Reali-Slim® Bearings Identification and Part Numbering System Kaydon Bearings marks Reali-Slim bearings with an (8) or (9) digit part number for complete identification. Positions 1-8 identify materials, size, type, and precision. Position 9 (optional) identifies non-standard internal fit. Position The examples shown are some of the most popular options for Reali-Slim bearings. For custom solutions and additional information, please refer to Kaydon Catalog 300. Positions 1-5 are explained on this page; Positions 6-9 on the other side. 6 Position 2 – Series Standard Cross Section Open Bearings Position 1 – Material Races/Balls Seals, Shields with Two seals—Nitrile rubber with Two seals and ENDURAKOTE® plating with No seals or shields with No seals and ENDURAKOTE® plating P – ISI 17-4PH Steel A *Ceramic Balls with No seals or shields with Two seals—Nitrile rubber X – ISI 52100 Steel A *Ceramic Balls Y – ISI 440C A Stainless Steel *Ceramic Balls with No seals or shields with One seal—Nitrile rubber * maller section applies when position 3 is S alphabetic—see following explanations of Positions 3, 4, and 5. Z – Other *See Section 6 of Kaydon Catalog 300. Position 3, 4 and 5 – Size (Bearing Bore) Numeric Characters - Nominal bearing bore in inches multiplied by ten Alphabetic Characters “A” In Position 3 in combination with “A” in Position 2 denotes .187 x .187 Series “A” In Position 3 in combination with “H” in Position 2 denotes .187 x .250 Series Examples - 040 = 4.0" Bore, 120 = 12.0" Bore, 400 = 40.0" Bore "10" following "AA" in Positions 2 & 3 = .187 x .187 Series with 1.0" Bore "15" following "HA" in Positions 2 & 3 = .187 x .250 Series with 1.5" Bore

Reali-Slim® Bearings Identification and Part Numbering System Position Position 6 – Bearing Type Position 8 – Precision A ngular contact single bearing (not ground for universal duplexing) Angular contact pair—duplexed back to back Radial contact Angular contact pair—duplexed face to face Angular contact pair—duplexed tandem A ngular contact single bearing—ground for universal duplexing Four-point contact Z ther clearance or preload O not specified above Position 7 – Separator - Bearing Type noted Non-metallic composite, segmental, “snap-over” type - C, X Phenolic laminate, one-piece ring, “snap-over”...