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WORKED EXAMPLE - Calculating Hertzian Pressure
A 2 tonne load is placed 600mm from the point of suspension. The bearings are spaced 500mm apart.
Which bearings should be used?
Using the Moment-Balance formula: C = (P . L) / (2 . I) where: P = Weight of the load being moved (N) L = Distance between the load and P, the suspension point (mm) I = Distance of bearings from the suspension point (mm) C = Maximum allowable static force per bearing Assuming the bottom pair of bearings are level with the point of suspension then I = 500mm. The load is cantilevered out at 600mm and hence this is the value of L. Here P is 20000N. Substituting these numbers into the equation gives Looking up this value of C on the Hertzian Pressure table shows that 4.058 is the required bearing size. |
Standard Combined Bearings | |
Channel / Profile Data | |
Jumbo Bearings (4.089-4.096) | |