Maintenance

MTTRMean Time To Repair

The average time to restore equipment to operation after a failure — lower is better.

Mean Time To Repair (MTTR) is the average time it takes to diagnose and fix a failure and return the asset to service. Lower MTTR means faster recovery and higher availability.

MTTR is reduced through spare-parts readiness, technician training, standardized repair procedures, and good machine design for serviceability. It is the natural partner of MTBF in reliability analysis.

Go Deeper
Preventive & Predictive Maintenance guide→Downtime Cost Calculator→
Related Terms
MTBF
The average operating time between equipment breakdowns — a key reliability metric where higher is better.
Availability
The percentage of planned production time that equipment is actually running — one of the three OEE factors.
Downtime
Any period when equipment is not producing during planned production time, whether planned or unplanned.
OEE
The gold-standard equipment metric: Availability × Performance × Quality. World-class is 85%+.
TPM
A system for maximizing equipment effectiveness through operator involvement and proactive maintenance, targeting zero breakdowns.

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