According to the shape classification follower; ① top style follower; ② roller follower; cylindrical cam intermittent indexing mechanism ③ flat-bottomed follower. ④ song Hearth follower. When the cam rotation center of a circle arc segment profile in contact with the valve stem precision cam design, the stationary valve stem. Thus, with the continuous rotation of the cam, valve stem available intermittently, as expected regular exercise. Precision cam Sale | Zhucheng positive and machinery (certified) | Hechuan Precision Machinery Co., Ltd. cam timing is provided by a Zhucheng. Zhucheng Zhengyi Machinery Co., Ltd. (www.zhengyijixie.com) (www.zhengyijixie.net) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to the community, and welcomes new and old customers throughout the visit, sincere cooperation for a better future. Zhucheng being a machine - your trusted friend, Company Address: Zhucheng settle hook Industrial Park, Contact: Zeng manager.