SIFT BEARING STORE CATALOG

495/492ATimkenTapered Roller

495/492A is a Timken tapered roller bearing, bore 82.55 mm, O.D. 133.35 mm, width 29.77 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d82.55mm
Outside dia. D133.35mm
Width B29.77mm
Dynamic Cr154kN
Static C0r216kN
Weight1.49kg
Cr / C0r0.71
Mean dia. dm107.9mm

Original catalogue drawing - Timken TRB Catalog, page 278

495/492A 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. D133.35 mmBore d82.55 mmWidth B29.77 mmCup width C22.23 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 diameter82.553.25
DOutside diameter133.355.25
BInner-ring / bearing width29.7691.172
TOverall assembly width30.1621.1875
CCup / outer-ring width22.2250.875
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)82.550
Bore d (in)3.2500
Outside dia. D (mm)133.350
Outside dia. D (in)5.2500
Width B (mm)29.769
Overall width T (mm)30.162
Overall width T (in)1.1875
Cup width C (mm)22.225

Load ratings & speeds

Basic dynamic load rating Cr (lbs)34700
Basic static load rating Cor (lbs)48600
Basic dynamic load rating Cr (N)154000
Basic static load rating C0r (N)216000
Dynamic rating C1 (N, ISO)154000
Dynamic rating C1 (lbf, ISO)34700
Radial rating C90 (N)40000
Radial rating C90 (lbf)9000
Thrust rating Ca90 (N)30500
Thrust rating Ca90 (lbf)6850
Static rating C0 (N)216000
Static rating C0 (lbf)48600
Factor e0.44
Factor Y1.35
Factor K1.31
Geometry factor G1104.6
Geometry factor G229.3
Geometry factor Cg0.1252
Effective load centre a (mm)-0.8

Weight

Weight (kg)1.49
Cone weight (kg)1.07
Cup weight (kg)0.42
Total weight (kg)1.49

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)90.0
Shaft shoulder db (mm)97.0
Housing shoulder Da (mm)128.0
Housing shoulder Db (mm)120.0
Cage projection Aa (mm)2.5
Cage projection Ab (mm)2.2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
438,5001023,386
625,66739213,083
819,2501,02434,133
1015,4002,15471,814
1510,2678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 154,000 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.278 (dimensions) / p.34 (cone) / p.34 (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
495-S/492ATimkenTapered Roller71.44133.3529.77-1.81
495-S/493TimkenTapered Roller71.44136.5329.77154 kN1.93
495-S/493DTimkenTapered Roller71.44136.5369.85269 kN4.41
495/493TimkenTapered Roller82.55136.5329.77154 kN1.61
495/493DTimkenTapered Roller82.55136.5369.85269 kN3.63

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
27687/27620TimkenTapered Roller82.55125.4125.4117 kN1.07
47685/47620TimkenTapered Roller82.55133.3533.34214 kN1.72
47685/47621TimkenTapered Roller82.55139.9933.34214 kN2.13
47686/47620TimkenTapered Roller82.55133.3533.34214 kN1.71
47686/47621TimkenTapered Roller82.55139.9933.34214 kN2.12
47687/47620TimkenTapered Roller82.55133.3533.34214 kN1.7
580/572TimkenTapered Roller82.55139.9936.1207 kN2.13
580/572DTimkenTapered Roller82.55139.9982.55360 kN4.74

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