SIFT BEARING STORE CATALOG

438/432TimkenTapered Roller

438/432 is a Timken tapered roller bearing, bore 44.45 mm, O.D. 95.25 mm, width 29.9 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d44.45mm
Outside dia. D95.25mm
Width B29.9mm
Dynamic Cr127kN
Static C0r144kN
Weight0.93kg
Cr / C0r0.88
Mean dia. dm69.8mm

Original catalogue drawing - Timken TRB Catalog, page 174

438/432 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. D95.25 mmBore d44.45 mmWidth B29.9 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 diameter44.451.75
DOutside diameter95.253.75
BInner-ring / bearing width29.91.1772
TOverall assembly width27.7831.0938
CCup / outer-ring width22.2250.875
rChamfer (min)2.30.0906

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)44.450
Bore d (in)1.7500
Outside dia. D (mm)95.250
Outside dia. D (in)3.7500
Width B (mm)29.900
Overall width T (mm)27.783
Overall width T (in)1.0938
Cup width C (mm)22.225

Load ratings & speeds

Basic dynamic load rating Cr (lbs)28500
Basic static load rating Cor (lbs)32400
Basic dynamic load rating Cr (N)127000
Basic static load rating C0r (N)144000
Dynamic rating C1 (N, ISO)127000
Dynamic rating C1 (lbf, ISO)28500
Radial rating C90 (N)32900
Radial rating C90 (lbf)7400
Thrust rating Ca90 (N)16000
Thrust rating Ca90 (lbf)3600
Static rating C0 (N)144000
Static rating C0 (lbf)32400
Factor e0.28
Factor Y2.11
Factor K2.05
Geometry factor G142.5
Geometry factor G211.3
Geometry factor Cg0.0805
Effective load centre a (mm)-9.1

Weight

Weight (kg)0.93

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)2.3
Shaft shoulder da (mm)51.0
Shaft shoulder db (mm)57.0
Housing shoulder Da (mm)87.0
Housing shoulder Db (mm)83.0
Cage projection Aa (mm)1.6
Cage projection Ab (mm)0.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
431,7501023,386
621,16739213,083
815,8751,02434,133
1012,7002,15471,814
158,4678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 127,000 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.174 (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
435/432TimkenTapered Roller44.4595.2529.9127 kN0.94
438/432ATimkenTapered Roller44.4595.2529.9127 kN0.93

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
438/432ATimkenTapered Roller44.4595.2529.9127 kN0.93

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
12175/12303TimkenTapered Roller44.4576.9917.1449.5 kN0.31
13175/13318TimkenTapered Roller44.4580.9617.4650.8 kN0.39
13176D/13318TimkenTapered Roller44.4580.9631.7588.5 kN0.74
17884/17830TimkenTapered Roller44.4579.3833.55-0.52
18685/18620TimkenTapered Roller44.4579.3817.4652 kN0.34
18685/18620DTimkenTapered Roller44.4579.3841.2790.6 kN0.78
25580/25518TimkenTapered Roller44.4581.9725.4-0.53
25580/25519TimkenTapered Roller44.4582.5525.490.5 kN0.55

Request a quotation for 438/432

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