Is the Enduro 6803 LLB the Right Bearing for Your Application?

The Enduro 6803 LLB Radial Bearing is a standard design cartridge bearing built to ABEC-3 tolerance standards with C3 internal clearance for the 17mm x 26mm x 5mm profile. The LLB seal is a lighter-contact design compared to the heavier LLU seal, reducing drag while still providing effective protection against dust and light moisture ingress. Mobilux NGLI 2 synthetic grease fills 90% of the bearing interior for consistent lubrication across the bearing's service life.

C3 clearance means slightly more internal play than a standard CN clearance bearing, which is specified in applications where press-fit compression or thermal expansion would otherwise reduce bearing clearance to a tight or binding fit. The 17mm x 26mm x 5mm form factor appears in hub flanges, headset cups, and select suspension pivot applications on road, gravel, and mountain bikes. For mechanics who need the specific combination of LLB sealing and C3 clearance in this size, the Enduro 6803 LLB is the correct bearing to order.