# Sealed Double-Row Hub Duty and the DAC40800044 Size

Double-row hub cartridges combine radial and axial capacity in one pre-greased unit. DAC40800044 follows that pattern in a 40 × 80 × 44 mm envelope, with seals intended to keep out road grit and splash.

Because the unit is non-aligning, the knuckle bore must be round and undamaged. If a previous failure scored the housing, repair the bore rather than forcing a new cartridge. Note whether the axle is front or rear and whether a tone ring is required.

The DAC40800044 bearing listing from TFL Bearing holds the size, material, and packing options. Shandong TFL Bearing Co., Ltd can discuss OEM laser marking if the part is going into a branded aftermarket box.