Anatural-circulation pillow-block bearing with lyd 5 1 has a journal diameter d of 2.500 in with a unilateral tolerance of 20.001 in. the bushing bore diameter b is 2.504 in with a unilateral tolerance of 0.004 in. the shaft runs at an angular speed of 1120 rev/min; the bearing uses sae grade 20 oil and carries a steady load of 300 lbf in shaft-stirred air at 70°f with a 5 1. the lateral area of the pillow-block housing is 60 in2 . perform a design assessment using minimum radial clearance for a load of 600 lbf and 300 lbf. use trumpler’s criteria.