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SKF / Needle roller bearings

SKF RNAO 55X68X20

Single row needle roller bearing with machined rings, without flanges and inner ring technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Outside diameterD
68 mm
WidthB
20 mm
Dynamic load ratingC
27 kN
Static load ratingC0
67 kN
Limiting speednG
8500 r/min
Mass≈m
0.166 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 diameterD68 mm
WidthB20 mm
Basic dynamic load ratingC27 kN
Basic static load ratingC067 kN
Fatigue load limitPu8.15 kN
Reference speednref7500 r/min
Limiting speednG8500 r/min
Mass≈m0.166 kg
SealingWithout
CageSheet steel
Bearing materialBearing steel
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter of needle roller complement55.0 mm
Outside diameter68.0 mm
Width20.0 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_002
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions4 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Smallest permissible abutment diameter shaft, bearings without flangesd a59.2 mm
Diameter of housing abutmentD a60.8 mm
Smallest permissible abutment diameter housing, bearings without flangesD b55.8 mm
Fillet radiusr amax. 0.6 mm
Engineering — Calculation data5 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC27 kN
Basic static load ratingC 067 kN
Fatigue load limitP u8.15 kN
Reference speed7500 r/min
Limiting speed8500 r/min
Engineering — Dimensions5 parameters
Engineering — Dimensions
ParameterSymbolValue
Diameter under rollersF w55 mm
Outside diameterD68 mm
WidthC20 mm
Raceway diameter outer ringE60 mm
Chamfer dimension outer ringr 1,2min. 0.6 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.166 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating27.0 kN
Basic static load rating67.0 kN
Reference speed7500.0 r/min
Limiting speed8500.0 r/min
Properties13 parameters
Properties
ParameterSymbolValue
Bearing partBearing without inner ring
Number of rows1
Outer ring typeMachined (solid)
Aligning featureWithout
CageSheet steel
Number of flanges, outer ring0
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product0.61 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF RNAO 55X68X20
Document matching
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