TimkenDouble Row Tapered Roller Bearing Assembly, TDO Configuration, Class 3 Precision, 2.500 in Bore x 4.4375 in Outside Diameter — Complete Set With Double Cup and Spacer

Product Description

Product identification

Timken 29585-90067, a complete TDO double-row tapered roller bearing assembly. TDO is Tapered Double Outer: two single-row cone assemblies running in one double cup, spacer-set.

Brand: Timken

Assembly Number: 29585-90067

Cone Part Number: 29585

Cup Part Number: 29526D

Spacer Part Number: R800008

Series: 29500 inch tapered roller series

Principal dimensions

Bore: 2.500 in (63.5 mm)

Outside Diameter: 4.4375 in

Cone Width: 1.0000 in

Design Units: Inch

Construction and precision

Bearing Type: Double-row tapered roller bearing, TDO — complete assembly

Arrangement / Configuration: TDO, spacer-set double cup

Precision Class: Class 3

Number Of Rows: 2

Rolling Elements: Tapered rollers, two rows, with cages

Bearing Material: Case-carburized steel

Mounting data

Cone Frontface Backing Diameter: 2.76 in

Cone Backface “To Clear” Radius: 0.14 in

Effective Center Location: -0.11 in

Mounting Arrangement: Double cup normally clamped in the housing

Performance in service

A TDO carries radial load, thrust in both directions and axial location of the shaft in one envelope. The two rows sit far enough apart to give genuine moment stiffness, which suits a short stiff shaft with no room for two spaced bearings and positions that resist overturning moments. The spacer width, ground to suit these particular cones and this cup, establishes the assembly’s internal end play. Class 3 is a tighter Timken precision grade than standard, holding bore, outside diameter and width to closer limits, and on a two-row assembly it also gives a more tightly controlled end-play setting, locating a shaft accurately rather than merely supporting it.

Application types

Short stiff shafts with no room for spaced bearings, positions resisting overturning moments, gearbox output shafts, and accurately located shaft positions.

Set composition

Unit Quantity: 1 complete assembly, comprising two 29585 cone assemblies (inner races with rollers and cages), one 29526D double cup carrying two raceways, and one R800008 spacer ring.

Related designations

29585 and 29526D are industry-standard inch tapered designations. A two-row unit is matched on the assembly number: 29585 also pairs with the single cups 29520 and 29522, producing single-row bearings from the same cone. Class 3 is a distinct precision grade from standard-precision builds of the same assembly number. Searchable forms: 29585-90067, 2958590067, 29585 90067, 29585/90067, 29585-29526D, 29585 29526DRB.

Origin and classification

Country of Origin: United States

Harmonization Code: 8482.20.00