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SKF / Needle roller bearings

SKF RNA 6904

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

Technical data available
Outside diameterD
37 mm
WidthB
30 mm
Dynamic load ratingC
40.5 kN
Static load ratingC0
53 kN
Limiting speednG
17000 r/min
Mass≈m
0.0966 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 diameterD37 mm
WidthB30 mm
Basic dynamic load ratingC40.5 kN
Basic static load ratingC053 kN
Fatigue load limitPu6.7 kN
Reference speednref15000 r/min
Limiting speednG17000 r/min
Mass≈m0.0966 kg
SealingWithout
CageSheet steel
Bearing materialBearing steel
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter of needle roller complement25.0 mm
Outside diameter37.0 mm
Width30.0 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 dimensions2 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of housing abutmentD amax. 35 mm
Fillet radiusr amax. 0.3 mm
Engineering — Associated seals1 parameter
Engineering — Associated seals
ParameterSymbolValue
Radial shaft seal25x37x5 HMS5 RG
Engineering — Calculation data6 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC40.5 kN
Basic static load ratingC 053 kN
Fatigue load limitP u6.7 kN
Reference speed15000 r/min
Limiting speed17000 r/min
Engineering — Dimensions4 parameters
Engineering — Dimensions
ParameterSymbolValue
Diameter under rollersF w25 mm
Outside diameterD37 mm
WidthC30 mm
Chamfer dimension outer ringr 1,2min. 0.3 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.0966 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating40.5 kN
Basic static load rating53.0 kN
Reference speed15000.0 r/min
Limiting speed17000.0 r/min
SKF performance classSKF Explorer
Properties13 parameters
Properties
ParameterSymbolValue
Bearing partBearing without inner ring
Number of rows1
Outer ring typeMachined (solid)
Aligning featureWithout
CageSheet steel
Number of flanges, outer ring2
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Indicative carbon footprint for new product0.36 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF RNA 6904
Document matching
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