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Changing the concept of piston spherical grinding stones.

Challenge the negative spiral
with state-of-the-art INAKEN stones.

Changing to super abrasive stones improves the grinding field dramatically.
With newly developed stones, replacement cycles are decreased significantly.

Regular stones(WA) VS Super abrasive(DIA・CBN)

No need for a large stock of stones due to long stone life.Unmanned production line thanks to long stone life & stable grinding.

KAIZEN results