| Frequently Asked 
questions --- OilLess / Self-lubricating /Graphite Embedded Bushes Why are the bushes / Bush bearings termed as 
self-lubricating or OilLess ?These bushes have graphite inserts plugged onto the 
walls of the bearings, which always provides the lubrication to the shaft while 
in motion. Hence these bushes can be fitted with initial lubrication and can 
work without regular lubrication.
 What temperatures can these OilLess bushes withstand ?OilLess LB#1000, 
OilLess LB#500, OilLess LB#2000 & OilLess LB#300 can withstand temperatures upto 
80 deg. C , upto 250 deg. C, upto 400 deg. C, upto 400 deg. C respectively. 
Where as ordinary lubrication system fails above 75 Deg. C.
 
Under what service 
conditions can these graphite embedded bushes, bush-bearings work ?These bushes can 
work and performs under severe conditions, dusty conditions, under salty water 
conditions, etc where ordinary bushes simply cannot work.
 What is life of Self-Lubricating Bushes?It is very 
difficult to say the exact life of the bush as it depends on many factors. It is 
normally expected that  the OilLess bearing shall last at least more than 4-5 
times than the conventional bearings.
 How does it compare the properties and functionality with 
respect to Sintered / Oilite / Super-Oilite Bushes ?The Load carrying 
capacity and working Life of Graphite Embedded, OilLess bearings are much higher 
than that of Oilite / Sintered Bushes. The graphite embedded bushes can be 
replaced for  Sintered / Oilite / Super-Oilite Bushes.
 What are black dots in bushes 
contain?Block Dots are the 
solid graphite inserts that provides lubrication to the shaft while in motion.
 Machinability of graphite embedded bushes ?All machining 
operations can be performed which are applicable to conventional bronze 
bearings.
 Availability of graphite embedded bushes ?We do not have any restriction of the sizes and 
quantities. Any size and quantity can be manufactured and supplied as per 
requirement. A minimum wall thickness of @3mm is required to these bush 
bearings.
 What are the different range of graphite embedded bearings 
available ?Four different 
grades namely OilLess LB#500, OilLess LB#2000, OilLess LB#1000 & OilLess LB#300.
 However the Base material can be changed for each grade 
depending on the application requirement. Like high hardness, high corrosion 
resistance, etc, etc.
 
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