| Imperial / SI ( Metric ) Conversions | | | |
| | | | Multiply Value By |
| | Imperial | SI | IMP > SI | SI > IMP |
| Power | HP | KW | 0.7457 | 1.341 |
| Torque | LB. IN. | NM | 0.113 | 8.851 |
| Mass | LB | KG | 0.454 | 2.205 |
| Length | IN | MM | 25.4 | 0.0394 |
| | | | | |
| Horse Power & Torque | | Horse Power & Torque |
| | | | | |
| Torque Expressed in Lb. Ft. | | Torque Expressed in Lb. In. |
| | | | | |
| HP = | RPM x Torque | | HP = | RPM x Torque |
| | 5252 | | | 63024 |
| | | | | |
| Torque = | HP X 5252 | | Torque = | HP X 63024 |
| | RPM | | | RPM |
| | | | | |
| Weights of Steel Plate & Bar | | | |
| | | | | |
| Round Bar | 2.67 X Diameter in Inches squared X Length in Feet | |
| | | | | |
| Plate | .2833 X Thickness in Inches X Width in Inches X Length in Inches |
| Or | 41 Lbs / Sq. Ft. per inch of thickness , + – | | |
| | | | | |
| Overhung Loads | | | | |
| An overhung load is a bending force acting on a shaft due to the torque transmitted typically by belt or chain drives |
| | | | | |
| O.H.L. = | 126000 X HP | X F X LF | | |
| | N X D | | | |
| | | | | |
| O.H.L. | Overhung Load in Pounds | | |
| HP | Horse Power | | | |
| N | Shaft RPM | | | |
| D | Diameter in Inches of Pulley or Sprocket | | |
| | | | | |
| F | Service factor | LF | Load Factor | |
| | 1.0 For Chain or Gear Drive | 2.0 For drives with severe shock Loads |
| | 1.5 for Timing Belt Drive | | or High Inertia is present |
| | 2.5 for V Belt Drives | | i.e. , Reciprocating Compressors |
| | 3.5 for Flat Belt Drives | | Crushers, Chippers | |
