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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
15 in stock
Tapered roller bearing single cone, 2.2500 in (57.150 mm) bore, 0.8661 in (22.00 mm) cone width, Class 3 precision. 1 Pc, cone only.
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$125.89
15 in stock
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| MFR / Brand | Timken |
|---|---|
| MPN | 390-3 |
| Model | 390 3 |
| Bearing Type | Tapered Roller Bearing Cone |
| ID | 2.2500 in |
| Series | 395 |
|---|---|
| Base Number | 390 |
| Industry Terms | taper roller cone, tapered roller inner race, TS cone, single cone |
| Common Misspellings | Timkin 390, Timpken 390, taper rollar bearing cone |
| Application Types | Gearboxes, pump shafts, industrial machinery, wheel and axle assemblies |
| Bore Shaft Size | 2.2500 in (57.150 mm) |
| Mpn Variants | 390-3, 390*3, 390 3, 3903, 390 |
| Compatible With Replaces | Mates with Timken 394A cup; assembled set 390/394A |
| Number Of Rows | 1 |
| Harmonization Code | 8482.20.00 |
| Part Number | 390-3 |
| Cone Part Number | 390 |
| Cone Width | 0.8660 in |
| Cone Backface To Clear Radius | 0.09 in |
A Timken 390 single cone — the inner race with its tapered roller and cage assembly — from the imperial TS single-row tapered roller bearing range. Cone only. The matching cup is the Timken 394A.
The base number 390 identifies the cone within Timken’s imperial single-cone series. The trailing -3, written on this listing also as *3, is Timken’s precision Class 3 designation, a tightened bore, runout and width tolerance grade above standard Class 4 product.
Cone bore: 2.2500 in (57.150 mm)
Cone width: 0.8661 in (22.00 mm)
Assembled 390/394A: 2.2500 in bore × 4.3307 in OD × 0.8661 in width (57.150 × 110.000 × 22.00 mm)
Mating cup 394A width: 0.7411 in (18.82 mm)
Weight: 1.587 lb (0.72 kg)
Material: through-hardened bearing steel
A tapered roller geometry carries combined radial and axial load in one direction, with thrust capacity rising as the cup angle steepens. Class 3 precision tightens bore and raceway runout relative to standard-class product, which reduces shaft-mounted eccentricity and gives more even roller loading in gearbox and pump-shaft positions. The assembled 390/394A width of 0.8661 in equals the cone width, so the cup sits within the cone envelope in the mounted set.
1 Pc. Single cone, set to clearance or preload on assembly against its cup.
390 is the base cone number; 390-3 and 390*3 are the same part written two ways. The 390A is a related size with a different bore and is a separate part number.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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