TIMKEN HM259048-99401

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

Technical data available

Bore diameterd: 317.5 mm
Outside diameterD: 447.675 mm
WidthB: 85.725 mm
Dynamic load ratingC: 1690 kN
Static load ratingC0: 2790 kN
Mass≈m: 40.54 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		HM259000
Variant / construction		TS - Tapered Single
Bore diameter	d	317.5 mm
Outside diameter	D	447.675 mm
Width	B	85.725 mm
Basic dynamic load rating	C	1690 kN
Basic static load rating	C0	2790 kN
Mass	≈m	40.54 kg
Precision class		ABMA Class 2
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.74
Y1 Factor		1.79
Y2 Factor		0.00
Y0 Factor		0.99
E Factor		0.33
Cg Factor		0.1809

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100136832
World Assembly Part Number		HM259048_HM259010
Inner Ring Part Number		HM259048
Outer Ring Part Number		HM259010
Drawing Number		C-32875
Upc		0013992323149
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:46.737

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TS - Tapered Single
Construction		Single Row Tapered Roller Bearing Assembly \| Imperial Series \| 12.5000 in Bore \| 17.6250 in OD \| 3.3750 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 2
Number Of Rows		1
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		96.125 mm
Radial Rating		438,000 N
Axial Rating		251,000 N
Dynamic Rating C1		1,690,000 N
Dynamic Rating C90		438,000 N
Dynamic Axial Rating Ca90		251,000 N
Dynamic Axial Rating Ca1		969,000 N
Static Radial Rating C0		2,790,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		2,720,000 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 HM259048-99401
Document matching: Exact designation, assembly scope, revision and units must agree.

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