PIN TYPE ROLLING BEARING

PURPOSE:To solve the stress concentration to a pin and improve bearing strength by extending one end part opposed to a hollow roller of a taper bush, protruding the end surface of the extended end part to the outside of a welding hole on the other side plate so as not to be interfered with the hollow roller. CONSTITUTION:One end part opposed to a hollow roller 3 of a taper bush 5 is extended, and the end surface of the extended end part is protruded to the outside of the welding hole 4a of a side plate 4 up to the position never interfered with the hollow roller 3. Thus, this end surface is never constrained by the side plate 4, when a large load or impact load acts thereon, the stress concentration to a pin 2 in the contact part with the end surface bore opposed to the hollow roller 3 of the taper bush 5 can be moderated by the elastic deformation of the end surface part of the taper bush 5, and the cracking of the pin 2 can be prevented to improve the bearing strength. When the carburizing area of the pin is extended to the middle part of the taper bush, the strength of the pin in the one end part opposed to the hollow roller is improved, and the bearing strength can be further improved.