| S/n | Component | Possible | Selected | Reason for selection |
|
| Screw Gear Top baring stand power screw nut | Mild steel Mild steel Mild steel Mild steel |
| Can be rolled or drawn, high ductility and good heat treatment and cold working, readily weldable, low strength, high ductility, hardenable by surface hardening process, readily formed into intricate shape because of its low carbon, good heat treatment and cold 110 - 150 brinel 110 - 150 elongation of 25% - 40% can be rolled. |
| 2 | Sol plate Floorplate Shin cover | Galvanized Metal sheet |
| Excellent corrosion, water and oil from shaft deflection frame distortion, properties. |
| 3 | Bearing | High carbon chromium steel (self-aligning: and internally sealed) |
| Compensate for misalignment arising from shaft deflection frame distortion, or foundation deflection. |
| 4 | Sprocket | Iron |
| High compressive strength, good damping characteristics, high torsional strength, low notch sensitivity, low tensile strength, good casting properties, good anti-friction properties, good machineability and rigidity. |