... Rows Multi-Boring Machine 1.Spindle distance 32mm 2 Spindle Number: 21X2bits 3.Max drilling depeth 50mm ST-7221A Double Rows Multi-Boring ... wood, flakeboard, medium density fiberboard, etc. This machine has such advantages as high production efficiency, easy operation, processed precision, etc., ... spindles: 32mm 4) Spindle numbers : 2×21 5) Single motor power 1.5kw 6) Total power 3kw 7) Revolution ...