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KOYO / Single-row / metric series

KOYO 31330JR

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

Technical data available
Bore diameterd
150 mm
Outside diameterD
320 mm
WidthB
75 mm
Dynamic load ratingC
952 kN
Static load ratingC0
989 kN
Limiting speednG
980 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 diameterd150 mm
Outside diameterD320 mm
WidthB75 mm
Basic dynamic load ratingC952 kN
Basic static load ratingC0989 kN
Fatigue load limitPu110 kN
Limiting speednG980 r/min
Mass≈m28 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
d150 mm
D320 mm
T82 mm
B75 mm
C50 mm
R(Min.)5 mm
R1(Min.)4 mm
Basic Load Ratings : Cr952 kN
Basic Load Ratings : C0R989 kN
Fatigue Load Limit : Cu110 kN
Limiting Speeds(Grease Lub.)980 min-1
Limiting Speeds(Oil Lub.)1400 min-1
Load Center Spread : A100.1 mm
Constant E0.83
Axial Load Factors : Y10.73
Axial Load Factors : Y00.40
Da(Min.)272 mm
Db(Max.)179 mm
Da(Max.)302 mm
Db(Min.)301 mm
Sa(Min.)9 mm
Sb(Min.)27 mm
Ra(Max.)4 mm
Rb(Max.)3 mm
Mass(Refer.)28.0 kg

Technical documents & data sheet

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Record identity
KOYO 31330JR
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