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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Tapered roller bearing single cone for a 2.0000 in shaft, 1.28125 in inner ring width, K factor 0.66. NA prefix marks the wider two-row cone. Cone only, no cup.
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| MFR / Brand | Timken |
|---|---|
| MPN | NA55200 |
| Model | NA 55200 |
| Bearing Type | Tapered Roller Bearing Cone, Open |
| ID | 2.0000 in |
| Width | 1.28125 in (32.544 mm) |
| Series | 55000 |
|---|---|
| Material | Case Carburized Steel |
| Base Number | 55200 |
| Industry Terms | taper roller cone, TS cone, inner ring assembly, cone and rollers, taper bearing inner, imperial taper cone |
| Common Misspellings | NA5520, N55200, NA-55-200, NA55200A, 55-200 |
| Application Types | Wheel ends, gearboxes, pinion shafts, heavy machinery, industrial drives |
| Bore Shaft Size | 2.0000 in (50.8 mm) |
| Mpn Variants | NA55200, NA-55200, NA 55200, NA55200 Timken, 55200 (base number) |
| Manufacturer Status | Timken standard catalogue item |
| Compatible With Replaces | Timken TS single-row and TNA two-row tapered roller assemblies built on the 55200 cone |
| Additional Attributes | Ca90 9,380 lbf; e factor 0.88; K factor 0.66; effective centre 0.28 in; max shaft fillet radius 0.09 in; backing shoulder dia 2.72 in |
| Cage Type | Stamped steel |
| Dynamic Load Rating | 6,200 lbf (C90) |
| Rolling Elements | Tapered Rollers |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Harmonization Code | 8482.20.00 |
| Part Number | NA55200 |
| Cross Reference 1 | Timken 55444D - double cup |
|---|
A Timken NA55200 tapered roller bearing single cone: the inner ring complete with its tapered rollers and stamped steel cage. Cone only; the mating cup (outer race) is a separate part number.
55200 — base cone number in Timken’s imperial 55000 series.
NA — prefix for a cone ground to the wider inner-ring width used in two-row (TNA) arrangements. Inner ring width is 1.28125 in, against 1.0594 in for a plain 55200.
Bearing Type: Tapered roller bearing cone. Rolling Elements: Tapered rollers. Number Of Rows: 1. Bore Type: Straight. Cage Type: Stamped steel. Material: Case carburized steel. Seal Type: Open. Series: Imperial 55000. Dynamic radial rating C90 (90 million revs): 6,200 lbf / 27,600 N. Dynamic axial rating Ca90: 9,380 lbf / 41,700 N. e factor: 0.88. K factor: 0.66. Unit Quantity: 1 Pc.
Bore Diameter (d): 2.0000 in / 50.8 mm. Inner ring width (B): 1.28125 in / 32.544 mm. Effective centre location: 0.28 in / 7.1 mm. Maximum shaft fillet radius: 0.09 in / 2.300 mm. Shaft backing shoulder diameter (db): 2.72 in / 69 mm.
Timken double cup 55444D belongs with this cone; single cups in the family include 55437 and 55443. A plain 55200 cone is 1.0594 in wide and is a different width. MPN Variants: NA55200, NA-55200, NA 55200, 55200 (base number).
2.0000 in (50.8 mm), with a 1.28125 in (32.544 mm) inner ring width.
A cone ground to the wider inner-ring width used in two-row (TNA) arrangements, against the single-row 55200 width of 1.0594 in.
Timken’s related double cup for this cone is the 55444D. Single cups in the family include 55437 and 55443.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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