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SKF / Inner rings

SKF IR 45X55X20 IS1

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

Technical data available
Bore diameterd
45 mm
Outside diameterD
55 mm
WidthB
20 mm
Mass≈m
0.117 kg
Bore diameter
45.0 mm
Outside diameter
55.0 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 diameterd45 mm
Outside diameterD55 mm
WidthB20 mm
Mass≈m0.117 kg
Internal clearanceCN
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter45.0 mm
Outside diameter55.0 mm
Width20.0 mm
Raceway diameter55.0 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 diameterd45 mm
Raceway diameterF55 mm
WidthB20 mm
Chamfer dimension inner ringr, r 1,2min. 1 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.117 kg
eClass code23-05-09-03
UNSPSC code31171512
Properties6 parameters
Properties
ParameterSymbolValue
Special raceway featureNone
Radial internal clearanceCN
Tolerance classNormal
MaterialBearing steel
CoatingWithout
Relubrication featureWith

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 45X55X20 IS1
Document matching
Exact designation, assembly scope, revision and units must agree.

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