TIMKEN M278749 / M278710

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

Technical data available

Bore diameterd: 571.5 mm
Outside diameterD: 812.8 mm
WidthB: 155.575 mm
Dynamic load ratingC: 4530 kN
Static load ratingC0: 10600 kN
Mass≈m: 255.86 kg

Compare this model by brand →Check interchange requirements →

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

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		M278700
Variant / construction		TS - Tapered Single
Bore diameter	d	571.5 mm
Outside diameter	D	812.8 mm
Width	B	155.575 mm
Basic dynamic load rating	C	4530 kN
Basic static load rating	C0	10600 kN
Mass	≈m	255.86 kg
Precision class		ABMA Class 2
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.76
Y1 Factor		1.80
Y2 Factor		0.00
Y0 Factor		0.99
E Factor		0.33
Cg Factor		0.2990

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100174000
World Assembly Part Number		M278749_M278710
Inner Ring Part Number		M278749
Outer Ring Part Number		M278710
Drawing Number		E-47839
Upc		0053893797519
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:47.4

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TS - Tapered Single
Construction		Single Row Tapered Roller Bearing Assembly \| Imperial Series \| 22.5000 in Bore \| 32.0000 in OD \| 6.1250 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		177.675 mm
Radial Rating		1,180,000 N
Axial Rating		669,000 N
Dynamic Rating C1		4,530,000 N
Dynamic Rating C90		1,180,000 N
Dynamic Axial Rating Ca90		669,000 N
Dynamic Axial Rating Ca1		2,580,000 N
Static Radial Rating C0		10,600,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		10,200,000 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 M278749 / M278710
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.

Look up another model or check drawing requirements →

Previous product← TIMKEN M86643 / M86610 Tapered roller bearing

Next productTIMKEN M278749-902A3 Tapered roller bearing →