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TimkenDX256794/DX591899Tapered Roller Bearing Cone and Cup Set, 4-1/2 in Bore x 8-3/8 in OD

Condition: New

Availability:

6 in stock

Single-row tapered roller bearing cone and cup set, 4-1/2 in bore, 8-3/8 in OD. Case-carburised alloy steel races, steel cage, inch series.

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List Price

$757.33

6 in stock

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6 in stock

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Specifications

Key Specifications

MFR / BrandTimken
MPNDX256794/DX591899
ModelDX-256794 DX-591899
Bearing TypeTapered Roller Bearing Cone and Cup Set

Technical Specifications

ConditionNew
Base NumberDX256794
Industry TermsTaper roller bearing; cone and cup set; tapered roller cone; tapered roller cup
Common MisspellingsDX256794 DX591899; Timkin DX256794; taper rolller bearing
Bore Shaft Size4-1/2 in (114.30 mm)
Mpn VariantsDX256794/DX591899; DX-256794 DX-591899; DX256794; DX591899; DX 256794; DX 591899
Manufacturer StatusEngineered-to-order Timken part number
Arrangement ConfigurationSingle row, cone plus mating cup
Cage MaterialSteel
Number Of Rows1
Harmonization Code8482.20.0000
Design UnitsInch
Bearing MaterialCase-carburised alloy steel
Part NumberDX256794/DX591899

Cross-References

Cross Reference 1DX256794 (cone half of this set)
Cross Reference 2DX591899 (cup half of this set)
Seller Part Number: B-BA7#KE7GF3

Product Description

What this part is

A Timken single-row tapered roller bearing supplied as a matched cone and cup. The cone is the inner race with its roller and cage assembly; the cup is the separate outer race. Bore is 4-1/2 in (114.30 mm) and cup outside diameter is 8-3/8 in (212.73 mm).

Decoding the designation

Timken’s DX prefix marks an engineered-to-order part number rather than a standard catalogue series. DX256794 is the cone and DX591899 is the mating cup. The two numbers are quoted together because the raceway angle and roller path are matched between the halves.

What these specs mean in practice

Tapered roller geometry carries heavy radial load together with thrust in one direction. Races and rollers are case-carburised alloy steel, giving a tough core under a hardened working surface, which suits shock loading and contaminated service better than a through-hardened bearing.

Quantity and configuration

One cone and one matching cup per unit. Single row, one direction of thrust.

Fitting notes

Tapered roller bearings are set at assembly rather than supplied with a fixed internal clearance. Endplay or preload is established against the mating cup during mounting, most often by shim, spacer or adjusting nut.

Interchange guidance

Cone DX256794 pairs with cup DX591899. Both numbers are Timken-specific engineered designations with no standard-series equivalent.

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