SIFT BEARING STORE CATALOG

74500/74850TimkenTapered Roller

74500/74850 is a Timken tapered roller bearing, bore 127 mm, O.D. 215.9 mm, width 47.62 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d127mm
Outside dia. D215.9mm
Width B47.62mm
Dynamic Cr382kN
Static C0r614kN
Weight6.96kg
Cr / C0r0.62
Mean dia. dm171.4mm

Original catalogue drawing - Timken TRB Catalog, page 316

74500/74850 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. D215.9 mmBore d127 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 diameter1275
DOutside diameter215.98.5
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)127.000
Bore d (in)5.0000
Outside dia. D (mm)215.900
Outside dia. D (in)8.5000
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)6.96

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)141.0
Shaft shoulder db (mm)148.0
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.316 (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
74500/74845TimkenTapered Roller127214.9795.25665 kN14.33
74500/74851CDTimkenTapered Roller127215.9106.36665 kN14.81

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
48290/48220TimkenTapered Roller127182.5638.1268 kN3.26
48290/48220DTimkenTapered Roller127182.5685.72466 kN7.09
67388/67320TimkenTapered Roller127203.246.04368 kN5.65
67388/67322TimkenTapered Roller127196.8546.04368 kN5.05
67388/67322DTimkenTapered Roller127196.85101.6640 kN10.71
67388/67325DTimkenTapered Roller127200.03101.6640 kN11.36
67388D/67322TimkenTapered Roller127196.8592.08640 kN10.66
750500/751200TimkenTapered Roller127304.86.4--

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