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KOYO / Single direction / with flat back faces

KOYO 51128

Axial deep groove ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
140 mm
Outside diameterD
180 mm
WidthB
31 mm
Limiting speednG
1200 r/min
Mass≈m
2.02 kg
d
140 mm

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 specifications7 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSingle direction / With flat back faces
Bore diameterd140 mm
Outside diameterD180 mm
WidthB31 mm
Fatigue load limitPu13.5 kN
Limiting speednG1200 r/min
Mass≈m2.02 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key070-010-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathThrust ball bearings - Single direction - With flat back faces
Official Classification 1Thrust ball bearings / Single direction / With flat back faces
Technical Data20 parameters
Technical Data
ParameterSymbolValue
d140 mm
D180 mm
T31 mm
R(Min.)1 mm
Basic Load Ratings Ca133 kN
Basic Load Ratings C0A375 kN
Fatigue Load Limit : Cu13.5 kN
Limiting Speeds(Grease Lub.)1200 min-1
Limiting Speeds(Oil Lub.)1900 min-1
D1(Max.)178 mm
D1(Min.)142 mm
D2- mm
D3- mm
A- mm
R- mm
C- mm
Da(Min.)164 mm
Da(Max.)156 mm
Ra(Max.)1 mm
Mass(Refer.)2.02 kg

Technical documents & data sheet

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Record identity
KOYO 51128
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