A55-4TX_EU-EN

DRILLING | 4TEX® Drill: Indexable Carbide Insert Drilling System

Center Height Alignment Proper Center Line Position

A

x-axis of machine

DRILLING

Center Line

Core Area 0.50 mm (0.020")

B

BORING

0.50 mm (0.020")

0.20 mm (0.007")

Proper Center Height Alignment • The correct center height alignment will position the center insert 0.2 mm (0.007") below the center line.

C

REAMING

Core

Center Insert

Center insert above center line

No core

D

BURNISHING

Center Insert Above the Center Line • This will cause fracturing of the center insert • Requires center height adjustment

Center Insert

E

THREADING

1.00 mm (0.040")

0.50 mm (0.020")

Center Insert Too Far Below Center Line • This will cause the drill to interfere with the drilled hole • This will impede chip evacuation on the periphery insert • Requires center height adjustment

Core

X

Center Insert

SPECIALS

A55: 30

www.alliedmachine.com | +44 (0) 1384 400 900 | enquiries.eu@alliedmachine.com