- INDUSTRIES
- SERVICES
| W = Sheet width less trim (inches) | |
| S = Speed in feet per minute (FPM) | |
| D = Days (24 hour) per year of operation | |
| C = Average cost per pound (mat'l and labor) | |
| SG = Specific gravity of material | |
| PPI = Calculated (pounds per cubic inch) | |
| T = Shape tolerance of rolls (+&- .00XX) with current grinding method | |
| PRGT = Shape tolerance of rolls (+or- .0002) ground at PRG | |
Average annual material cost savings |
$ |
| Based on a 50% deviation of roll shape tolerance. W x (S x 12 in/ft.) x (D x 1440 min/day) x C x PPI x (((T x 2) - PRGT) x 50%) |
| Cost of new spare rolls | ||
| Cost of changing rolls | ||
| Cost of new calender | ||
| Bottleneck costs | ||
| Grinding to specified shape and tolerances |