Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
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Single-row inch-series tapered roller bearing cone only: the inner ring complete with its roller and cage assembly, straight cylindrical bore. No cup included.
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$107.04
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Here are some other options that might fit your project — cross-referenced equivalents and similar parts we have in stock and ready to ship. Need help choosing? Call 585-295-7880.
Single-Row Imperial Tapered Roller Bearing Cone – 3 in Bore, 1.172 in Width, K Factor 1.31$40.79
Tapered Roller Bearing Cone – 3.7500 in Bore, 1.4219 in Width, 223,000 N Dynamic Rating$53.09
Tapered Roller Bearing Cone – 2.6250 in Bore, 1.4375 in Width, 229,000 N Dynamic Rating$59.49
Tapered Roller Bearing Cone Assembly, 5.750 in Bore x 1.125 in Wide, Class 3 Precision, Cone Only$61.54| MFR / Brand | Timken |
|---|---|
| Model | 5784 T |
| Bearing Type | Tapered Roller Bearing Cone |
| Base Number | 5784 |
|---|---|
| Industry Terms | cone only, inner ring assembly, taper roller cone, tapered roller inner race, obsolete Timken cone, NOS bearing, legacy inch series taper bearing, discontinued bearing cone |
| Common Misspellings | Timkin, Timpken, 5784-T cone, 5784 T, 5787T, 5874T, taper roler cone |
| Bore Shaft Size | Not published by the manufacturer for this legacy designation — contact us for a measurement of the actual ring |
| Mpn Variants | 5784T, 5784-T, 5784 T, 5784, 5784T CONE, 5784-T CONE |
| Manufacturer Status | Obsolete — no current Timken catalogue entry for 5784 or 5784T on either catalogue path; New Old Stock only |
| Arrangement Configuration | Cone only — no cup (outer ring) included; straight cylindrical bore, not a taper bore |
| Additional Attributes | Bore diameter, inner ring width, load ratings, K factor and mating cup number are NOT published by Timken for this designation and are deliberately omitted rather than estimated. Verified from ring and carton only: designation 5784T, single-row cone, straight cylindrical bore, Made in USA. Carton printed THE TIMKEN ROLLER BEARING COMPANY, CANTON OHIO USA — a corporate name retired in 1970, dating the stock. |
| Number Of Rows | 1 |
| Design Units | Inch |
| Part Number | 5784T |
| Cross Reference 1 | 5784-T CONE (carton designation as printed) |
|---|---|
| Cross Reference 2 | 5735 (industry-quoted mating cup — UNVERIFIED, confirm before ordering) |
| Cross Reference 3 | 5784 (base number without T suffix) |
| Cross Reference 4 | MARCA REGISTRADA (carton marking) |
This is a cone only: the tapered inner ring with its roller and cage assembly. The cup, the separate outer ring the rollers actually run against, is not included. A tapered roller bearing is only a bearing when you have both halves. This part mounts on a shaft, not in a housing bore.
Buy it if your existing cup is installed and in good condition and you need the rotating half. If you need a complete bearing, contact Central Surplus about the mating cup before you order.
A New Old Stock inch-series Timken tapered roller cone marked 5784T. The ring is stamped 5784T / TIMKEN / MADE IN USA. It arrives in its original carton, printed THE TIMKEN ROLLER BEARING COMPANY, CANTON · OHIO · U.S.A. and labelled 5784-T CONE / MARCA REGISTRADA — a corporate name Timken retired in 1970, which dates this as genuinely old stock rather than recent production in a vintage box.
The bore is plain straight cylindrical, with no taper and no keyway. Single row, cone only.
Bearings outlive catalogues. A machine built in the 1950s or 1960s may still be running, and the cone that fits it may have been dropped from the current range decades ago even though the machine has not changed. Obsolete inch-series numbers like this one are exactly what maintenance departments cannot buy new, which is why New Old Stock in the original carton has real value: it is dimensionally the part the machine was designed around, not a modern approximation that requires reworking a shaft.
Written variously as 5784T, 5784-T, 5784 T and 5784. Carton designation is 5784-T CONE. Related current-catalogue numbers in the adjacent range are 5578, 5584 and 575, none of which are stated interchanges — they are listed here only as search context. An industry-quoted mating cup of 5735 circulates; confirm before relying on it.
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If you pulled a bearing off general industrial equipment at random, there’s a good chance
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