99,016 bearing records · search, filter and compare

SKF / Needle roller bearings

SKF NA 4908 RS

Single row needle roller bearing with machined rings, with flanges and integral sealing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
40 mm
Outside diameterD
62 mm
WidthB
23 mm
Dynamic load ratingC
42.5 kN
Static load ratingC0
58.5 kN
Limiting speednG
4000 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 specifications15 parameters
Core specifications
ParameterSymbolValue
Variant / constructionNeedle roller bearings
Bore diameterd40 mm
Outside diameterD62 mm
WidthB23 mm
Basic dynamic load ratingC42.5 kN
Basic static load ratingC058.5 kN
Fatigue load limitPu7.35 kN
Reference speednref8000 r/min
Limiting speednG4000 r/min
Mass≈m0.252 kg
Internal clearanceCN
SealingSeal on one side
CageSheet metal
Bearing materialBearing steel
LubricantGrease
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter40.0 mm
Outside diameter62.0 mm
Width23.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryNeedle roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/needle-roller-bearings/needle-roller-bearings-with-machined-rings
Structure group IDBN1_003
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions3 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Smallest permissible abutment diameter shaft, bearings with flangesd amin. 44 mm
Diameter of housing abutmentD amax. 58 mm
Fillet radiusr amax. 0.6 mm
Engineering — Calculation data6 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC42.5 kN
Basic static load ratingC 058.5 kN
Fatigue load limitP u7.35 kN
Reference speed8000 r/min
Limiting speed4000 r/min
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd40 mm
Outside diameterD62 mm
WidthB23 mm
Width outer ringC22 mm
Raceway diameter inner ringF48 mm
Chamfer dimension outer ringr 1,2min. 0.6 mm
Permissible axial displacement from the normal position of one bearing ring relative to the othersmax. 0.5 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.252 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating42.5 kN
Basic static load rating58.5 kN
Reference speed8000.0 r/min
Limiting speed4000.0 r/min
SKF performance classSKF Explorer
Properties15 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Number of rows1
Outer ring typeMachined (solid)
Aligning featureWithout
CageSheet metal
Number of flanges, outer ring2
Radial internal clearanceCN
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingSeal on one side
Sealing typeContact
LubricantGrease
Relubrication featureWith
Indicative carbon footprint for new product0.93 kg CO 2 e

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 NA 4908 RS
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