These needle roller and cage assemblies are    specially designed so as to be adaptable to the operating environmental conditions for the connecting rods of small and medium reciprocal engines and compressors. The connecting rods are used under a severe operating condition wherein acting load magnitude and direction fluctuate rapidly as well as under a high temperature and strict lubrication environment. The needle-roller and cage assemblies are available both for big ends and for small ends. For big ends, split cages can be provided.