SIFT BEARING STORE CATALOG

NP378108/NP676901TimkenTapered Roller

NP378108/NP676901 is a Timken tapered roller bearing, bore 560 mm, O.D. 1080 mm, width 470 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d560mm
Outside dia. D1080mm
Width B470mm
Dynamic Cr18600kN
Weight2182.15kg
Mean dia. dm820mm

Original catalogue drawing - Timken TRB Catalog, page 722

NP378108/NP676901 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. D1080 mmBore d560 mmWidth B470 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 diameter56022.0472
DOutside diameter108042.5197
BInner-ring / bearing width47018.5039
TOverall assembly width530.02220.867

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)560.000
Bore d (in)22.0472
Outside dia. D (mm)1080.000
Outside dia. D (in)42.5197
Width B (mm)470.000
Width B (in)18.5040
Overall width T (mm)530.022
Overall width T (in)20.8670

Load ratings & speeds

Basic dynamic load rating Cr (lbs)4190000
Basic dynamic load rating Cr (N)18600000
Dynamic rating C1 (N, ISO)18600000
Dynamic rating C1 (lbf, ISO)4190000
Radial rating C90 (N)2770000
Radial rating C90 (lbf)624000
Thrust rating Ca90 (N)2210000
Thrust rating Ca90 (lbf)497000
Factor e0.47
Factor Y11.45
Factor Y22.16
Factor K1.25

Weight

Weight (kg)2182.15

Mounting dimensions (fillets / shoulders)

Shaft shoulder db (mm)660.0
Housing shoulder Da (mm)954.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
44,650,0001023,386
63,100,00039213,083
82,325,0001,02434,133
101,860,0002,15471,814
151,240,0008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 18,600,000 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
NP915736/NP585761TimkenTapered Roller560820258.55250 kN406.98
NP934748/NP920752TimkenTapered Roller5608202685250 kN412.68
EE327220/327355TimkenTapered Roller558.8901.57129.383790 kN311.89
EE327220/327357DTimkenTapered Roller558.8901.7292.16610 kN656.31
EE542220/542290TimkenTapered Roller558.8736.676.21400 kN77.61
EE542220/542291CDTimkenTapered Roller558.8736.6165.12440 kN165.28
EE647220/647285TimkenTapered Roller558.8723.973.031540 kN73.36
EE843220/843290TimkenTapered Roller558.8736.688.112070 kN94.77

Request a quotation for NP378108/NP676901

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.

Online enquiry formrichard@bearingsfit.com