SIFT BEARING STORE CATALOG

643/632DTimkenTapered Roller

643/632D is a Timken tapered roller bearing, bore 69.85 mm, O.D. 136.53 mm, height 95.25 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
Request a quoteEmail usSearch the catalog
Bore d69.85mm
Outside dia. D136.53mm
Overall width T95.25mm
Dynamic Cr481kN
Weight5.78kg
Mean dia. dm103.2mm

Original catalogue drawing - Timken TRB Catalog, page 538

643/632D 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

DdTOutside dia. D136.53 mmBore d69.85 mmOverall width T95.25 mmCup width C76.2 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 diameter69.852.75
DOutside diameter136.5255.375
TOverall assembly width95.253.75
CCup / outer-ring width76.23
rChamfer (min)1.50.0591

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)69.850
Bore d (in)2.7500
Outside dia. D (mm)136.525
Outside dia. D (in)5.3750
Overall width T (mm)95.250
Overall width T (in)3.7500
Cup width C (mm)76.200
Cup width C (in)3.0000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)108000
Basic dynamic load rating Cr (N)481000
Dynamic rating C1 (N, ISO)481000
Dynamic rating C1 (lbf, ISO)108000
Radial rating C90 (N)71600
Radial rating C90 (lbf)16100
Thrust rating Ca90 (N)44400
Thrust rating Ca90 (lbf)9980
Factor e0.36
Factor Y11.86
Factor Y22.78
Factor K1.61
Geometry factor G1106.4
Geometry factor G221.0
Geometry factor Cg0.0814

Weight

Weight (kg)5.78

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.5
Shaft shoulder db (mm)86.0
Housing shoulder Da (mm)125.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4120,2501023,386
680,16739213,083
860,1251,02434,133
1048,1002,15471,814
1532,0678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 481,000 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.538 (dimensions)
Series typeTDO

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
NA643/632DTimkenTapered Roller69.85136.5395.25406 kN5.88
NA643SW/632DTimkenTapered Roller69.85136.5395.25406 kN5.92

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
643/632TimkenTapered Roller69.85136.5341.27276 kN2.61
643/633TimkenTapered Roller69.85130.1841.27276 kN2.27

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
29675/29620TimkenTapered Roller69.85112.7125.4111 kN0.95
29675/29622DTimkenTapered Roller69.85114.2958.74192 kN2.2
29675/29630TimkenTapered Roller69.85120.6525.4111 kN1.16
33275/33461TimkenTapered Roller69.85117.4730.16-1.26
33275/33462TimkenTapered Roller69.85117.4730.16138 kN1.26
33275/33462DTimkenTapered Roller69.85117.4766.67241 kN2.81
33275/33472TimkenTapered Roller69.8512030.16138 kN1.35
47487/47420TimkenTapered Roller69.8512032.55179 kN1.46

Request a quotation for 643/632D

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry formrichard@bearingsfit.com