The role of a bearing is to provide relative positioning and rotational freedom while transmitting the load of the shaft to the bearing housing. The factor, which controls the length of the bearing to journal diameter, is known as the L/D ratio. When this ratio is greater than unity, it results in a long bearing, while a ratio less than unity would result in short bearings.
The deflection produced by the journal within the bearing can adversely affect its load carrying ability. This deflection can be greatly reduced by increasing the diameter and decreasing the length of the journal.
The resultant short bearing has a greater flow of oil at the ends, which helps in transferring the heat from the bearing and consequentially reducing the bearing's temperature.
The load carrying ability of the bearing can be increased by reducing the roughness of the sliding surface. A good quality finish and minimum clearance can ensure that the load carrying capability of the bearing is maximized. However, the clearance should not be too small, as it would result in higher bearing temperatures and reduced film thicknesses. Surface treatment also improves the bearing design.
Pallet stretch film is a packing tool used around the world to help reduce the amount of merchandise damaged during transit. This works by keeping boxes that are stacked on a pallet from falling over or creating unbalanced shifts in weight.
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