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SKF / Inner rings

SKF IR 20X25X38.5

Inner ring for needle roller bearings, ir series technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
20 mm
Outside diameterD
25 mm
WidthB
38.5 mm
Mass≈m
0.053 kg
Bore diameter
20.0 mm
Outside diameter
25.0 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 specifications6 parameters
Core specifications
ParameterSymbolValue
Variant / constructionInner rings
Bore diameterd20 mm
Outside diameterD25 mm
WidthB38.5 mm
Mass≈m0.053 kg
Internal clearanceCN
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter20.0 mm
Outside diameter25.0 mm
Width38.5 mm
Raceway diameter25.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryInner rings
Official taxonomy path/products/rolling-bearings/roller-bearings/needle-roller-bearings/needle-roller-bearing-components
Structure group IDBN1_006
Available from SKFYes
RemanufacturableNo
Engineering — Dimensions4 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd20 mm
Raceway diameterF25 mm
WidthB38.5 mm
Chamfer dimension inner ringr, r 1,2min. 0.3 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.053 kg
eClass code23-05-09-03
UNSPSC code31171512
Properties6 parameters
Properties
ParameterSymbolValue
Special raceway featureNone
Radial internal clearanceCN
Tolerance classNormal
MaterialBearing steel
CoatingWithout
Relubrication featureWithout

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
SKF IR 20X25X38.5
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.

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