Timken3875-90027Complete Double-Row Tapered Roller Bearing Assembly, 1-1/2 in Bore, 3-3/8 in Cup Outside Diameter, Two Cones, Two Cups and Both Spacers

Product Description

What this part is:

A Timken 3875-90027 complete double-row tapered roller bearing assembly in the inch series. Each assembly is built from two 3875 cones, two 3821 cups, one X1S-3875 cone spacer and one Y1S-3821 cup spacer.

Decoding the order code:

• 3875 — cone, comprising the inner ring, the rollers and the cage.
• 3821 — the mating cup, which is the outer race.
• X1S-3875 — cone spacer.
• Y1S-3821 — cup spacer.
• -90027 — Timken assembly number, marking a factory-matched complete set rather than a loose component.

Scope of supply:

Complete assembly. Both cones, both cups and both spacers are included.

What these specs mean in practice:

Tapered roller geometry carries heavy radial load together with thrust in one direction, and a two-row build takes thrust in both directions. The matched cone and cup spacers set the internal clearance of the pair at the factory, which is what makes a -90027 set repeatable from one assembly to the next.

Published dimensions:

• Cone bore: 1.5000 in (38.100 mm)
• Cup outside diameter: 3.3750 in (85.725 mm)
• Rows: 2
• Rolling elements: tapered steel rollers

Quantity and configuration:

1 complete assembly per unit, built as itemised above.

Interchange guidance:

Searchable forms are 3875-90027, 387590027, 3875 90027 and the component numbers 3875, 3821, X1S-3875 and Y1S-3821. Other Timken -90xxx numbers built on the same 3875 cone and 3821 cup use different spacer widths and set-up clearances, so they are related assemblies rather than interchanges.