TIMKEN LL687949-90018

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: 139.7 mm
Dynamic load ratingC: 2910 kN
Static load ratingC0: 10600 kN
Mass≈m: 211.81 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		TDO - Tapered Double Outer
Bore diameter	d	977.9 mm
Outside diameter	D	1130.3 mm
Width	B	139.7 mm
Basic dynamic load rating	C	2910 kN
Basic static load rating	C0	10600 kN
Mass	≈m	211.81 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		1.55
Y2 Factor		2.30
Y0 Factor		1.51
E Factor		0.44
Cg Factor		0.3631

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100129071
World Assembly Part Number		LL687949_LL687910D
Inner Ring Part Number		LL687949
Outer Ring Part Number		LL687910D
Drawing Number		E-20409
Upc		0053893797304
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:48.497

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TDO - Tapered Double Outer
Construction		Double Row Tapered Roller Bearing Assembly \| Imperial Series \| 38.5000 in Bore \| 44.5000 in OD \| 5.5000 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 4
Number Of Rows		2
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		0.000 mm
Radial Rating		754,000 N
Axial Rating		323,000 N
Dynamic Rating C1		2,910,000 N
Dynamic Rating C90		754,000 N
Dynamic Axial Rating Ca90		323,000 N
Dynamic Axial Rating Ca1		1,250,000 N
Static Radial Rating C0		10,600,000 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 LL687949-90018
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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