SIFT BEARING STORE CATALOG

NP837820/NP562053TimkenTapered Roller

NP837820/NP562053 is a Timken tapered roller bearing, bore 460 mm, O.D. 860 mm, width 380 mm. Dimensions, drawing, interchanges and price.

High precision classCone + cup assembly
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Bore d460mm
Outside dia. D860mm
Width B380mm
Dynamic Cr12500kN
Weight1087kg
Mean dia. dm660mm

Original catalogue drawing - Timken TRB Catalog, page 722

NP837820/NP562053 Timken Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D860 mmBore d460 mmWidth B380 mm

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)

SymbolDimensionmminch
dBore diameter46018.1102
DOutside diameter86033.8583
BInner-ring / bearing width38014.9606
TOverall assembly width42016.5354

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)460.000
Bore d (in)18.1102
Outside dia. D (mm)860.000
Outside dia. D (in)33.8583
Width B (mm)380.000
Width B (in)14.9606
Overall width T (mm)420.000
Overall width T (in)16.5354

Load ratings & speeds

Basic dynamic load rating Cr (lbs)2810000
Basic dynamic load rating Cr (N)12500000
Dynamic rating C1 (N, ISO)12500000
Dynamic rating C1 (lbf, ISO)2810000
Radial rating C90 (N)1860000
Radial rating C90 (lbf)419000
Thrust rating Ca90 (N)1840000
Thrust rating Ca90 (lbf)413000
Factor e0.58
Factor Y11.17
Factor Y21.75
Factor K1.01

Weight

Weight (kg)1087.0

Mounting dimensions (fillets / shoulders)

Shaft shoulder db (mm)540.0
Housing shoulder Da (mm)765.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
43,125,0001023,386
62,083,33339213,083
81,562,5001,02434,133
101,250,0002,15471,814
15833,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 12,500,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.722 (dimensions)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
671800/672873TimkenTapered Roller457.2730.159.7--
80180/80217TimkenTapered Roller457.2552.4544.45626 kN18.9
EE244180/244235TimkenTapered Roller457.2596.973.031410 kN49.51
EE244180/244236CDTimkenTapered Roller457.2596.9165.12460 kN105.7
EE244181D/244235TimkenTapered Roller457.2596.9130.182460 kN92.2
EE423181D/423300TimkenTapered Roller457.2761.87209.556040 kN413.25
EE480181D/480340TimkenTapered Roller457.2863.5368.310800 kN978.97
EE525183D/525320TimkenTapered Roller457.2812.8342.98610 kN741.07

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