Tools for CNC machines

Boring bars for roughing

cutting conditions

Cutting speed

Because the cutting blade seat is according to ISO, it is posible to use the cutting blade from any producer. The cutting speed is set in accordance to producer's recommendation however the cutting blade must have a proper chip former to create formed chip.

Cutting depth ae

Boring bars are made with both cutting blades axially in the same level so both cutting blades must be set on the same diameter. It is not possible to divide the width of cut for each cutting blade separetly.

Boring range [mm]Maximum width of cut aemax [mm]
steelstainless steelcast ironnonferrous metals
copper, aluminium and its alloy
Ø 30 - 39 3,5 3,0 3,5 4
Ø 38 - 50 5,0 3,5 5,0 6
Ø 48 - 63 5,5 4,0 5,5 6
Ø 60 - 80 6,5 5,0 6,5 8
Ø 76 - 110 7,0 5,0 7,0 8
Ø 105 - 160 8,0 6,0 8,0 9



















Feeding

Boring range [mm]Maximum feed per tooth fzmax [mm]
steelstainless steelcast ironnonferrous metals
copper, aluminium and its alloy
Ø 30 - 39 0,08-0,12 0,05-0,07 0,10-0,15 0,15-0,20
Ø 38 - 50 0,10-0,15 0,06-0,09 0,12-0,20 0,18-0,23
Ø 48 - 63 0,10-0,20 0,07-0,10 0,15-0,22 0,20-0,25
Ø 60 - 80 0,12-0,25 0,09-0,12 0,20-0,25 0,25-0,30
Ø 76 - 110 0,15-0,25 0,10-0,14 0,25-0,30 0,28-0,35
Ø 105 - 160 0,15-0,25 0,12-0,15 0,25-0,30 0,28-0,35


















The real feed is set according to material and the technological process coefficient:

vzorec