Gantry crane bearing life calculation factors work

1 imaginary  gantry crane  bearing radial load;
2 Turn the seat of revolutions per minute;
3 gantry crane imaginary bearing load bearing;
4. Needed gantry crane bearing life;
5 is indeed radial load;
6 is indeed axial load;
7 in terms of the axial load of the conversion factor of the radial load;
8 Consider the nature of the load effect on bearing life born of the coefficients;
9 Characterization bearing life with the first race - the inner race or outer race - the coefficient of rotation;
10 Consider the temperature door  Steel crane   bearing life circumstances influence coefficient born.
Radial - thrust ball bearings and tapered roller bearing radial load is based on an imaginary radial load bearing axial separation to determine. When you have two fulcrum and the same radial load, gantry  jib crane   can be so come bearing device, which makes the axial thrust balance each other. In such case, the imaginary radial load calculation and the same radial bearing.