Timken46721DDouble Cup – 8.8750 in Outside Diameter, 3.0000 in Width, Case-Carburized Steel

Product Description

What this part is

Timken 46721D double tapered cup for inch-series tapered roller bearings. Outside Diameter: 8.8750 in (225.425 mm). Overall Width: 3.0000 in (76.2 mm). Series: 46700. Base Number: 46721. Bearing Material: Case-carburized steel. Rolling Elements: Tapered Roller. Number Of Rows: 2. Item Weight: 9.713 kg (21.41 lb). Design Units: Imperial. GTIN: 053893299853.

Decoding the designation

46721 — Timken inch cup number in the 46700 series, fixing the raceway angle and the 8.8750 in outside diameter.

D — double cup. One outer ring carries two opposed raceways and seats two cones.

What these specs mean in practice

e Factor: 0.38. K Factor: 1.52. Y1 Factor: 1.76. Y2 Factor: 2.62. Geometry Factor (Cg): 0.143. These are Timken’s own calculation factors for equivalent load and for the lubrication life adjustment on this raceway geometry.

A one-piece double outer ring sets both raceways in a single housing bore and holds the two rows on a common axis. The resulting wide effective bearing spread is what carries overturning moment, which is why this configuration suits shafts loaded well off centre.

Mounting data

Max Housing Fillet Radius: 0.03 in (0.8 mm) — the largest housing corner radius the cup corner clears. Housing Backing Shoulder Diameter (Da): 8.62 in (217.93 mm). The cup can run fixed in the housing bore or float axially in it.

Quantity and configuration

Unit Quantity: 1 Pc. One double cup, a single outer ring with two raceways.

Interchange guidance

The 46721D seats two 46792 cones. Timken designates that two-row assembly 46792/46721D. Searchable variants of this number: 46721D, 46721-D, 46721 D.