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Frequently
Asked Questions
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Q1.
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Will
run-out increase on replacing Bullet ?
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Ans. |
No
matter how many times you change Bullet, run-out will never
exceed 0.015mm.. |
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Q2. |
Will
the Bullet slip in bench vice during replacement ? |
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Ans. |
As
the Bullet is to be held full tight in the vice it will not slip.
Holding it full tight will not damage the Bullet either. Thus
,across flat is purposely not provided. |
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Q3. |
Will
the Bullet get loosened while in operation ? |
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Ans. |
The
bullet is tightly secured with a preloaded bolt. This ensures
that the Bullet never gets loosened during operation.
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Q4. |
Will
the threads of draw bolt ever get damaged ? |
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Ans. |
As
the bolt is concealed these threads are very well protected
and do not get damaged.
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Q5. |
What types
of bearings are used in Prashtech Live Centres? |
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Ans. |
All
Prashtech Live Centres contain three bearings arrangement
a) Cylindrical
Roller Bearing
b) Thrust
Ball Bearing
c) Deep Groove Ball Bearing
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Q6. |
What
is the maximum permissible job weight? What is the life of
bearing arrangement ? |
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Ans. |
Kindly
refer to load-speed characteristics graphs. To see graphs CLICK
HERE
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Q7. |
Can
Prashtech Live Centres be used continuously throughout the day
? |
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Ans. |
Yes
indeed. They are designed for continuous duty.
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Q8. |
Is
greasing of bearings frequently required ? |
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Ans. |
Prashtech
Live Centres are permanently lubricated using specialty grease. Thus
subsequent greasing of bearings is not required. |
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Q9. |
Can
coolant or dust get inside bearing arrangement ? |
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Ans. |
Since
Oil Seal is provided at front, nothing can enter inside.
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Q10. |
What
if the Centre gets hot during use ? |
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Ans. |
In
Prashtech Live centres heat is generated due to presence
of Oil Seal. It is not caused due to overloading of the
bearings. So there
is no need to worry. |
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Q11. |
Can
Prashtech Live Centres be repaired and how ? |
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Ans. |
Yes
, repairing Prashtech Live Centres is very easy when necessary. We
provide servicing information to all users along with the dispatch details. |
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Q12. |
What
is the hardness of the Bullet ? |
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Ans.
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The
Bullets are through hardened to 60-63 HRC ,and the Housing and
Seal Plugs are toughened.
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Q13. |
How
does one order a Bullet of specific shape as per one's
requirement ? |
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Ans. |
Just
send us the dimensional sketch of the Bullet of the required
special shape, shown as fitted to the Live Centre. For
reference CLICK HERE to see sample
drawings.
Our email :- sales@prashtech.com
Fax no
:- 00 91 20 5290312
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Q14. |
Does
Prashtech manufacture Live Centres and Dead Centres of other
standards such as JARNO TAPER, METRIC TAPER, etc ? |
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Ans. |
Yes
we do, however a minimum order quantity is required .
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Q15. |
How
is the price of Prashtech Live Centres justified ? |
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Ans. |
For
two reasons . First the basic product is service free. Second
, just worn-out Bullet can be replaced , thus bringing down
the operating cost, machine downtime and component rejections.
Hence Prashtech Live Centres are most economical.
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Common
Causes of Failure
How to
replace a damaged Bullet
Other Information
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