SKF 6304 Bearing

SKF 6304 Bearing - Big shaft, big load, big bearing. Pull apart a larger pool or spa pump motor and the drive end often hides a 6304. It's the heavy 20mm-bore bearing — 52mm outer, 15mm wide — built to take the punishment the impeller end dishes out. The deep, thick races carry serious thrust without flexing, which is exactly what a high-output motor needs where the shaft works hardest. A worn one here turns into a low grumble that gets louder by the week. Swap it before the noise becomes a seized motor, and match the number on the old bearing first — the 63-series sizes are easy to confuse. Features Heavy Drive-End Bearing: The thick 63-series body built for the impeller end of larger pool and spa pump motors. High Thrust Capacity: Deep races soak up the load a working impeller pushes back down a 20mm shaft. Built to Last: Resists the flex and heat that wear an under-spec bearing out before its time. Specifications Bore (Inner Diameter): 20mm. Outer Diameter: 52mm. Width: 15mm. Construction: Single-row deep groove ball bearing.