
| Drill | Sealed | Sealing | Support | Driver | Adjustment |
| Bushing | Housing | Disk | Bushing | dapter |
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. D d1 1
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 | Ext. Ø | Length | Length | ||
| Tool Ø “d1” | Ext. Ø “D” | ||||
| 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
B Sealing Disk
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 |
120º D Support Bushing with “V” Form
| Ext. Ø | Length | Length | |||
| Tool Ø “d1” | Ext. Ø “D” | ||||
| “D1” | “ L” | “ L1” | |||
| 1,9 - 16,399 | 20 | 26 | 20 | 12 | |
| 1,9 - 23,799 | 30 | 38 | 26 | 16 |