Timken97900Tapered Roller Bearing Single Cup 9.000 in OD x 1.500 in Wide, Matches 97500 Cone

Product Description

What this part is:

Timken 97900, a single cup for an imperial tapered roller bearing. The cup is the outer race: one tapered raceway, no rollers and no cage. Outside diameter 9.0000 in (228.60 mm), cup width 1.5000 in (38.10 mm).

Decoding the designation:

• 97900 – Timken single-cup part number in the imperial 979xx cup range
• 97500 – the cone that runs against it, giving the 97500/97900 TS assembly
• TS – tapered single, the assembly class this cup belongs to

What these specs mean in practice:

A tapered roller bearing carries radial load and thrust in one direction through the contact angle between cone, rollers and cup. Cone and cup are separable and are matched as a pair, so raceway angle and roller path are common to the two halves of a published pairing. In the mounted 97500/97900 assembly the shaft bore is 5.0000 in, the housing bore is 9.0000 in and the assembled width is 2.1250 in.

Published specifications:

• Outside diameter: 9.0000 in (228.60 mm)
• Cup width: 1.5000 in (38.10 mm)
• Component: cup, outer race
• Matching cone: Timken 97500
• Assembly bore: 5.0000 in (127.00 mm)
• Assembly width: 2.1250 in (53.975 mm)
• Assembly class: TS, tapered single
• Design units: imperial

Quantity and configuration:

1 Pc. Cup only. The matching cone is the Timken 97500.

Fitting notes:

The cup presses into the housing bore square to its seat, with the small end of the taper facing the cone. Bearing setting — end play or preload — is made up on assembly against the cone, so the cup seat depth and the shim or nut arrangement on the shaft together set the running condition.

Interchange guidance:

The 97900 cup number is used across brands for the same envelope: SKF 97900, Koyo 97900, NTN 97900, Bower 97900. Load ratings published for the complete 97500/97900 assembly do not apply to a cup on its own.