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KOYO / Single-row / metric series

KOYO 32938JR

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

Technical data available
Bore diameterd
190 mm
Outside diameterD
260 mm
WidthB
45 mm
Dynamic load ratingC
459 kN
Static load ratingC0
789 kN
Limiting speednG
1200 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 / Metric series
Bore diameterd190 mm
Outside diameterD260 mm
WidthB45 mm
Basic dynamic load ratingC459 kN
Basic static load ratingC0789 kN
Fatigue load limitPu88.6 kN
Limiting speednG1200 r/min
Mass≈m6.89 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Metric series
Official Classification 1Tapered roller bearings / Single-row / Metric series
Technical Data25 parameters
Technical Data
ParameterSymbolValue
d190 mm
D260 mm
T45 mm
B45 mm
C34 mm
R(Min.)2.5 mm
R1(Min.)2 mm
Basic Load Ratings : Cr459 kN
Basic Load Ratings : C0R789 kN
Fatigue Load Limit : Cu88.6 kN
Limiting Speeds(Grease Lub.)1200 min-1
Limiting Speeds(Oil Lub.)1600 min-1
Load Center Spread : A55.0 mm
Constant E0.48
Axial Load Factors : Y11.26
Axial Load Factors : Y00.69
Da(Min.)235 mm
Db(Max.)204 mm
Da(Max.)250 mm
Db(Min.)252 mm
Sa(Min.)8 mm
Sb(Min.)11 mm
Ra(Max.)2 mm
Rb(Max.)2 mm
Mass(Refer.)6.89 kg

Technical documents & data sheet

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Record identity
KOYO 32938JR
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