6006-ZZ SKF Shielded Radial Ball Bearing (0126) 6300 Series Radial Ball Bearings but they are different in

but they are different in some key dimensions

Bearing Material: 52100 Steel

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and a dust lip to improve contamination exclusion

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6006-ZZ SKF Shielded Radial Ball Bearing (0126) 6300 Series Radial Ball Bearings but they are different inItem: Radial Ball Bearing, Bearing Type: Double Shield, Bore Dia.: 30 mm, Bore Tolerance: +0 0. 01 mm, Outside Dia.: 55 mm, Outside Dia. Tolerance: +0 0. 013 mm, Width: 13 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 2,970 lb., Static Load Capacity: 1,860 lb., Max. RPM: 15,000, Temp. Range: 40 Degrees to 350 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Shield Material: Pressed Steel, Lubrication: Polyrex EM Grease,