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 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.
