Trouble shooting Trouble shooting (DRS / DRX / DRZ) Trouble condition Condition Cause Countermeasures There is no problem Chip jam Change the cutting conditions A(Inlet side) for inlet, however (External or Internal · Increase the cutting speed gradually hole edge chip stuck) · Lower the feed rate Hole diameter is small diameter is getting Ref. to page, K48,K54 (at hole bottom) smaller at the bottom. or K65 for "Recommended Cutting Conditions". B (Bottom side) A>B There is no problem Internal edge chip jam. Change the cutting conditions A(Inlet side) for inlet, however · Increase the cutting speed gradually hole · Lower the feed rate Hole diameter becomes larger diameter is getting Ref. to page, K48,K54 (at hole bottom) larger at the bottom. or K65 for "Recommended Cutting Conditions". A