Timken38556Tapered Roller Bearing Cone 5-9/16 in Bore Inch Series Cone Only

Product Description

What this part is:

A Timken 38556 tapered roller bearing cone in the inch series. Bore 5-9/16 in (141.29 mm). The cone comprises the inner ring with its roller and cage assembly.

Component scope:

Cone only.

What these specs mean in practice:

A tapered roller bearing splits into two separately ordered halves: the cone, which is the inner ring with rollers and cage, and the cup, which is the outer race. The raceway angle and roller path are matched between a specific cone and its published cup, so the pairing is part of the specification rather than a preference. Tapered rollers carry combined radial and axial load in one direction, and a second bearing set facing the other way carries thrust the other direction.

Published specifications:

Bore: 5-9/16 in (141.29 mm). Component: cone, inner ring with roller and cage assembly. Series: inch. Rolling Elements: tapered rollers. Bore Type: straight. Cage Type: stamped steel. Bearing Material: case-hardened steel. Cone Width: 1.1563 in. Cone Frontface Backing Diameter: 5.94 in. Cone Backface “To Clear” Radius: 0.14 in. Bearing Class: Class 2.

Quantity and configuration:

1 Pc. Cone only.

Fitting notes:

The cone is a press fit on the shaft journal, seated square against the shaft shoulder. Setting is established after both cone and cup are in place, by adjusting the axial position of one race to the specified end play or preload.

Interchange guidance:

Tapered cones are matched to a published cup by raceway angle and roller path, so the cone number alone identifies the part; the cup half is specified separately. A Timken Class 3 variant of the same number, written 38556-3, 38556*3 or 38556#3, is a tighter precision class and a related part rather than a direct interchange.