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Timken41286BTapered Roller Bearing Cup, Single Flanged (TSF) – 2.8593 in Cup Outer Diameter, 0.6875 in Cup Width, 3.0741 in Flange Outer Diameter, Class 2, Case-Carburized Steel

Condition: New

Availability:

40 in stock

Single flanged tapered roller bearing cup, 2.8593 in OD, 0.6875 in width, 3.0741 in flange OD. Case-carburized steel, standard Class 2 tolerance.

List Price

$65.94

40 in stock

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Specifications

Key Specifications

MFR / BrandTimken
MPN41286B
Model41286 B
Bearing TypeTapered Roller Bearing Cup (Single Flanged, TSF)
OD2.8593 in (72.626 mm)

Technical Specifications

ConditionNew
Series41000
Base Number41286
Industry TermsFlanged taper cup, TSF cup, tapered roller bearing outer race, taper bearing race, flange cup
Overall Width0.6875 in (17.463 mm)
Flange Outer Diameter3.0741 in (78.082 mm)
Cup Flange Width0.2187 in (5.555 mm)
Mpn Variants41286B, 41286-B, 41286 B, 41286B USA
Manufacturer StatusActive catalogue part
Compatible With ReplacesMating cones: Timken 41125 (1.1250 in bore), 41126, 41106 (1.0625 in bore), 41100 (1.0000 in bore)
MaterialCase-Carburized Steel
Rolling ElementsNot applicable (cup only; rollers are carried on the mating cone)
Number Of Rows1
Harmonization Code8482.20.00
Cup Part Number41286B
Cup Width0.6875 in (17.463 mm)
Cup Backface To Clear Radius0.06 in (1.5 mm)
Cup Frontface Backing Diameter2.80 in (71.10 mm)
Seller Part Number: BAY3#OCUSDN

Product Description

What this part is

A Timken 41286B single flanged tapered roller bearing cup — the outer race of a TSF (tapered single with flange) inch-series tapered roller bearing. Cup only. The matching cone is the Timken 41125.

Decoding the designation

41286 is the 41000-series cup number, and the trailing B marks the flanged execution. The raceway outside diameter of 2.8593 in and the cup width of 0.6875 in are shared with the unflanged 41286; the B adds an integral 3.0741 in flange, 0.2187 in thick, at the cup backface. Both executions accept the same cones.

What these specs mean in practice

The flange seats against the housing face, so a through-bored housing locates the cup axially without a machined shoulder or a retaining ring, and the flange face provides a square reference for aligning a seal. Cup outside diameter is held to +0.001 in / 0 and cup width to +0.002 in / –0.010 in at Class 2 tolerance.

Mounting and abutment data

Cup frontface backing diameter is 2.80 in (71.10 mm) and the cup backface to-clear fillet radius is 0.06 in (1.5 mm). Run against a 41125 cone the pairing carries an ISO e factor of 0.6, a Y factor of 1, a Timken K factor of 0.97 and an effective load centre 0.16 in (4.1 mm) inside the cone backface, with a cone frontface backing diameter of 1.44 in and a cone backface backing diameter of 1.89 in.

Quantity and configuration

One flanged cup per unit. Tapered single bearings in this series are normally mounted in opposing pairs on a shaft, one cone and one cup at each end.

Interchange guidance

The 41286B cup pairs with the 41125, 41126, 41106 and 41100 cones of the same series, each giving a different bore. The unflanged 41286 is a related size with identical raceway geometry and a plain outside diameter in place of the locating flange.

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