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 Needle Roller and Cage Assemblies for connecting rod bearings direction fluctuate rapidly as well as under an high temperature and strict lubrication environment. Therefore, special measures are manly undertaken for the cage structure, material and machining method so that the needle roller and cage assemblies are resistible to the said operating condition and environment. NTN Needle Roller and Cage Assembly, Series: KV Series, 105 mm Bore, 113 mm OD, 29.8 mm Width, High Carbon Chrome Steel, 100 °C