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KOYO / Double-row / tdi type

KOYO 45268

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

Technical data available
Bore diameterd
340 mm
Outside diameterD
520 mm
WidthB
133 mm
Dynamic load ratingC
2380 kN
Static load ratingC0
3850 kN
Limiting speednG
420 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 / constructionDouble-row / TDI type
Bore diameterd340 mm
Outside diameterD520 mm
WidthB133 mm
Basic dynamic load ratingC2380 kN
Basic static load ratingC03850 kN
Fatigue load limitPu372 kN
Limiting speednG420 r/min
Mass≈m104 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-020-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Double-row - TDI type
Official Classification 1Tapered roller bearings / Double-row / TDI type
Technical Data22 parameters
Technical Data
ParameterSymbolValue
d340 mm
D520 mm
B133 mm
T133 mm
R(Min.)5 mm
R1(Min.)6 mm
Basic Load Ratings : Cr2380 kN
Basic Load Ratings : C0R3850 kN
Fatigue Load Limit : Cu372 kN
Limiting Speeds(Grease Lub.)420 min-1
Limiting Speeds(Oil Lub.)570 min-1
Constant E0.26
Axial Load Factors : Y22.55
Axial Load Factors : Y33.80
Axial Load Factors : Y02.50
Da(Max.)398 mm
Da(Max.)498 mm
Da(Min.)464 mm
Sa(Min.)6 mm
Ra(Max.)4 mm
Rb(Max.)5 mm
Mass(Refer.)104 kg

Technical documents & data sheet

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Record identity
KOYO 45268
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