Page 310 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE
GUNDRILLS Deep Hole Machine Accessories

Drill Sealed Sealing Support Driver Adjustment
Bushing Housing Disk Bushing dapter

Bushing Support Bushing
Based on modified DIN 179 specify the “d” diameter of Indicate the “d” diameter of the drill
the drill. Carbide bushing is delivered only on request. d1 D1

d L1 L

d = Drill diameter +0.02 D
Guide Bushings Support Bushing
As the gundrill is not a self-centering tool and its radial Tool Ø “d1” Ext. Ø “D” Ext. Ø Length Length
rigidity is low (due to diameter to length ratio), a guide “D1” “L” “L1”
bushing is an essential component for a proper gundrill 1,9 - 16,399 20 26 20 12
operation. The function of the guide bushing is to direct 1,9 - 25,999 30 38 26 16
the gundrill into the material during penetration. The 1,9 - 34 45 50 26 16
diameter of the guide bushing should be within 20 microns
larger than the diameter of the drill. Dedicated gundrill Support Bushing with “V” Form
machines are equipped with a guide bushing system.
Indicate the “d” diameter of the drill
Sealing Disk d1 D1
Supplied with a single sealing disk or a protection sheet.
Indicate the dimensions needed for your requirements.
L1 L
D

120º D
Support Bushing with “V” Form
Ext. Ø Length Length
Tool Ø “d1” Ext. Ø “D” “D1” “ L” “ L1”
B
1,9 - 16,399 20 26 20 12
Sealing Disk 1,9 - 23,799 30 38 26 16
Tool Ø “d” Ext. Ø “D” Thick. “ B”
2 to 6 20 3
3,1 to 15,559 32 4
15,6 to 25,999 40 4
26 to 40 90 4
Sealing Disk with Protection
Tool Ø “d1” Ext. Ø “D” Thick. “ B”
2,9 - 5,249 20 7
5,25 - 14,449 32 11
14,45 - 25,999 40 12
26 - 41 90 12

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