SIFT BEARING STORE CATALOG

LM125748/LM125711TimkenTapered Roller

LM125748/LM125711 is a Timken tapered roller bearing, bore 127 mm, O.D. 174.62 mm, width 36.51 mm. Dimensions, drawing, interchanges and price.

Brass cageCone + cup assembly
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Bore d127mm
Outside dia. D174.62mm
Width B36.51mm
Dynamic Cr220kN
Static C0r413kN
Weight2.54kg
Cr / C0r0.53
Mean dia. dm150.8mm

Original catalogue drawing - Timken TRB Catalog, page 314

LM125748/LM125711 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. D174.62 mmBore d127 mmWidth B36.51 mmCup width C31.75 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 diameter174.6256.875
BInner-ring / bearing width36.5121.4375
TOverall assembly width36.5121.4375
CCup / outer-ring width31.751.25
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)174.625
Outside dia. D (in)6.8750
Width B (mm)36.512
Overall width T (mm)36.512
Overall width T (in)1.4375
Cup width C (mm)31.750

Load ratings & speeds

Basic dynamic load rating Cr (lbs)49500
Basic static load rating Cor (lbs)92900
Basic dynamic load rating Cr (N)220000
Basic static load rating C0r (N)413000
Dynamic rating C1 (N, ISO)220000
Dynamic rating C1 (lbf, ISO)49500
Radial rating C90 (N)57100
Radial rating C90 (lbf)12800
Thrust rating Ca90 (N)30000
Thrust rating Ca90 (lbf)6750
Static rating C0 (N)413000
Static rating C0 (lbf)92900
Factor e0.31
Factor Y1.95
Factor K1.90
Geometry factor G1314.8
Geometry factor G2110.2
Geometry factor Cg0.1594
Effective load centre a (mm)-4.3

Weight

Weight (kg)2.54
Cone weight (kg)1.67
Cup weight (kg)0.88
Total weight (kg)2.55

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.3
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)134.9
Shaft shoulder db (mm)139.9
Housing shoulder Da (mm)167.9
Housing shoulder Db (mm)161.0
Cage projection Aa (mm)2.2
Cage projection Ab (mm)0.6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
455,0001023,386
636,66739213,083
827,5001,02434,133
1022,0002,15471,814
1514,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 220,000 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.314 (dimensions) / p.123 (cone) / p.123 (cup)
Series typeTS

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

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
74500/74845TimkenTapered Roller127214.9795.25665 kN14.33

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