shop math
| TO FIND | |
| RPM | 3.82 x SFM / DIA. |
| SFM | RPM x DIA. / 3.82 |
| IPM | IPT x No. TEETH x RPM |
| IPT | IPM / (No. TEETH x RPM) |
| IPR | IPM / RPM |
| CIM | IPM x WOC x DOC |
| HP | CIM x UHP |
| THREADS | |
| PD | MD + RD / 2 |
| RD | MD - P |
| MR | MD + 3(BW) - (1.5155P) |
| BW | .57735P |
| P | 1 / TPI |
| RPM = | REVOLUTIONS PER MINUTE |
| SFM = | SURFACE FEET PER MINUTE |
| IPM = | INCHES PER MINUTE |
| IPT = | INCHES PER TOOTH |
| IPR = | INCHES PER REVOLUTION |
| CIM = | CUBIC INCHES PER MINUTE |
| HP = | HORSEPOWER |
| PD = | PITCH DIAMETER |
| RD = | ROOT DIAMETER |
| MR = | MICROMETER READING |
| MD = | MAJOR DIAMETER |
| BW = | BEST WIRE |
| WOC = | WIDTH OF CUT |
| DOC = | DEPTH OF CUT |
| P = | PITCH |
| TPI = | THREADS PER INCH |
| UHP = | UNIT HORSEPOWER |
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