Sandvik Coromant Silent tools - users guide - Manual (Page 24)

24
Bar diameter
dm
m
, mm
570-3C bars, short design
l
1
, mm l
1
min, mm
570-3C bars, long design
l
1
, mm l
1
min, mm
Cut off boring bar length
The most simple example of a special adaption is
shortening a standard bar.
In a Silent Tools boring bar the built in dampening
mechanism is limiting the minimum length after cut-off.
Bar diameter
dm
m
, mm
570-4C bars, mm
For 570-4C bars,
clamping over the
damping mechanism
is allowed.
l
1
l
1
min
When a 570-3C short design bar is cut-off to minimum
length, the clamping length must not exceed 3 x dm
m
to
avoid clamping over the dampening mechanism.
l
1
min; minimum length after cut-off
l
1
; bar length before cut-off
Modification of dampened Silent Tools 570-3C bars.
l1min
156
200
255
320
408
518
628 16
20
25
32
40
50
60 100
125
155
190
240
305
380 -
-
330
416
528
668
808 -
-
255
320
410
520
630
330
430
510 40
50
60 160
200
240