Page 675 - Iscar

USER GUIDE
GUNDRILLS

Deep Hole Machine Accessories

Drill Sealed Sealing Support Driver Adjustment
Bushing Housing Disk Bushing Adapter

Bushing Guide Bushings
Based on modified DIN 179 specify the “d” diameter of As the gundrill is not a self-centering tool and its
the drill. Carbide bushing is delivered radial rigidity is low (due to diameter to length ratio),
only on request. a guide bushing is an essential component for a
proper gundrill operation. The function of the guide
d = Drill diameter +0.02 bushing is to direct the gundrill into the material
during penetration. The diameter of the guide
bushing should be within 20 microns larger than the
diameter of the drill. Dedicated gundrill machines
d are equipped with a guide bushing system.

Sealing Disk D
Supplied with a single sealing disk or a protection sheet.
Indicate the dimensions needed for your requirements.

B
Sealing Disk Sealing Disk with Protection
Tool Ø “d” Ext. Ø “D” Thick. “ B” Tool Ø “d1” Ext. Ø “D” Thick. “ B”
2 to 6 20 3 2,9 - 5,249 20 7
3,1 to 15,559 32 4 5,25 - 14,449 32 11
15,6 to 25,999 40 4 14,45 - 25,999 40 12
26 to 40 90 4 26 - 41 90 12

Support Bushing Support Bushing with “V” Form
Indicate the “d” diameter of the drill Indicate the “d” diameter of the drill
d1 D1 d1 D1

L1 L
L1 L

D
120º D
Support Bushing
Tool Ø Ext. Ø Length Length Support Bushing with “V” Form
“d1” Ext. Ø “D” “D1” “L” “L1” Tool Ø Ext. Ø Length Length “
1,9 - 16,399 20 26 20 12 “d1” Ext. Ø “D” “D1” “ L” L1”
1,9 - 25,999 30 38 26 16 1,9 - 16,399 20 26 20 12
1,9 - 34 45 50 26 16 1,9 - 23,799 30 38 26 16

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