Patent ID: 8657499

Claim:
A heavy load bearing, comprising: a hollow casing which is formed in a cylindrical shape to form an axial cavity inside; and an assembly including at least two units, each unit including two opposite ends, each end forming a connection portion, the at least two units including at least one set of two adjacent units being axially coupled together with one of the two adjacent units abutting against another one of the two adjacent units to allow at least one set of two abutting connection portions of the at least one set of the two adjacent units to be contacted therebetween to form the assembly, and a largest circumferential outer wall surface between two connection portions of each unit forming a mounting portion to allow the assembly to be fixedly encased in and fully contacted with the cavity of the casing to form the heavy load bearing, each unit further containing an axle hole axially running through the two opposite ends thereof, axle holes of the at least two units forming an axial hole of the assembly for insertion of a spinning shaft to be supported and lubricated by the heavy load bearing; wherein at least one groove is defined between the at least one set of the two adjacent units of the assembly, the at least one groove being axially indented from at least one of the two opposite ends of each unit to a bottom wall thereof and formed between at least one outer wall near the mounting portion and at least one inner wall near the axle hole, at least one set of multiple notches defined between the at least one set of the two adjacent units of the assembly, the at least one set of multiple notches being annularly formed on at least one free end of the at least one inner wall and communicated with the at least one groove and the axle hole, the at least one groove forming at least one storage chamber to store lubricating media, the at least one set of multiple notches forming at least one set of multiple passages of the assembly to communicate with the at least one storage chamber and the axial hole.