| Number | #004 |
| Name | Ceramic ball kun |
| Rarity | |
| Habitat | Roller bearing |
| Size | Average size is about the size of a Pachinko(*1) ball *1: Japanese traditional pin ball machine |
| Weight | Several grams |
Ceramic ball kun (Japanese: セラ玉くん Cera-dama kun) is a machinemon of a ceramic ball of a roller bearing.
It has a ceramic body which is superior to steel in many respects.
It has the habit of living in groups in a roller bearing
Its ceramic body is suitable for high speed, high load, longer life, insulation, extreme temperatures, resistance to acid, alkali and salt.
Low rolling resistance
Its body surface is smooth and uniform, reducing rolling resistance.
Light weight allows for high speed
The density of ceramic is less than that of steel and Ceramic ball kun can roll very fast.
Durability
Ceramic is harder than steel. It is advantageous for wear resistance.
Stiffness
Its ceramic body has the strong resistance ability of external force.