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Cross-brand designation analysis

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You entered NK28-20-XL-2S. This table explores the base group NK28; it does not preserve or approve every requested suffix. Search your complete marking first →

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One base designation across loaded brands

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Data incomplete

“NK28” across 3 loaded brands

The base designation is shared, but too few brands have complete boundary dimensions. Use Custom Compare when you want to choose exact suffix variants yourself.

Technical comparison

Brand differences at a glance

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ParameterSKFNK 28/20Single row needle roller bearing with machined rings, with flanges, without inner ringINANK28/20-XL28 × 37 × 20 mmKOYONK28/20Needle roller bearings
Comparable specifications
BrandSKFINAKOYO
DesignationNK 28/20NK28/20-XLNK28/20
Product familyNeedle roller bearings—Heavy-duty needle roller bearings / Metric series, caged, without inner ring
Detailed typeSingle row needle roller bearing with machined rings, with flanges, without inner ringNeedle roller bearingsNeedle roller bearings
Series—NK28/20—
Bore diameterd—28 mm—
Outside diameterD37 mm37 mm37 mm
WidthB20 mm20 mm—
Basic dynamic load ratingC22 kN24.8 kN22.6 kN
Basic static load ratingC036.5 kN34 kN34.4 kN
Fatigue load limitPu4.55 kN6 kN5.5 kN
Reference speednref14000 r/min9300 r/min—
Limiting speednG16000 r/min15800 r/min10000 r/min
Mass≈m0.052 kg0.05177 kg0.057 kg
SealingWithout——
CageSheet steel——
Bearing materialBearing steel——
LubricantNone——
Minimum operating temperatureTmin—-30 °C—
Maximum operating temperatureTmax—120 °C—
Classification
Official Category Path——Needle roller bearings - Heavy-duty needle roller bearings - Metric series, caged, without inner ring
Official Classification 1——Needle roller bearings / Heavy-duty needle roller bearings / Metric series, caged, without inner ring
Dimensions
Bore diameter of needle roller complement28.0 mm——
Engineering — Abutment dimensions
Diameter of housing abutmentD amax. 35 mm——
Fillet radiusr amax. 0.3 mm——
Engineering — Associated seals
Radial shaft seal with a low cross-sectional height, single lipG 28x37x4——
Engineering — Dimensions
Diameter under rollersF w28 mm——
Chamfer dimension outer ringr 1,2min. 0.3 mm——
Logistics
Product net weight0.052 kg——
eClass code23-05-09-03——
UNSPSC code31171512——
Manufacturer Identity
Schaeffler Product Code—382952—
Official Class Key——090-030-010
Base Type—NK28/20—
Old Designation—["NK28/20"]—
Gpsd Group—I01—
Product Line Id—09—
X Life Marking—XL—
Product identity
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——
Product Identity
Construction—Needle roller bearings NK, light series—
Short Description—Needle roller bearing—
Properties
Bearing partBearing without inner ring——
Number of rows1——
Outer ring typeMachined (solid)——
Aligning featureWithout——
Number of flanges, outer ring2——
Tolerance classNormal——
Material, bearingBearing steel——
CoatingWithout——
Relubrication featureWith——
Indicative carbon footprint for new product0.19 kg CO 2 e——
Technical Data
Fw——28 mm
D——37 mm
C——20 mm
R(Min.)——0.3 mm
Basic Load Ratings : Cr——22.6 kN
Basic Load Ratings : C0R——34.4 kN
Under Roller Diameter (Fw)—28 mm—
Fatigue Load Limit : Cu——5.50 kN
Outside Diamater (D)—37 mm—
Limiting Speeds(Grease Lub.)——10000 min-1
Width, Outer Ring (C)—20 mm—
Limiting Speeds(Oil Lub.)——16000 min-1
Basic Dynamic Load Rating, Radial (Cr)—24,800 N—
(Refer.)Mass——0.057? kg
Basic Static Load Rating, Radial (C0R)—34,000 N—
Mass(Refer.)——0.057? kg
Operating Temperature Min. (Tmin)—-30 °C—
Operating Temperature Max. (Tmax)—120 °C—
Limiting Speed (Limiting Spe)—15,800 1/min—
Reference Speed (Nϑr)—9,300 1/min—
Minimum Chamfer Dimension (Rmin)—0.3 mm—
Fatigue Load Limit, Radial (Cur)—6,000 N—

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