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OilLess Bushes, Bush Bearings &
Wear Plates
The Self-Lubricating
OilLess Bushes are Graphite Embedded type bushes, Equi-sized
and Equi-spaced holes are drilled all over the walls to cover
approximately 25% of the total surface area, and are then
plugged with graphite rods acting as solid lubricant which is
constantly available for lubrication during the life time of
the Bush. These are broadly categorised into three groups as
per their Base Material namely
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OilLess Grade
ZA#500 [Copper Based Alloy as Base
Material]
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OilLess Grade
ZA#1000 [ZA-27 as Base Base
Material].
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OilLess Grade
ZA#2000 [Steel Based Alloy as Base
Material]
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OilLess Grade
ZA#500: The Grade
“ZA#500”, is a material where in a special high tensile
strength copper based alloy is used as the base material. In
this base material are inserts of a solid lubricant –
GRAPHITE, These components can be used where operating
temperatures are high and where corrosion resistance is
required. They are similar to 500SP of Japan, Lubo 500 of US
etc, etc.
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OilLess Grade ZA#1000: ZA-27 Graphite
Embedded Bushes are recommended for use in areas where
lubrication is a problem but operating temperatures are @75
°C. The general physical & mechanical properties of
these Bushes are similar to ZA-27 and they have
@20-25% solid Graphite in them. These Bushes are branded as
Grade “ZA#1000”. They are not recommended for application in
water.
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OilLess Grade ZA#2000:
The Grade “ZA#2000”, is a material where in a special
high tensile Steel based alloy is used as the base material.
In this base material are inserts of a solid lubricant –
GRAPHITE, These components can be used where operating
temperatures are very high
@400
°C.
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