... : From 3mm to 30mm 2. Type: Model: 1) Metric series: 603-609 Series, 623-629 Series, 633-639 Series, 682-689 ... MR52 MR52ZZ 692 692ZZ 683 683ZZ MR83 MR83ZZ 693 693ZZ 603 603ZZ 623 623ZZ MR74 MR74ZZ MR84 MR84ZZ 684 684ZZ MR104 ... confidence in cooperating with every potential customer. Miniature Ball Bearing 603-609 Series