標準和可選的 Kaydon Reali-Slim MM® 公制軸承標有 9 位或 10 位零件編號，以便完全識別。位置 1-9 標識材料、尺寸、類型、分離器類型和精度。位置 10（可選）標識非標準內部配合，預緊或間隙。定制和專有軸承無法通過代碼識別，僅標有 9 位數字。

Position 1 2 3 4 5 6 7 8 9 10 Nomenclature Material Bore (mm) Width (mm) Type Separator Precision Internal fit Example K 0 8 0 0 8 X P 0 K

Position 1—Material J AISI 52100 steel with two seals—Nitrile rubber K AISI 52100 steel L AISI 52100 steel and Endurakote® plating N Endurakote® plating S AISI 440C stainless steel W AISI 440C stainless steel with two seals—Nitrile rubber   Position 7—Bearing type A Angular contact C Radial contact X Four-point contact   Position 8—Separator P Standard formed ring, "snap-over" type R Standard formed ring, circular pocket type   Position 9—Precision 0 Kaydon precision class 1 (ABEC 1F) standard   Position 10—Bearing internal fit A .0000 to .0127 mm clearance K .0000 to .0127 mm preload L .0000 to .0254 mm preload Z Other clearance or preload not specified above Empty Standard internal fitup if not specified