99,016 bearing records · search, filter and compare

KOYO / Double-row / open

KOYO 3221

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

Technical data available
Bore diameterd
105 mm
Outside diameterD
190 mm
WidthB
65.1 mm
Dynamic load ratingC
227 kN
Static load ratingC0
237 kN
Limiting speednG
2000 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 specifications10 parameters
Core specifications
ParameterSymbolValue
Variant / constructionDouble-row / Open
Bore diameterd105 mm
Outside diameterD190 mm
WidthB65.1 mm
Basic dynamic load ratingC227 kN
Basic static load ratingC0237 kN
Fatigue load limitPu11.5 kN
Limiting speednG2000 r/min
Mass≈m7.37 kg
SealingOpen
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key020-030-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathAngular contact ball bearings - Double-row - Open
Official Classification 1Angular contact ball bearings / Double-row / Open
Technical Data15 parameters
Technical Data
ParameterSymbolValue
d105 mm
D190 mm
B65.1 mm
R(Min.)2.1 mm
Basic Load Ratings : Cr227 kN
Basic Load Ratings : C0R237 kN
Fatigue Load Limit : Cu11.5 kN
Limiting Speeds(Grease Lub.)2000 min-1
Limiting Speeds(Oil Lub.)2600 min-1
Load Center Spread : A124.2 mm
Da(Min.)117 mm
Da(Max.)- mm
Da(Max.)178 mm
Ra(Max.)2 mm
Mass(Refer.)7.37 kg

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity
KOYO 3221
Document matching
Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

Look up another model or check drawing requirements →

Search the consolidated catalogue

Find, filter and compare bearing model data in one place.

Open model search