Timken48328-3Tapered Roller Bearing Single Cup – 8 in Outside Diameter, 1.3125 in Width, Case-Carburized Steel

Product Description

What this part is

Brand: Timken. Manufacturer part number: 48328. Product type: tapered roller bearing single cup. A cup is the outer ring of a tapered roller bearing. Series: 48300. Design units: imperial. Cup only. Mating cones: Timken 48393 and Timken 48393A.

Dimensions

Outside diameter, D: 8 in (203.2 mm). Outer ring width, C: 1.3125 in (33.338 mm). Weight: 9.7 lb (4.4 kg).

Bearing factors

e factor: 0.32. Y factor: 1.87. Geometry factor, Cg: 0.121.

Fitting notes

Maximum housing fillet radius: 0.130 in (3.30 mm). Housing backing shoulder diameter, frontface, Da: 7.36 in (186.90 mm). Housing backing shoulder diameter, backface, Db: 7.17 in (182.12 mm). Material: case-carburized alloy steel with a ground raceway. The cup seats in the housing bore and the cone assembly runs against it.

What these specs mean in practice

A single cup carries one raceway and takes one cone. The e and Y factors set the load-zone calculation for the mounted bearing: e 0.32 is the thrust-to-radial ratio at which the thrust term enters the equivalent load, and Y 1.87 is the thrust factor above it.

Quantity and configuration

Unit quantity: 1 Pc. Cup only. Mating cones: Timken 48393 and Timken 48393A.

Interchange guidance

Timken 48320 is the other published cup for a 48393 cone and is a related size. Timken 48385 is a further cone listed against this cup. Searchable forms of this designation: 48328, 48328-3, 48328 *3, 48328#3, 48328 3.