NP118297/NP422278TimkenTapered Roller
NP118297/NP422278 is a Timken tapered roller bearing, bore 45.24 mm, O.D. 73.43 mm, height 42.67 mm. Dimensions, drawing, interchanges and price.
Original catalogue drawing - Timken TRB Catalog, page 726
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
| Symbol | Dimension | mm | inch |
|---|---|---|---|
| d | Bore diameter | 45.242 | 1.7812 |
| D | Outside diameter | 73.431 | 2.891 |
| T | Overall assembly width | 42.672 | 1.68 |
| C | Cup / outer-ring width | 35.052 | 1.38 |
Notes
Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
| Bore d (mm) | 45.242 |
|---|---|
| Bore d (in) | 1.7812 |
| Outside dia. D (mm) | 73.431 |
| Outside dia. D (in) | 2.8910 |
| Overall width T (mm) | 42.672 |
| Overall width T (in) | 1.6800 |
| Cup width C (mm) | 35.052 |
| Cup width C (in) | 1.3800 |
Load ratings & speeds
| Basic dynamic load rating Cr (lbs) | 28500 |
|---|---|
| Basic dynamic load rating Cr (N) | 127000 |
| Dynamic rating C1 (N, ISO) | 127000 |
| Dynamic rating C1 (lbf, ISO) | 28500 |
| Radial rating C90 (N) | 18900 |
| Radial rating C90 (lbf) | 4250 |
| Thrust rating Ca90 (N) | 9870 |
| Thrust rating Ca90 (lbf) | 2220 |
| Factor e | 0.31 |
| Factor Y1 | 2.21 |
| Factor Y2 | 3.29 |
| Factor K | 1.91 |
Mounting dimensions (fillets / shoulders)
| Shaft shoulder db (mm) | 56.0 |
|---|---|
| Housing shoulder Da (mm) | 70.0 |
Bearing life (ISO 281 basic rating life)
| C / P | Equivalent load P (N) | L10 (106 rev) | L10h at 500 rpm |
|---|---|---|---|
| 4 | 31,750 | 102 | 3,386 |
| 6 | 21,167 | 392 | 13,083 |
| 8 | 15,875 | 1,024 | 34,133 |
| 10 | 12,700 | 2,154 | 71,814 |
| 15 | 8,467 | 8,323 | 277,449 |
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 127,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
| Brand | Timken |
|---|---|
| Source catalogue | Timken Tapered Roller Bearing Catalog (2016) |
| Catalogue page | p.726 (dimensions) |
| Series type | TS |
ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.
Nearby bore sizes
| Designation | Brand | Type | d | D | B/T | Dyn. rating | kg |
|---|---|---|---|---|---|---|---|
| LM102949/LM102910 | Timken | Tapered Roller | 45.24 | 73.43 | 19.81 | 72.9 kN | 0.31 |
| LM102949/LM102911 | Timken | Tapered Roller | 45.24 | 73.43 | 19.81 | 72.9 kN | 0.33 |
| LM603049/LM603011 | Timken | Tapered Roller | 45.24 | 77.79 | 19.84 | 76.3 kN | 0.37 |
| LM603049/LM603012 | Timken | Tapered Roller | 45.24 | 77.79 | 19.84 | 76.3 kN | 0.39 |
| LM603049/LM603014 | Timken | Tapered Roller | 45.24 | 79.97 | 19.84 | 76.3 kN | 0.4 |
| LM603049/LM603015 | Timken | Tapered Roller | 45.24 | 79.97 | 19.84 | 76.3 kN | 0.42 |
| LM603049AS/LM603011 | Timken | Tapered Roller | 45.24 | 77.79 | 19.84 | 76.3 kN | 0.37 |
| 3586/3520 | Timken | Tapered Roller | 45.24 | 84.14 | 30.89 | 113 kN | 0.68 |
Request a quotation for NP118297/NP422278
Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.