99,016 bearing records · search, filter and compare

KOYO / Single-row / inch series

KOYO 1280/20

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

Technical data available
Bore diameterd
22.225 mm
Outside diameterD
57.15 mm
WidthB
22.225 mm
Dynamic load ratingC
65.8 kN
Static load ratingC0
55.7 kN
Limiting speednG
7600 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 / Inch series
Bore diameterd22.225 mm
Outside diameterD57.15 mm
WidthB22.225 mm
Basic dynamic load ratingC65.8 kN
Basic static load ratingC055.7 kN
Fatigue load limitPu8.05 kN
Limiting speednG7600 r/min
Mass≈m0.294 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Inch series
Official Classification 1Tapered roller bearings / Single-row / Inch series
Technical Data23 parameters
Technical Data
ParameterSymbolValue
d22.225 mm
D57.150 mm
T22.225 mm
B22.225 mm
C17.462 mm
R(Min.)0.8 mm
R1(Min.)1.6 mm
Basic Load Ratings : Cr65.8 kN
Basic Load Ratings : C0R55.7 kN
Fatigue Load Limit : Cu8.05 kN
Limiting Speeds(Grease Lub.)7600 min-1
Limiting Speeds(Oil Lub.)10000 min-1
Load Center Spread : A15.3 mm
Constant :E0.35
Axial Load Factors : Y11.73
Axial Load Factors : Y00.95
Da29.5 mm
Db29.0 mm
Da49.0 mm
Db52.0 mm
Ra(Max.)0.8 mm
Rb(Max.)1.6 mm
Mass(Refer.)0.294 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 1280/20
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