99,016 bearing records · search, filter and compare

KOYO / Withdrawal sleeves

KOYO 21312RZK+AHX312

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

Technical data available
Bore diameterd
60 mm
Outside diameterD
130 mm
WidthB
31 mm
Dynamic load ratingC
210 kN
Static load ratingC0
193 kN
Limiting speednG
3900 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 specifications8 parameters
Core specifications
ParameterSymbolValue
Variant / constructionWithdrawal sleeves
Bore diameterd60 mm
Outside diameterD130 mm
WidthB31 mm
Basic dynamic load ratingC210 kN
Basic static load ratingC0193 kN
Limiting speednG3900 r/min
Mass≈m2.27 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key060-030-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathSpherical roller bearings - Withdrawal sleeves
Official Classification 1Spherical roller bearings / Withdrawal sleeves
Technical Data18 parameters
Technical Data
ParameterSymbolValue
D155 mm
B140 mm
B243 mm
GM65�2 mm
G18 mm
d60 mm
D130 mm
B31 mm
R(Min.)2.1 mm
Basic Load Ratings : Cr210 kN
Basic Load Ratings : C0R193 kN
Limiting Speeds(Grease Lub.)3900 min-1
Limiting Speeds(Oil Lub.)5100 min-1
Constant E0.24
Axial Load Factors : Y12.78
Axial Load Factors : Y24.14
Axial Load Factors : Y02.72
Mass(Refer.)2.27 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 21312RZK+AHX312
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