SKF 6303 Bearing

SKF 6303 Bearing - The heavy-duty cousin of the everyday 6203. A 17mm shaft doesn't always take a 6203. Step up to a harder-working motor and you'll often find the 6303 — same 17mm bore, but a beefier 47mm outer and 14mm width that carries more load and shrugs off more heat. It's the heavy-duty option in the 17mm family, built for pump motors that run hot and long. The thicker section resists the flex that wears an under-spec bearing out early. When a bigger motor on a 17mm shaft starts to drone, the 6303 is usually the bearing it wants — check yours before you order. Features Heavy-Duty 63 Series: A beefier body than the everyday 6203, built for harder-working pump motors on a 17mm shaft. High Heat Tolerance: The thicker section resists flex and sheds heat through long, hot run cycles. Deep Groove Construction: Carries the radial and thrust loads of a working pump shaft without complaint. Specifications Bore (Inner Diameter): 17mm. Outer Diameter: 47mm. Width: 14mm. Construction: Single-row deep groove ball bearing.