The CRIDEX DAMPING BAR, similar in
appearance to our TF Indexable Insert Boring Bars, actually performs a vastly different
function. It absorbs energy by transferring motion between the vibrating outer shell and
the internal free floating, spring loaded mass assembly. Absorbed energy is converted to
controlled friction. The inertia effect of the high-density mass makes it tend to remain
stationary during high frequency vibrations, thereby stabilizing the entire bar assembly
and most importantly, the cutting tool itself.
Boring ratios of 8 to 1 are common practice with these chatter-free bars -- and in many cases a ratio of 12 to 1 has been reported.
The damping mass encapsulated in the
front end of the Cridex bars is excited into resonance only when there is adequate length
to create vibration. Shortening the overall length does, to some degree, restrict this
vibration, resulting in less than optimum performance. Therefore, we do not generally
recommend it. However, if a shorter bar is required, the amount of removal should be held
to a minimum.
The " mass" cavity takes up roughly 1/3rd the front end of the bar. Therefore, set screws or other clamping devices, therefore, should never be used in this area. Here, clamping could jam the mass, rendering it useless.
With the proper use, these unique bars will give many years of satisfactory service. Mistreatment such as dropping them on the floor or striking them with a hammer could deform the lead mass, resulting in poor performance. Should repairs be required, they must be made at the factory.
 |
The LF Series of Cridex bars are used for bottoming and facing or boring to a square shoulder. Price of the bar includes carbide insert and chip breaker. The inserts used in this bar are industry standards. Bars are supplied with C-6 grade carbide inserts. C-2 grade is available upon request. |
STYLE LF |
||||||||
| CODE NO. |
TOOL NO. |
A | B | C | D | INSERT | CHIP- BREAKER |
CAP NO. |
|---|---|---|---|---|---|---|---|---|
| 15900 | LF-48VD | 8" | 1/2" | 9/16" | 9/32" | TPG-61-P1 | CBT-6 | F-46C |
| 15901 | LF-59VD | 9" | 5/8" | 23/32" | 23/64" | TPG-61-P1 | CBT-6 | F-57C |
| 15902 | LF-611VD | 11" | 3/4" | 7/8" | 7/16" | TPG-221 | CBT-8 | F-68C |
| 15903 | LF-814VD | 14" | 1" | 1-3/16" | 19/32" | TPG-321 | CBT-12N | F-810C |
| 15904 | LF-1016VD | 16" | 1-1/4" | 1-15/32" | 47/64" | TPG-321 | CBT-12N | F-1011C |
| 15905 | LF-1220VD | 20" | 1-1/2" | 1-11/16" | 27/32" | TPG-431 | CBT-16N | F-1212C |
| 15906 | LF-1424VD | 24" | 1-3/4" | 1-15/16" | 31/32" | TPG-431 | CBT-16N | F-1413C |
Boring bars are supplied with C-6 grade carbide inserts. C-2 grade is available upon request.
On bars using TPG-431 or TPG-432 insert, a SM-37 anvil is required.
C2 Grade for cast iron and non-ferrous metals. C6 Grade for steels and alloys.
