SIFT BEARING STORE CATALOG

HM88638/HM88610TimkenTapered Roller

HM88638/HM88610 is a Timken tapered roller bearing, bore 31.99 mm, O.D. 72.23 mm, width 25.4 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d31.99mm
Outside dia. D72.23mm
Width B25.4mm
Mean dia. dm52.1mm

Original catalogue drawing - Timken - Single Row

HM88638/HM88610 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. D72.23 mmBore d31.99 mmWidth B25.4 mmCup width C19.84 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 diameter31.9861.2593
DOutside diameter72.2332.8438
BInner-ring / bearing width25.41
TOverall assembly width25.41
CCup / outer-ring width19.8420.7812
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)31.986
Bore d (in)1.2593
Outside dia. D (mm)72.233
Outside dia. D (in)2.8438
Width B (mm)25.400
Width B (in)1.0000
Overall width T (mm)25.400
Overall width T (in)1.0000
Cup width C (mm)19.842

Weight

Cup weight (kg)0.18

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.3
Housing fillet r max (mm)2.3

Source & traceability

BrandTimken
Source catalogueTimken Bearing Dimension Catalog
Catalogue pagep.304 (dimensions) / p.114 (cone) / p.114 (cup)

Dimensions and component weights only - this catalogue publishes no load ratings or speeds.

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
HM88638/HM88611TimkenTapered Roller31.9971.9725.476.8 kN0.54

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
02476X/02419TimkenTapered Roller31.9966.9920.5-0.33
26126X/26274TimkenTapered Roller3269.7218.92-0.35
26126X/26283TimkenTapered Roller327218.9258.8 kN0.37
26126/26274TimkenTapered Roller3269.7218.92-0.35
26126/26283TimkenTapered Roller327218.9258.8 kN0.37
02475/02419TimkenTapered Roller31.7566.9922.23-0.33
02475/02420TimkenTapered Roller31.7568.2622.2363.8 kN0.38
02476/02420TimkenTapered Roller31.7568.2622.2363.8 kN0.38

Request a quotation for HM88638/HM88610

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