For designing · Service Life of OILES Bearing

Service life of OILES Bearings will vary depending on service environment and other conditions. The following formula uses the relation of load and sliding distance. Note that the this formula should be used only as a reference. Estimated Wear Amount (mm) : W = K × P × V × T Specific wear K K : mm/(N/mm2 · m/s · Hr     { mm/(kgf/cm2 · m/min · Hr) } Bearing pressure P P : N/mm2    { kgf/cm2 } Velocity V V : m/s    { m/min } Running time T T : Hr * Specific wear differs from each bearing. The bearing's specific wear is the value of bearing wear from testing divided by the test load, test velosity and test time. Reference of specific wear by lubrication state Lubrication state mm/(N/mm2 · m/s · Hr) mm/(kgf/cm2 · m/min · Hr) Non lubrication 3 × 10-3   ~   6 × 10-4 1  ~   5 × 10-5 Periodical lubrication 3 × 10-4   ~   6 × 10-5 1  ~   5 × 10-7 Oil lubrication 3 × 10-5   ~   6 × 10-6 1  ~   5 × 10-8 * This formula is adopted from the perspective that wear is in proportion to the load and sliding distance. The influence of velocity and load, different modes of operation, type of lubricant used, clearance, surface roughness of mating material, invasion of foreign materials, etc.have not been taken into consideration.

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