Plain Bearing
Source plain bearing from India's verified manufacturers and exporters on Himalay. Browse the full range for industrial and export applications.
About Plain Bearing
Plain bearings, also known as sleeve bearings, bushings or journal bearings, support a shaft through direct sliding contact rather than rolling elements, making them compact, quiet and well suited to high or shock loads at low to moderate speed. They appear throughout pumps, electric motors, hinges, suspension and steering links, agricultural and construction machinery, and any assembly where a simple, robust, low-maintenance bearing surface is preferable to a rolling bearing. The families divide by how the sliding interface is lubricated: hydrodynamic journal bearings develop a separating oil film at running speed; solid bronze bushings run on applied grease or oil; sintered self-lubricating bronze (oilite-type) is porous and oil-impregnated so it releases lubricant as it warms; and maintenance-free composite bushings such as PTFE-lined steel-backed (DU-type) and wrapped bronze run dry or marginally lubricated. Wrapped and sintered plain bushings are dimensioned to references including ISO 3547. Material governs behaviour: tin and lead bronzes for load and conformability, white-metal/babbitt linings for large journal and engine bearings, sintered bronze for self-lubrication, and PTFE or polymer composites for dry running. The limiting PV (pressure x velocity) value, running clearance, mating-shaft finish and temperature are the controlling parameters. On the configuration side, the key variables are bore and wall for the fit and clearance, the PV rating against the real load and speed, lining type for the lubrication regime, and any flange, chamfer or oil-groove feature; the hardness and finish of the mating shaft strongly drive wear life. Manufacturers generally verify bore, wall thickness and material composition on a sampling basis. Where specified, Himalay coordinates material traceability, dimensional and wall-thickness inspection, hardness and PV/wear data where available, and RoHS/REACH declarations, coordinated as part of the standard order flow.
