99,016 bearing records · search, filter and compare

KOYO / Matched pair / back-to-back / with machined cage

KOYO 7221BDB FY

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
72 mm
Dynamic load ratingC
275 kN
Static load ratingC0
241 kN
Limiting speednG
2300 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 / constructionMatched pair / Back-to-back / With machined cage
Bore diameterd105 mm
Outside diameterD190 mm
WidthB72 mm
Basic dynamic load ratingC275 kN
Basic static load ratingC0241 kN
Fatigue load limitPu11.6 kN
Limiting speednG2300 r/min
Mass≈m7.9 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key020-020-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathAngular contact ball bearings - Matched pair - Back-to-back - With machined cage
Official Classification 1Angular contact ball bearings / Matched pair / Back-to-back / With machined cage
Technical Data16 parameters
Technical Data
ParameterSymbolValue
d105 mm
D190 mm
B72 mm
R(Min.)2.1 mm
R1(Min.)1.1 mm
Basic Load Ratings : Cr275 kN
Basic Load Ratings : C0R241 kN
Fatigue Load Limit : Cu11.6 kN
Limiting Speeds(Grease Lub.)2300 min-1
Limiting Speeds(Oil Lub.)3100 min-1
Load Center Spread : A161.0 mm
Da(Min.)117 mm
Db(Max.)183 mm
Ra(Max.)2 mm
Rb(Max.)1 mm
Mass(Refer.)7.90 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 7221BDB FY
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