock count

5. Records & Reporting

• Maintain machine history files and maintenance logs for ISO/customer audits
• Monthly report: downtime hours per machine, MTBF, MTTR, PM completion %, top 5 recurring faults, maintenance cost
• Propose machine overhaul, retrofit or replacement with cost justification

6. Safety

• Apply LOTO (lockout/tagout) for all maintenance work
• Ensure machine safety interlocks, doors and emergency stops are functional
• Follow ESH requirements for electrical work and chemical handling

KPIs

• PM completion ≥ 95%
• Machine availability ≥ 90%
• MTTR reduced quarter-on-quarter
• Repeat breakdown (same fault within 30 days) ≤ 5%
• Zero safety incidents during maintenance