Page 98 - Threading_Handbook

2.7.2 MINICHAM Threading Bars for Internal Threading
THREAD TURNING The MINICHAM line includes solid carbide bars with coolant channels for producing

internal threading at 4 mm minimum bore diameter. The solid carbide boring bars expand
the current boring overhang range and provide improved performance relative to steel bars
due to their high rigidity feature. The concept is based on a self-clamping miniature insert
mounted on a 6mm diameter solid carbide bar that fits into ISCAR’s PASSPORT holders
MG PCO-... -6-8. The mini bars for right-hand machining are supplied with shank extensions
of 10mm or 20mm.

Bars with unique
self-clamping
system

Basic Dimensions of Boring Bars

LDRED MG PCO...

BDRED Carbide DCONMS
DMIN
WF
CND
CDX
LF
LF — Functional length

WF — Functional width
LDRED — Body diameter length

BDRED — Reduced body diameter
CND — Coolant entry diameter
CDX — Cutting depth maximum

DMIN — Minimum bore diameter

DCONMS — Connection diameter of machine side

Main Advantages
• Available with internal coolant channels

• Suitable for work next to shoulder
• Easy and fast insert mounting
• No setup needed after each insert indexing
• Easy handling of insert
• Suitable for all types of lathe machines

• No spare parts

98 ISCAR