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KOYO / Single-row / with pressed cage

KOYO 7311B

Angular contact ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
55 mm
Outside diameterD
120 mm
WidthB
29 mm
Dynamic load ratingC
98.4 kN
Static load ratingC0
56.7 kN
Limiting speednG
4000 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 / With pressed cage
Bore diameterd55 mm
Outside diameterD120 mm
WidthB29 mm
Basic dynamic load ratingC98.4 kN
Basic static load ratingC056.7 kN
Fatigue load limitPu3.7 kN
Limiting speednG4000 r/min
Mass≈m1.45 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key020-010-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathAngular contact ball bearings - Single-row - With pressed cage
Official Classification 1Angular contact ball bearings / Single-row / With pressed cage
Technical Data15 parameters
Technical Data
ParameterSymbolValue
d55 mm
D120 mm
B29 mm
R(Min.)2 mm
R1(Min.)1 mm
Basic Load Ratings : Cr98.4 kN
Basic Load Ratings : C0R56.7 kN
Fatigue Load Limit : Cu3.70 kN
Limiting Speeds(Grease Lub.)4000 min-1
Limiting Speeds(Oil Lub.)5300 min-1
Load Center Spread : A51.8 mm
Da(Min.)65 mm
Da(Max.)110 mm
Ra(Max.)2 mm
Mass(Refer.)1.45 kg

Technical documents & data sheet

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Record identity
KOYO 7311B
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