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SKF / Needle roller bearings

SKF NK 21/16

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
29 mm
WidthB
16 mm
Dynamic load ratingC
13.8 kN
Static load ratingC0
20.4 kN
Limiting speednG
22000 r/min
Mass≈m
0.028 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 diameterD29 mm
WidthB16 mm
Basic dynamic load ratingC13.8 kN
Basic static load ratingC020.4 kN
Fatigue load limitPu2.45 kN
Reference speednref19000 r/min
Limiting speednG22000 r/min
Mass≈m0.028 kg
SealingWithout
CageSheet steel
Bearing materialBearing steel
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter of needle roller complement21.0 mm
Outside diameter29.0 mm
Width16.0 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. 27 mm
Fillet radiusr amax. 0.3 mm
Engineering — Associated seals1 parameter
Engineering — Associated seals
ParameterSymbolValue
Radial shaft seal with a low cross-sectional height, single lipG 21x29x4
Engineering — Calculation data5 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC13.8 kN
Basic static load ratingC 020.4 kN
Fatigue load limitP u2.45 kN
Reference speed19000 r/min
Limiting speed22000 r/min
Engineering — Dimensions4 parameters
Engineering — Dimensions
ParameterSymbolValue
Diameter under rollersF w21 mm
Outside diameterD29 mm
WidthC16 mm
Chamfer dimension outer ringr 1,2min. 0.3 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.028 kg
eClass code23-05-09-03
UNSPSC code31171512
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating13.8 kN
Basic static load rating20.4 kN
Reference speed19000.0 r/min
Limiting speed22000.0 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 ring2
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Indicative carbon footprint for new product0.1 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NK 21/16
Document matching
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