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SKF / Needle roller bearings

SKF K 55X63X25

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

Technical data available
Outside diameterD
63 mm
WidthB
25 mm
Dynamic load ratingC
49.5 kN
Static load ratingC0
104 kN
Limiting speednG
8500 r/min
Mass≈m
0.0788 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 diameterD63 mm
WidthB25 mm
Basic dynamic load ratingC49.5 kN
Basic static load ratingC0104 kN
Fatigue load limitPu12.9 kN
Reference speednref7500 r/min
Limiting speednG8500 r/min
Mass≈m0.0788 kg
SealingWithout
CageSheet steel
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter of needle roller complement55.0 mm
Outside diameter63.0 mm
Outside diameter of needle roller complement63.0 mm
Width25.0 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 — Associated products1 parameter
Engineering — Associated products
ParameterSymbolValue
Designation associated G design radial shaft seal with a low cross-sectional heightG 55x63x5
Engineering — Calculation data5 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC49.5 kN
Basic static load ratingC 0104 kN
Fatigue load limitP u12.9 kN
Reference speed7500 r/min
Limiting speed8500 r/min
Engineering — Dimensions3 parameters
Engineering — Dimensions
ParameterSymbolValue
Diameter under rollersF w55 mm
Outside diameter roller complementE w63 mm
Width needle roller and cage assemblyU25 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.0788 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating49.5 kN
Basic static load rating104.0 kN
Reference speed7500.0 r/min
Limiting speed8500.0 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 product0.29 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF K 55X63X25
Document matching
Exact designation, assembly scope, revision and units must agree.

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