| Number | #001 |
| Name | Spindle unit kun |
| Rarity | |
| Habitat | Machining center |
| Size | 53.4 cm |
| Weight | Very heavy (Over 100kg) |
Spindle unit kun (Japanese: 主軸ユニットくん Syujiku unit kun) is a machinemon of a spindle unit of a machining center.
It has a cylindrical steel body, but it is delicate. While its defense is not so much, its offensive power is extremely high. It can attach a tool to its head and can rotate the tool at high speed with a motor stored in the Planck brane inside its body.
It has four forms, each focused on a different ability.
Spindle unit kun has four forms: Normal Forme, High Speed Forme, High Torque Forme, and High Power Forme.