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Availability:
3 in stock
Tapered roller bearing cone, 1-9/16 in. bore, 1.1965 in. inner ring width. Sold as 1 Pc.
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$25.64
3 in stock
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| MFR / Brand | Bower |
|---|---|
| MPN | 3386 |
| Model | 3386 |
| Bearing Type | Tapered Roller Bearing Cone |
| Condition | New – Open box |
|---|---|
| Base Number | 3386 |
| Industry Terms | taper bearing cone; tapered roller cone; TS single-row tapered roller bearing; inner race with rollers; inch series taper bearing |
| Common Misspellings | 3386 tapper bearing cone; taperred roller cone; 3386 taper roler cone; Bowers 3386; Bauer 3386 |
| Condition Note | Made In USA, New Old Stock, We Have The Parts To Make Complete Sets Or Assemblies For Any Part Number, Contact Us |
| Bore Shaft Size | 1-9/16 in. (39.688 mm) |
| Mpn Variants | 3386; 3386 Cone; 3386/3320 |
| Compatible With Replaces | Timken 3320 cup (primary pairing); Timken 3321 cup (alternative published pairing) |
| Arrangement Configuration | Cone only; separate cup required |
| Dynamic Load Rating C1 | 25,800 lbf (115,000 N) for the matched 3386/3320 cone-and-cup assembly |
| Additional Attributes | K factor 2.14; effective centre location 0.43 in. inside the cone backface; G1 34.6; G2 12.1; geometry factor Cg 0.0744 |
| Item Weight | 2.1 lb (0.9 kg) |
| Number Of Rows | 1 |
| Design Units | Imperial (inch) |
| Bearing Material | Through-hardened bearing steel |
| Part Number | 3386 |
| Cross Reference 1 | Timken 3386 |
|---|---|
| Cross Reference 2 | BCA 3386 |
| Cross Reference 3 | Koyo 3386 |
| Cross Reference 4 | NTN 3386 |
A single-row imperial tapered roller bearing cone in the ISO/ANSI 3386 size — the inner ring together with its tapered rollers and cage. It forms the shaft-side half of a two-piece TS single-row tapered bearing. Cone only. The matching cup is the Timken 3320, with the 3321 as the second published pairing.
3386 is an inch-series number under the ANSI/ABMA interchange scheme rather than a metric ISO designation, so the digits define the cone geometry independently of brand. Bower is a legacy United States bearing brand whose inch-series numbering follows the same scheme. Tapered roller bearings carry no internal-clearance suffix because clearance is established at assembly rather than built into the part.
The K factor of 2.14 is high for this size band, meaning a shallow cup angle: the 3386/3320 pairing is weighted toward radial capacity and carries a smaller proportion of thrust than a low-K bearing on the same envelope. The effective centre sits 0.43 in. inside the cone backface, which is the load-line reference for calculating effective bearing spread in an opposed two-row mounting.
Bore (d): 1-9/16 in. (39.688 mm)
Inner ring width (B): 1.1965 in. (30.391 mm)
Dynamic radial rating C1, matched 3386/3320 assembly: 25,800 lbf (115,000 N)
Dynamic radial rating C90, matched 3386/3320 assembly: 6,700 lbf (29,800 N)
Dynamic thrust rating Ca90, matched assembly: 3,130 lbf (13,900 N)
Static radial rating C0, matched assembly: 29,100 lbf (129,000 N)
K factor: 2.14
Maximum shaft fillet radius: 0.03 in. (0.800 mm)
Shaft backing shoulder diameter: 1.79 in. frontface, 1.83 in. backface
Cone weight: 2.1 lb (0.9 kg)
One cone assembly, sold individually. Single row, tapered rollers, steel cage.
The cone takes an interference fit on the shaft and is driven from the backface onto the shoulder, with the load path through the inner ring rather than the cage. The tight 0.03 in. maximum shaft fillet radius means the shaft corner needs to be small or relieved for the backface to seat square. Endplay or preload is set after the cup is in its housing bore.
3386 interchanges directly across Timken, Bower, BCA, Koyo, NTN and SKF because the inch-series number defines the geometry. The 3382 and 3387 are related sizes in the same number block with different inner ring dimensions and are separate parts.
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