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SKF / Needle roller bearings

SKF NA 4905 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
25 mm
Outside diameterD
42 mm
WidthB
18 mm
Dynamic load ratingC
24.5 kN
Static load ratingC0
27.5 kN
Limiting speednG
6300 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 diameterd25 mm
Outside diameterD42 mm
WidthB18 mm
Basic dynamic load ratingC24.5 kN
Basic static load ratingC027.5 kN
Fatigue load limitPu3.4 kN
Reference speednref13000 r/min
Limiting speednG6300 r/min
Mass≈m0.09 kg
Internal clearanceCN
SealingSeal on one side
CageSheet metal
Bearing materialBearing steel
LubricantGrease
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter25.0 mm
Outside diameter42.0 mm
Width18.0 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. 27 mm
Diameter of housing abutmentD amax. 40 mm
Fillet radiusr amax. 0.3 mm
Engineering — Calculation data6 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC24.5 kN
Basic static load ratingC 027.5 kN
Fatigue load limitP u3.4 kN
Reference speed13000 r/min
Limiting speed6300 r/min
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd25 mm
Outside diameterD42 mm
WidthB18 mm
Width outer ringC17 mm
Raceway diameter inner ringF30 mm
Chamfer dimension outer ringr 1,2min. 0.3 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 weight0.09 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating24.5 kN
Basic static load rating27.5 kN
Reference speed13000.0 r/min
Limiting speed6300.0 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 product0.33 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NA 4905 RS
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