SIFT BEARING STORE CATALOG

74525/74845TimkenTapered Roller

74525/74845 is a Timken tapered roller bearing, bore 133.35 mm, O.D. 214.97 mm, width 47.62 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d133.35mm
Outside dia. D214.97mm
Width B47.62mm
Dynamic Cr382kN
Static C0r614kN
Weight6.37kg
Cr / C0r0.62
Mean dia. dm174.2mm

Original catalogue drawing - Timken TRB Catalog, page 318

74525/74845 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. D214.97 mmBore d133.35 mmWidth B47.62 mmCup width C34.92 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 diameter133.355.25
DOutside diameter214.9758.4636
BInner-ring / bearing width47.6251.875
TOverall assembly width47.6251.875
CCup / outer-ring width34.9251.375
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)133.350
Bore d (in)5.2500
Outside dia. D (mm)214.975
Outside dia. D (in)8.4636
Width B (mm)47.625
Overall width T (mm)47.625
Overall width T (in)1.8750
Cup width C (mm)34.925

Load ratings & speeds

Basic dynamic load rating Cr (lbs)85900
Basic static load rating Cor (lbs)138000
Basic dynamic load rating Cr (N)382000
Basic static load rating C0r (N)614000
Dynamic rating C1 (N, ISO)382000
Dynamic rating C1 (lbf, ISO)85900
Radial rating C90 (N)99000
Radial rating C90 (lbf)22300
Thrust rating Ca90 (N)82600
Thrust rating Ca90 (lbf)18600
Static rating C0 (N)614000
Static rating C0 (lbf)138000
Factor e0.49
Factor Y1.23
Factor K1.20
Geometry factor G1362.9
Geometry factor G268.5
Geometry factor Cg0.1338
Effective load centre a (mm)2.3

Weight

Weight (kg)6.37
Cone weight (kg)4.57
Cup weight (kg)1.84
Total weight (kg)6.41

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)146.0
Shaft shoulder db (mm)152.0
Housing shoulder Da (mm)208.0
Housing shoulder Db (mm)196.0
Cage projection Aa (mm)4.8
Cage projection Ab (mm)2.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
495,5001023,386
663,66739213,083
847,7501,02434,133
1038,2002,15471,814
1525,4678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 382,000 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.318 (dimensions) / p.108 (cone) / p.108 (cup)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
74525/74850TimkenTapered Roller133.35215.947.62382 kN6.48
74525/74851CDTimkenTapered Roller133.35215.9106.36665 kN13.84
74525/74853TimkenTapered Roller133.35215.947.62382 kN7.15

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
48385/48320TimkenTapered Roller133.35190.539.69283 kN3.58
48385/48320DTimkenTapered Roller133.35190.585.72492 kN7.42
67390/67320TimkenTapered Roller133.35203.23.5-5.22
67390/67322TimkenTapered Roller133.35196.8546.04368 kN4.58
67390/67322DTimkenTapered Roller133.35196.85101.6640 kN9.64
67390/67325DTimkenTapered Roller133.35200.03101.6640 kN10.29
67390D/67322TimkenTapered Roller133.35196.8592.08640 kN9.73
67391/67320TimkenTapered Roller133.35203.246.04368 kN5.15

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