This would be the loaded hourly cost for your facility divided by the average component placement rate per hour. This would provide the average cost per component placement.

For example your loaded cost is $75 per hour and the placement machine rate is 5,000 components per hour, your cost per component is $0.015.

I am not aware of any standard. The best way I know of is to use the counter on most machines and see how many components per 8 hours have been placed. Then apply overhead and production costs divided by that number.

Additionally, I recommend that you compare that placed component "counter" number against the manufactures "claimed" placement speed. If they are within say 10% you probably are doing pretty well.

I generally find them off 20-40 percent, but the problem is typically downtime during changeover and reloads not the machine. 15 minutes (20 seconds per feeder) to swap out 50 pre-staged feeders would be reasonable and that time should be in your cost calculation.

If you only measure an hour or so you will not see the real numbers, be sure you use at least 8 hours.