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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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$757.33
6 in stock

6 in stock
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| MFR / Brand | Timken |
|---|---|
| MPN | DX256794/DX591899 |
| Model | DX-256794 DX-591899 |
| Bearing Type | Tapered Roller Bearing Cone and Cup Set |
| Condition | New |
|---|---|
| Base Number | DX256794 |
| Industry Terms | Taper roller bearing; cone and cup set; tapered roller cone; tapered roller cup |
| Common Misspellings | DX256794 DX591899; Timkin DX256794; taper rolller bearing |
| Bore Shaft Size | 4-1/2 in (114.30 mm) |
| Mpn Variants | DX256794/DX591899; DX-256794 DX-591899; DX256794; DX591899; DX 256794; DX 591899 |
| Manufacturer Status | Engineered-to-order Timken part number |
| Arrangement Configuration | Single row, cone plus mating cup |
| Cage Material | Steel |
| Number Of Rows | 1 |
| Harmonization Code | 8482.20.0000 |
| Design Units | Inch |
| Bearing Material | Case-carburised alloy steel |
| Part Number | DX256794/DX591899 |
| Cross Reference 1 | DX256794 (cone half of this set) |
|---|---|
| Cross Reference 2 | DX591899 (cup half of this set) |
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).
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.
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.
One cone and one matching cup per unit. Single row, one direction of thrust.
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.
Cone DX256794 pairs with cup DX591899. Both numbers are Timken-specific engineered designations with no standard-series equivalent.
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