Enduro 6803 ABEC3 Bearing 17x26x5 (Single)

##Enduro ABEC3 6803 Wheel Bearing 17x26x5 (Single) One of the most common bearings for front or rear hubs; the Enduro ABEC3 6803 Wheel Bearing 17x26x5 (Single) is labyrinth sealed with two NBR 70 full-contact; medium-high friction seals; which ride in a groove machined into the bearing. Combined with marine grease; this seal creates an almost impenetrable barrier to contamination. High precision; Grade 10 chromium steel balls are within 10/1;000;000? round; twice as round as the industry standard. These precision balls ride in a 52100 high carbon chromium alloy race; hardened to R-62 to make them extremely tough and durable. Mirror finish polishing of the races creates ABEC-3 precision and noiseless movement. When replacing a bearing; measure the inner diameter (ID); outer diameter (OD); and width (W) to determine compatibility.