Page 662 - Iscar

USER GUIDE
GUNDRILLS Concentricity Straightness

mm
1.6
mm
0.20

1.0 0.16

0.6 0.10
400 800 mm 250 500 750 mm
Drilling Depth Drilling Depth
Stationary workpiece – rotating tool Rotating workpiece – stationary tool

Chip Box
L

Adjustment
Driver Adapter
Drill Sealed Sealing Support
Bushing Housing Disk Bushing

L = 20xD
1- The support bushing should be according to tube diameter (D3) (see page 658)

Bushing Guide Bushing
Based on modified DIN 179 specify the “d” diameter of A guide bushing is an essential component for a
the drill head. Carbide bushing is delivered proper gundrill operation. The function of the guide
only on request. bushing is to direct the SUMOGUN into the material
during penetration. The diameter of the guide
d = Drill diameter +0.02 bushing should be within 20 microns larger than the
diameter of the drill. Dedicated gundrill machines
are equipped with a guide bushing system.
d

Support Bushing Sealing Disk
D3 indicate the tube diameter Indicate the dimensions needed for
D3 D1 your requirements
D
D3
L1 L

D
Support Bushing B
Ext. Ø Length Length
D3 Ext. Ø “D”
“D1” “L” “L1” Sealing Disk
9.6 - 16,399 20 26 20 12 D3 Ext. Ø “D” Thick. “ B”
9.6 - 25,999 30 38 26 16 9.6 to 15,559 32 4
9.6 - 25,999 45 50 26 16 15,6 to 25,999 40 4

658 ISCAR