99,016 bearing records · search, filter and compare

KOYO / Single-row / inch series

KOYO JHM840449/10

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

Technical data available
Bore diameterd
200 mm
Outside diameterD
300 mm
WidthB
62 mm
Dynamic load ratingC
773 kN
Static load ratingC0
1140 kN
Limiting speednG
1100 r/min

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 specifications9 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSingle-row / Inch series
Bore diameterd200 mm
Outside diameterD300 mm
WidthB62 mm
Basic dynamic load ratingC773 kN
Basic static load ratingC01140 kN
Fatigue load limitPu124 kN
Limiting speednG1100 r/min
Mass≈m15.1 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Inch series
Official Classification 1Tapered roller bearings / Single-row / Inch series
Technical Data23 parameters
Technical Data
ParameterSymbolValue
d200.000 mm
D300.000 mm
T65.000 mm
B62.000 mm
C51.000 mm
R(Min.)3.6 mm
R1(Min.)2.5 mm
Basic Load Ratings : Cr773 kN
Basic Load Ratings : C0R1140 kN
Fatigue Load Limit : Cu124 kN
Limiting Speeds(Grease Lub.)1100 min-1
Limiting Speeds(Oil Lub.)1500 min-1
Load Center Spread : A72.1 mm
Constant :E0.52
Axial Load Factors : Y11.15
Axial Load Factors : Y00.63
Da213.0 mm
Db218.0 mm
Da270.0 mm
Db288.0 mm
Ra(Max.)3.6 mm
Rb(Max.)2.5 mm
Mass(Refer.)15.1 kg

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
KOYO JHM840449/10
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 →

Search the consolidated catalogue

Find, filter and compare bearing model data in one place.

Open model search