Timken36920Taper Roller Bearing Single Cup 8-15/16″ OD 29/32″ Wide

Product Description

What this part is:

A Timken 36920 single cup — the outer race of an imperial TS single-row tapered roller bearing. Cup only. The matching cone is the Timken 36990.

Decoding the designation:

In Timken’s imperial scheme the 369xx block pairs cone 36990 with cup 36920 as the assembled 36990/36920 bearing. A plain 36920 is the single cup; the 36920CD variant is a double cup of the same OD but 2.6249 in assembled width, a separate part number. 476-9142 is Caterpillar’s own part number for this cup.

Published dimensions:

• Cup outside diameter: 8.9375 in (227.01 mm)
• Cup width (C): 0.9063 in (23.02 mm)
• Assembled 36990/36920 bore (d): 7.0000 in (177.80 mm)
• Assembled width (T): 1.1875 in (30.16 mm)
• Mating cone 36990 width (B): 1.1875 in (30.16 mm)
• Rollers per row: 50
• Material: through-hardened bearing steel

What these specs mean in practice:

The cup carries the outer tapered raceway, and its raceway angle together with the cone geometry sets the thrust-to-radial split the assembled bearing handles. A shallow section of 0.9063 in on a 8.9375 in outside diameter places this in the large-bore, moderate-section range typical of heavy off-highway wheel ends, planetary carriers and pivot positions. The cup is the half that presses into the housing bore, so the housing fit and the 8.9375 in OD are the dimensions that govern installation.

Quantity and configuration:

1 Pc. Single cup, no rollers and no inner race.

Interchange guidance:

Caterpillar 476-9142 is the same cup under Caterpillar’s numbering. The 36920CD is a related size — same 8.9375 in outside diameter, double-cup construction — and is a different part.