SIFT BEARING STORE CATALOG

6581X/6525XTimkenTapered Roller

6581X/6525X is a Timken tapered roller bearing, bore 90 mm, O.D. 160 mm, width 55.1 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d90mm
Outside dia. D160mm
Width B55.1mm
Dynamic Cr439kN
Static C0r523kN
Weight4.49kg
Cr / C0r0.84
Mean dia. dm125mm

Original catalogue drawing - Timken TRB Catalog, page 290

6581X/6525X 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. D160 mmBore d90 mmWidth B55.1 mmCup width C44.45 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 diameter903.5433
DOutside diameter1606.2992
BInner-ring / bearing width55.12.1693
TOverall assembly width53.9752.125
CCup / outer-ring width44.451.75
rChamfer (min)30.1181

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)90.000
Bore d (in)3.5433
Outside dia. D (mm)160.000
Outside dia. D (in)6.2992
Width B (mm)55.100
Overall width T (mm)53.975
Overall width T (in)2.1250
Cup width C (mm)44.450

Load ratings & speeds

Basic dynamic load rating Cr (lbs)98800
Basic static load rating Cor (lbs)118000
Basic dynamic load rating Cr (N)439000
Basic static load rating C0r (N)523000
Dynamic rating C1 (N, ISO)439000
Dynamic rating C1 (lbf, ISO)98800
Radial rating C90 (N)114000
Radial rating C90 (lbf)25600
Thrust rating Ca90 (N)78100
Thrust rating Ca90 (lbf)17600
Static rating C0 (N)523000
Static rating C0 (lbf)118000
Factor e0.40
Factor Y1.50
Factor K1.46
Geometry factor G1198.6
Geometry factor G233.5
Geometry factor Cg0.1037
Effective load centre a (mm)-13.2

Weight

Weight (kg)4.49

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.0
Housing fillet r max (mm)3.0
Shaft shoulder da (mm)102.0
Shaft shoulder db (mm)109.0
Housing shoulder Da (mm)153.4
Housing shoulder Db (mm)141.0
Cage projection Aa (mm)4.1
Cage projection Ab (mm)0.9

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4109,7501023,386
673,16739213,083
854,8751,02434,133
1043,9002,15471,814
1529,2678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 439,000 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.290 (dimensions)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
6581X/6520TimkenTapered Roller90169.8555.1-5.33
6581X/6535TimkenTapered Roller90161.9355.1439 kN4.64

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30218TimkenTapered Roller9016030240 kN2.63
30318TimkenTapered Roller9019043375 kN5.56
31318TimkenTapered Roller9019043324 kN5.93
32018XTimkenTapered Roller9014032183 kN1.7
32218TimkenTapered Roller9016040312 kN3.47
32318TimkenTapered Roller9019064575 kN8.51
33118TimkenTapered Roller9015045306 kN3.15
42354X/42584TimkenTapered Roller90148.4328.97-1.9

Request a quotation for 6581X/6525X

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.