TIMKEN LL687949-90015

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available

Bore diameterd: 977.9 mm
Outside diameterD: 1130.3 mm
WidthB: 66.675 mm
Dynamic load ratingC: 1670 kN
Static load ratingC0: 5290 kN
Mass≈m: 101.64 kg

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Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications11 parameters

Core specifications
Parameter	Symbol	Value
Series		LL687900
Variant / construction		TS - Tapered Single
Bore diameter	d	977.9 mm
Outside diameter	D	1130.3 mm
Width	B	66.675 mm
Basic dynamic load rating	C	1670 kN
Basic static load rating	C0	5290 kN
Mass	≈m	101.64 kg
Precision class		ABMA Class 4
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.34
Y1 Factor		1.38
Y2 Factor		0.00
Y0 Factor		0.76
E Factor		0.44
Cg Factor		0.3631

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100128954
World Assembly Part Number		LL687949_LL687910
Inner Ring Part Number		LL687949
Outer Ring Part Number		LL687910
Drawing Number		E-21456
Upc		0053893663753
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:46.143

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TS - Tapered Single
Construction		Single Row Tapered Roller Bearing Assembly \| Imperial Series \| 38.5000 in Bore \| 44.5000 in OD \| 2.6250 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 4
Number Of Rows		1
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		79.000 mm
Radial Rating		433,000 N
Axial Rating		323,000 N
Dynamic Rating C1		1,670,000 N
Dynamic Rating C90		433,000 N
Dynamic Axial Rating Ca90		323,000 N
Dynamic Axial Rating Ca1		1,250,000 N
Static Radial Rating C0		5,290,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		6,720,000 N

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity: TIMKEN LL687949-90015
Document matching: Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

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