Brand

• INA (1862)
• FAG (903)
• SKF (744)
• NSK (497)
• Neutral (325)
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Bore

• C - Cylindrical Bore (5249)
• K - 1:12 Tapered Bore (Standard for Most Types) (1654)
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Seal

• No Seal (5159)
• 2RS - Rubber Seal on Two Sides (86)
• ZZ/2Z - Steel Seal on Two Sides (196)
• RS - Rubber Seal on One Side (1)
• 2L - LS-seal at Both Sides (1448)
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Cage Type

• S - Steel or Standard Cage (996)
• P - Plastic Molded Cage (288)
• M - Brass Cage (1742)
• MA - Brass Cage, Centered on Outer Ring (15)
• TB - Hard Fiber Cage (55)
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External Modification

• No External Modification (5248)
• W26 - 6 Lubrication Holes+Groo in IR (1)
• N - Snap Ring Groove in Outer Ring (15)
• NR - Groove and Snap Ring (52)
• 2I - 2 Snap Rings in I.D. (2)
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Radial Internal Play

• C2 Internal Play (Less than Cn) (134)
• Cn Normal Internal Play (4430)
• C3 Internal Play (Higher than Cn) (1264)
• C4 Internal Play (Higher than C3) (102)
• C5 Internal Play (Higher than C4) (152)
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Precision

• HC5 + SP - HC5 + SP (1)
• Standard Precision (4336)
• P4 Precision (Higher than P5) (398)
• P5 Precision (Higher than P6) (612)
• P6 Precision (Higher than Standard) (56)
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Heat Stabilization

• No Heat Stabilization - Temperatures up to 120 °C (6841)
• S1 - Temperatures up to 200 °C (38)
• S2 - Temperatures up to 250 °C (6)
• S3 - Temperatures up to 300 °C (29)
• S5 - Temperatures up to 400 °C (1)
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Running Surface

• Cylindrical (1)
• Standard (16)
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