Brand

• Neutral (1505)
• FAG (734)
• GRW Gebr. Reinfurt (609)
• EZO (595)
• SKF (521)
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Bore

• C - Cylindrical Bore (7909)
• K - 1:12 Tapered Bore (Standard for Most Types) (1)
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Seal

• 2RSF - Two NBR Contact Seals (8)
• FF - Double Flex Seal (1)
• No Seal (1730)
• 2RS - Rubber Seal on Two Sides (2577)
• ZZ/2Z - Steel Seal on Two Sides (3247)
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Cage Type

• S - Steel or Standard Cage (7613)
• P - Plastic Molded Cage (180)
• M - Brass Cage (1)
• MA - Brass Cage, Centered on Outer Ring (1)
• TB - Hard Fiber Cage (64)
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External Modification

• No External Modification (6711)
• N - Snap Ring Groove in Outer Ring (4)
• NR - Groove and Snap Ring (24)
• F - Flange (1174)
• Special Snap Ring (And Groove) (1)
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Radial Internal Play

• C2 Internal Play (Less than Cn) (26)
• Cn Normal Internal Play (7573)
• C3 Internal Play (Higher than Cn) (247)
• C4 Internal Play (Higher than C3) (11)
• C5 Internal Play (Higher than C4) (7)
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Precision

• Standard Precision (7536)
• P4 Precision (Higher than P5) (43)
• P5 Precision (Higher than P6) (155)
• P6 Precision (Higher than Standard) (90)
• Precision Class P0 = ABEC.1 (9)
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Lubrication

• Food Solid Grease - Food Solid Grease (12)
• Standard Lubrication (7277)
• Low Temperature Grease (98)
• Food Grease (266)
• 2 - High Temperature Grease (49)
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Heat Stabilization

• No Heat Stabilization - Temperatures up to 120 °C (7902)
• S0 - Temperatures up to 150 °C (3)
• S1 - Temperatures up to 200 °C (5)
• S2 - Temperatures up to 250 °C (5)
• S3 - Temperatures up to 300 °C (2)
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Special Treatment

• 120 (3)
• No Special Treatment (7872)
• Stainless Steel Bearing (39)
• Zinc Coated / SS Flingers (3)
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