SIFT BEARING STORE CATALOG

2690/2631TimkenTapered Roller

2690/2631 is a Timken tapered roller bearing, bore 29.37 mm, O.D. 66.42 mm, width 25.43 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d29.37mm
Outside dia. D66.42mm
Width B25.43mm
Dynamic Cr76.6kN
Static C0r81.7kN
Weight0.39kg
Cr / C0r0.94
Mean dia. dm47.9mm

Original catalogue drawing - Timken TRB Catalog, page 106

2690/2631 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. D66.42 mmBore d29.37 mmWidth B25.43 mmCup width C19.05 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 diameter29.3671.1562
DOutside diameter66.4212.615
BInner-ring / bearing width25.4331.0013
TOverall assembly width23.8120.9375
CCup / outer-ring width19.050.75
rChamfer (min)1.30.0512

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)29.367
Bore d (in)1.1562
Outside dia. D (mm)66.421
Outside dia. D (in)2.6150
Width B (mm)25.433
Overall width T (mm)23.812
Overall width T (in)0.9375
Cup width C (mm)19.050

Load ratings & speeds

Basic dynamic load rating Cr (lbs)17200
Basic static load rating Cor (lbs)18400
Basic dynamic load rating Cr (N)76600
Basic static load rating C0r (N)81700
Dynamic rating C1 (N, ISO)76600
Dynamic rating C1 (lbf, ISO)17200
Radial rating C90 (N)19900
Radial rating C90 (lbf)4470
Thrust rating Ca90 (N)8640
Thrust rating Ca90 (lbf)1940
Static rating C0 (N)81700
Static rating C0 (lbf)18400
Factor e0.25
Factor Y2.36
Factor K2.30
Geometry factor G119.3
Geometry factor G28.0
Geometry factor Cg0.0598
Effective load centre a (mm)-9.4

Weight

Weight (kg)0.39

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.3
Shaft shoulder da (mm)35.0
Shaft shoulder db (mm)41.0
Housing shoulder Da (mm)60.0
Housing shoulder Db (mm)58.0
Cage projection Aa (mm)0.7
Cage projection Ab (mm)0.8

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
419,1501023,386
612,76739213,083
89,5751,02434,133
107,6602,15471,814
155,1078,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 76,600 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.106 (dimensions)
Series typeTS

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
2691/2631TimkenTapered Roller29.3766.4225.4376.6 kN0.4

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
2690/2620TimkenTapered Roller29.3763.125.43-0.35

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
2691/2631TimkenTapered Roller29.3766.4225.4376.6 kN0.4
L45449/L45410TimkenTapered Roller2950.2914.73-0.11
322/312TimkenTapered Roller29.9772.6322.17-0.49
02474A/02419TimkenTapered Roller29.9966.9922.23-0.35
02474A/02420ATimkenTapered Roller29.9968.2622.2363.8 kN0.39
14118AS/14272TimkenTapered Roller29.9969.0119.2-0.34
14118AS/14276TimkenTapered Roller29.9969.0119.264.7 kN0.36
15115/15243TimkenTapered Roller29.9961.9119.05-0.25

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