In his book, Plant Engineer's Handbook, Keith Mobley links the following benefits to PdM:
Maintenance costs - down by 50%
Unexpected failures - reduced by 55%
Repair and overhaul time - down by 60%
Spare parts inventory - reduced by 30%
30% increase in machinery mean time between failures (MTBF)
30% increase in uptime
Now these numbers may seem high. But even if you take only a fraction of these benefits, the financial impact of an effective PdM program at most plants can easily reach into millions of dollars. And, for the typical manufacturing plant, a 10% reduction in maintenance costs has the same bottom line benefit as a 40% increase in sales.
Another advantage of predictive maintenance is this: Studies have shown that with a properly-engineered PdM program, you can replace up to 30% of your Preventive Maintenance tasks (PMs).