What is a typical wrench time benchmark?
Many maintenance organisations operate at 25 to 35 percent wrench time, meaning skilled trades spend only a quarter to a third of paid hours on hands-on work. Best-practice planning and scheduling lifts this to around 50 percent or higher. The gap is almost always waiting for parts, permits, access, and decisions.
Wrench time benchmarks expose how much of the maintenance wage bill is spent waiting rather than working. The gap between typical and best-practice is large and recoverable, because the causes are logistics, not effort.
| Level | Wrench time | What it means |
|---|---|---|
| Typical | 25 to 35% | Most of the wage bill spent waiting and supporting |
| Improving | 35 to 45% | Planning and scheduling starting to bite |
| Best practice | ~50%+ | Disciplined planning, ready backlog, coordinated access |
Ranges on this page are practitioner estimates drawn from operational experience across heavy industry, provided for orientation. Your actual figures will differ. The Diagnostic measures them against your own CMMS and downtime data.
Frequently asked questions
Is 50 percent wrench time realistic?
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