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KOYO / Single-row / metric series

KOYO 30260

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

Technical data available
Bore diameterd
300 mm
Outside diameterD
540 mm
WidthB
85 mm
Dynamic load ratingC
1890 kN
Static load ratingC0
2360 kN
Limiting speednG
550 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 diameterd300 mm
Outside diameterD540 mm
WidthB85 mm
Basic dynamic load ratingC1890 kN
Basic static load ratingC02360 kN
Fatigue load limitPu240 kN
Limiting speednG550 r/min
Mass≈m84.7 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
d300 mm
D540 mm
T96 mm
B85 mm
C71 mm
R(Min.)6 mm
R1(Min.)5 mm
Basic Load Ratings : Cr1890 kN
Basic Load Ratings : C0R2360 kN
Fatigue Load Limit : Cu240 kN
Limiting Speeds(Grease Lub.)550 min-1
Limiting Speeds(Oil Lub.)730 min-1
Load Center Spread : A103.9 mm
Constant E0.42
Axial Load Factors : Y11.44
Axial Load Factors : Y00.79
Da(Min.)475 mm
Db(Max.)350 mm
Da(Max.)518 mm
Db(Min.)505 mm
Sa(Min.)14 mm
Sb(Min.)24 mm
Ra(Max.)5 mm
Rb(Max.)4 mm
Mass(Refer.)84.7 kg

Technical documents & data sheet

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Record identity
KOYO 30260
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