High-strength exhaust rocker arm

The utility model provides a high-strength exhaust rocker arm, and belongs to the field of engine accessories. The problem that an existing exhaust rocker arm hole is seriously abraded is solved. The high-strength exhaust rocker arm comprises an exhaust rocker arm body, a shaft hole connected with a rocker arm shaft in a matched mode is formed in the exhaust rocker arm body, a lining assembly connected with the rocker arm shaft in a matched mode and used for improving friction resistance strength is arranged in the shaft hole, and the lining assembly is composed of an outer lining, an inner lining and a plurality of balls. An installation cavity for installing a plurality of balls in a rolling mode is formed between the outer lining and the inner lining in a matched mode, through holes are formed in the inner circumferential wall of the inner lining, and an oil storage cavity for storing lubricating oil is formed in the circumferential wall of the outer lining. The inner circumferential wall of the outer bush