5 10 to 13 which do not exhibit very favorable results in the fatigue test 1 than in the corresponding invention examples nos 17 20 25 to 28 especially no 10 with ni plating had an extremely unfavorable result this result is thought to be affected by conformability and cushion property as a bearing as described heretofore the invention bearings are improved in fatigue resistance and conformability as compared with the conventional bearings thus the objective of the invention can be achieved table 1__________________________________________________________________________sample no hardness ofcomparative chemical composition of bearing alloy wt bearing alloyexample al sn si mn mg v ni cr zr b cu pb sb ti hv5 __________________________________________________________________________1 bal 7 0 3 0 502 bal 7 0 0 01 0 1 5 0 0 1 613 bal 10 0 1 0 0 1 0 01 0 1 1 5 534 bal 10 0 1 5 0 4 0 2 1 0 1 0 0 2 0 2 635 bal 10 0 2 0 0 4 1 0 1 2 0 3 556 bal 10 0 3 0 0 3 0 5 2 0 1 5 737 bal 10 0 1 0 0 3 0 01 3 0 2 8 708 bal 12 0 2 5 0 3 0 1 0 9 1 5 0 3 599 bal 15 0 3 0 0 15 2 0 1 7 0 3 0 01 5710 bal 15 0 1 0 3 0 0 1 0 2 0 01 2 0 7911 bal 15 0 3 0 0 2 0 01 0 01 3 0 1 5 0 8 0 1 0 05 5412.