Coating film retainer

The utility model relates to a film coating retainer, which belongs to the technical field of retainers, and comprises a middle rib, the middle rib is provided with a first support leg extending upwards and a second support leg extending downwards, and the first support leg and the second support leg are respectively distributed at intervals along the circumferential direction; the second supporting legs are distributed between the two adjacent first supporting legs, and grooves used for containing rollers are formed between the two adjacent first supporting legs and between the two adjacent second supporting legs respectively. The coating retainer disclosed by the utility model is good in wear resistance and long in service life. 本实用新型涉及一种镀膜保持架，属于保持架技术领域，包括中间筋，所述中间筋设置有向上延伸的第一支脚和向下延伸的第二支脚，所述第一支脚和第二支脚分别沿周向间隔分布；所述第二支脚分布于两相邻第一支脚之间，两相邻第一支脚之间、两相邻第二支脚之间分别形成有用于放置滚子的凹槽。本实用新型所述的镀膜保持架，耐磨性能好，使用寿命高。