BALL OR ROLLER BEARING ASSEMBLY

摘要

An antifriction bearing assembly and more particularly a ball or roller bearing assembly in which a pair of annular grease chambers are provided axially adjacent to an annular space formed between outer and inner rings and annular air chambers are further provided axially adjacent to the annular grease chambers, wherein the annular grease chambers are opened only to the annular space and the annular air chambers are communicated with each other by a passage by-passing the grease chambers.