Timken47681/47620Single-Row Tapered Roller Bearing Set 3-3/16 in Bore, 5-1/4 in Outside Diameter, Cone and Cup Supplied Together

Product Description

What this part is

A Timken 47681/47620 single-row tapered roller bearing set, 3-3/16 in bore by 5-1/4 in outside diameter. Both halves are supplied: the 47681 cone and the 47620 cup. Timken also catalogues this pairing as the assembly number 47681-90017.

Decoding the designation

The 47681 number is the cone and the 47620 the cup, written as a pair in the usual cone/cup convention. A Timken -90xxx number denotes a complete assembly, so 47681-90017 is the assembly designation for this cone and cup supplied together as a single-row bearing.

What these specs mean in practice

Buying cone and cup as a catalogued pair means the raceway angle and roller path are matched between the two halves, which is what a tapered roller bearing depends on. A single row carries radial load and thrust in one direction, so it is usually mounted against a second bearing that takes the reverse thrust.

Quantity and configuration

One set: one cone and one cup, single row.

Fitting notes

The cup is pressed into the housing bore on the cup face and seated square against its shoulder; the cone is an interference fit on the shaft, pressed on the inner ring face only. Running clearance or preload is then set at the shaft on assembly.

Interchange guidance

The component numbers are the Timken 47681 cone and the Timken 47620 cup, and the pairing is catalogued as 47681-90017. A 47681 cone against a cup outside this published pairing is a different bearing, since the raceway angle is matched between the two halves.