符合要求的軸承尺寸的軸承型號如下：
開式： 6304
帶鐵防塵蓋： 6304-Z/6304-2Z/6304Z/6304ZZ/6304.ZR/6304.2ZR
帶膠密封圈： 6304-RS1/6304-2RS1/6304.2RSR/6304DU/6304DDU/6304VV/6304V/6304LU/6304LLU/6304LB/6304LLB/6304-RU/6304-2RU/6304-RS/6304-2RS
帶止動槽環：6304N/6304NR/6304-ZNR/6304-2ZNR/6304ZN/6304ZZN
