General Features

Since being the first in 1976 to introduce indexable boring

bars, Sumitomo Electric has been continuously developing

a comprehensive range which includes the SEC-Small Hole

boring bar series, high rigidity boring head series, with either

steel / carbide shanks, and the latest anti-vibration mechanism

- SumiTurn X-Bar series coupled with a wide variety of insert

grades and chipbreakers, cover a whole range of process

requirements.

Features l Wide selection for various boring operations

l Minimum bore diameter from ø5,5mm onwards

l New anti-vibration boring bars, SumiTurn X-Bar.

l High rigidity head-design for small boring bars

l Wide selection of grades and chipbreakers available for various processes and work materials

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Series

Good Chip Evacuation Chatter Killer System

from new head design - Eliminates Vibration

Unique structure of X-Bar head Evacuates Evacuates long chips short chips

Vibration direction in cut Strong cross Ribbed structure for

section to withstand maximum The damper resists vibration

high cutting force rigidity l New negative type ”X Bar” with high performance Application Guide double clamping system

l Anti-Vibration Steel Shank Carbide shank Low cost solution for long precision bores - l eliminates chatter - improves productivity and Rigid shank surface finish for long high 8 – precision bores 7 – 6 – 5 –

4 – (X-Bar for pos. inserts) (X-Bar for neg. inserts) ATTENTION:

l Steel shank 3 – Please keep this area free to get the effect of 2 – ”X Bar” chattering killer system

1 –

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8 10 12 16 20 25324050Min. over hang

Shank size, ød (mm) length = 3,5 x ød