Timken29585-90067Two-Row TDO Tapered Roller Bearing Assembly, 2.5000 in Bore, 4.4375 in Outside Diameter, Class 3, Two Cones with Double Cup and Cone Spacer

Product Description

What this part is

A complete Timken two-row TDO tapered roller bearing assembly in the imperial 29500 series, supplied as four matched pieces: two 29585 cones, one 29526D double cup and one X1S-29586 cone spacer. Bore 2.5000 in, outside diameter 4.4375 in, case-carburized steel, stamped steel cages, Class 3 precision.

Decoding the order code

29585 is the cone identity and 29526 the cup identity. The -90067 suffix is Timken’s assembly number: it identifies a specific pre-matched build of cones, cup and spacer rather than any single component. The D on the cup marks a double cup, one ring holding two opposed raceways, and X1S is Timken’s cone spacer prefix. TDO describes the geometry, two rows with a double outer ring and raceways facing outward.

What these specs mean in practice

The ground cone spacer and the one-piece double cup fix the internal setting at manufacture, so the assembly delivers a repeatable end play or preload without adjustment on the bench. Spreading the two rows apart gives thrust capacity in both directions and resistance to moment loading, which is what suits this construction to roll necks, wheel hubs and overhung pinion positions. Class 3 tightens bore, outside diameter and runout tolerances over standard stock.

Quantity and configuration

4 Pcs, forming one complete two-row assembly: two cones, one double cup, one cone spacer.

Fitting notes

The double cup seats in the housing bore and the two cones press onto the shaft with the spacer trapped between their frontfaces. Clamping is taken on the outboard cone backface by the shaft nut or end plate, and the setting comes from the ground spacer length rather than from shimming. The 0.14 in cone backface to-clear radius governs the maximum shaft shoulder fillet.

Interchange guidance

The 29585 cone and 29526 cup identities are carried across the tapered roller industry at the same envelope. A single cone against a single cup in the same series is a one-row arrangement and a different product. The spacer sets the internal clearance of this build, so it is matched to this assembly number and a spacer from another assembly changes the setting.