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SKF / Needle roller bearings

SKF K 21X25X13

Single row needle roller and cage assembly technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Outside diameterD
25 mm
WidthB
13 mm
Dynamic load ratingC
9.68 kN
Static load ratingC0
15.3 kN
Limiting speednG
22000 r/min
Mass≈m
0.009 kg

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 specifications13 parameters
Core specifications
ParameterSymbolValue
Variant / constructionNeedle roller bearings
Outside diameterD25 mm
WidthB13 mm
Basic dynamic load ratingC9.68 kN
Basic static load ratingC015.3 kN
Fatigue load limitPu1.76 kN
Reference speednref19000 r/min
Limiting speednG22000 r/min
Mass≈m0.009 kg
SealingWithout
CageSheet steel
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter of needle roller complement21.0 mm
Outside diameter25.0 mm
Outside diameter of needle roller complement25.0 mm
Width13.0 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-and-cage-assemblies
Structure group IDBN1_001
Available from SKFYes
RemanufacturableNo
Engineering — Calculation data5 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC9.68 kN
Basic static load ratingC 015.3 kN
Fatigue load limitP u1.76 kN
Reference speed19000 r/min
Limiting speed22000 r/min
Engineering — Dimensions3 parameters
Engineering — Dimensions
ParameterSymbolValue
Diameter under rollersF w21 mm
Outside diameter roller complementE w25 mm
Width needle roller and cage assemblyU13 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.009 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating9.68 kN
Basic static load rating15.3 kN
Reference speed19000.0 r/min
Limiting speed22000.0 r/min
Properties12 parameters
Properties
ParameterSymbolValue
Bearing partNeedle roller and cage assembly
Number of rows1
Outer ring typeNot applicable
Aligning featureWithout
CageSheet steel
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product0.03 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF K 21X25X13
Document matching
Exact designation, assembly scope, revision and units must agree.

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