SIFT BEARING STORE CATALOG

39578/39520TimkenTapered Roller

39578/39520 is a Timken tapered roller bearing, bore 53.98 mm, O.D. 112.71 mm, width 30.16 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
Request a quoteEmail usSearch the catalog
Bore d53.98mm
Outside dia. D112.71mm
Width B30.16mm
Dynamic Cr167kN
Static C0r224kN
Weight1.44kg
Cr / C0r0.75
Mean dia. dm83.3mm

Original catalogue drawing - Timken TRB Catalog, page 212

39578/39520 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. D112.71 mmBore d53.98 mmWidth B30.16 mmCup width C23.81 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 diameter53.9752.125
DOutside diameter112.7124.4375
BInner-ring / bearing width30.1621.1875
TOverall assembly width30.1621.1875
CCup / outer-ring width23.8120.9375
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)53.975
Bore d (in)2.1250
Outside dia. D (mm)112.712
Outside dia. D (in)4.4375
Width B (mm)30.162
Overall width T (mm)30.162
Overall width T (in)1.1875
Cup width C (mm)23.812

Load ratings & speeds

Basic dynamic load rating Cr (lbs)37500
Basic static load rating Cor (lbs)50300
Basic dynamic load rating Cr (N)167000
Basic static load rating C0r (N)224000
Dynamic rating C1 (N, ISO)167000
Dynamic rating C1 (lbf, ISO)37500
Radial rating C90 (N)43300
Radial rating C90 (lbf)9730
Thrust rating Ca90 (N)25100
Thrust rating Ca90 (lbf)5650
Static rating C0 (N)224000
Static rating C0 (lbf)50300
Factor e0.34
Factor Y1.77
Factor K1.72
Geometry factor G184.3
Geometry factor G223.7
Geometry factor Cg0.1074
Effective load centre a (mm)-6.6

Weight

Weight (kg)1.44
Cone weight (kg)1.09
Cup weight (kg)0.36
Total weight (kg)1.45

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)64.0
Shaft shoulder db (mm)70.0
Housing shoulder Da (mm)107.0
Housing shoulder Db (mm)101.0
Cage projection Aa (mm)1.6
Cage projection Ab (mm)2.7

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
441,7501023,386
627,83339213,083
820,8751,02434,133
1016,7002,15471,814
1511,1338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 167,000 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.212 (dimensions) / p.88 (cone) / p.88 (cup)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
33895/33821TimkenTapered Roller53.9895.2528.57130 kN0.8
33895/33821DTimkenTapered Roller53.9895.2563.5226 kN1.75
33895/33822TimkenTapered Roller53.9895.2528.57130 kN0.81
389A/382TimkenTapered Roller53.9898.4221.95108 kN0.69
389A/382ATimkenTapered Roller53.9896.8421.95108 kN0.64
389A/384DTimkenTapered Roller53.9810052.39188 kN1.6
389A/384EDTimkenTapered Roller53.9810049.2188 kN1.52
45287/45220TimkenTapered Roller53.98104.7830.96153 kN1.16

Request a quotation for 39578/39520

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.