SIFT BEARING STORE CATALOG

681/672TimkenTapered Roller

681/672 is a Timken tapered roller bearing, bore 92.08 mm, O.D. 168.28 mm, width 41.27 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d92.08mm
Outside dia. D168.28mm
Width B41.27mm
Dynamic Cr265kN
Static C0r386kN
Weight3.85kg
Cr / C0r0.69
Mean dia. dm130.2mm

Original catalogue drawing - Timken TRB Catalog, page 292

681/672 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. D168.28 mmBore d92.08 mmWidth B41.27 mmCup width C30.16 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 diameter92.0753.625
DOutside diameter168.2756.625
BInner-ring / bearing width41.2751.625
TOverall assembly width41.2751.625
CCup / outer-ring width30.1621.1875
rChamfer (min)3.30.1299

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)92.075
Bore d (in)3.6250
Outside dia. D (mm)168.275
Outside dia. D (in)6.6250
Width B (mm)41.275
Overall width T (mm)41.275
Overall width T (in)1.6250
Cup width C (mm)30.162

Load ratings & speeds

Basic dynamic load rating Cr (lbs)59500
Basic static load rating Cor (lbs)86700
Basic dynamic load rating Cr (N)265000
Basic static load rating C0r (N)386000
Dynamic rating C1 (N, ISO)265000
Dynamic rating C1 (lbf, ISO)59500
Radial rating C90 (N)68600
Radial rating C90 (lbf)15400
Thrust rating Ca90 (N)55300
Thrust rating Ca90 (lbf)12400
Static rating C0 (N)386000
Static rating C0 (lbf)86700
Factor e0.47
Factor Y1.28
Factor K1.24
Geometry factor G1182.5
Geometry factor G237.3
Geometry factor Cg0.1056
Effective load centre a (mm)-2.8

Weight

Weight (kg)3.85
Cone weight (kg)2.61
Cup weight (kg)1.22
Total weight (kg)3.83

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)104.0
Shaft shoulder db (mm)110.0
Housing shoulder Da (mm)160.0
Housing shoulder Db (mm)149.0
Cage projection Aa (mm)4.9
Cage projection Ab (mm)2.1

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
466,2501023,386
644,16739213,083
833,1251,02434,133
1026,5002,15471,814
1517,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 265,000 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.292 (dimensions) / p.42 (cone) / p.42 (cup)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
681/672DTimkenTapered Roller92.08168.2892.08461 kN8.52

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
42362/42584TimkenTapered Roller92.08148.4328.97163 kN1.83
42362/42587TimkenTapered Roller92.08149.2228.97163 kN1.98
42362/42587DTimkenTapered Roller92.08149.2266.67284 kN4.08
42362D/42584TimkenTapered Roller92.08148.4357.94284 kN3.87
47890/47820TimkenTapered Roller92.08146.0534.92197 kN2.06
598/592TimkenTapered Roller92.08152.436.32-2.68
598/592-STimkenTapered Roller92.08152.436.32216 kN2.75
598/592ATimkenTapered Roller92.08152.436.32216 kN2.61

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