SIFT BEARING STORE CATALOG

2308NSKBall

2308 is a NSK ball bearing, bore 40 mm, O.D. 90 mm, width 33 mm, dynamic rating 10,100 lbs. Dimensions, drawing, interchanges and price.

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Bore d40mm
Outside dia. D90mm
Width B33mm
Dynamic Cr10,100lbs
Static C0r3,960lbs
Limiting speed6,700rpm
Weight0.998kg
Cr / C0r2.55
Mean dia. dm65mm

Original catalogue drawing - NSK catalogue, page 29

2308 NSK Ball bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D90 mmBore d40 mmWidth B33 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter401.5748
DOutside diameter903.5433
BInner-ring / bearing width331.2992
rChamfer (min)1.4990.059

Notes

Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)40
Bore d (in)1.5748
Outside dia. D (mm)90
Outside dia. D (in)3.5433
Width B (mm)33
Width B (in)1.2992

Load ratings & speeds

Basic dynamic load rating Cr (lbs)10100
Basic static load rating Cor (lbs)3960
Limiting speed - grease (rpm)6,700
Limiting speed - oil (rpm)8,000

Weight

Weight (kg)0.998

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.059
Shaft shoulder da min (in)1.891
Housing shoulder Da max (in)3.231

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,200 rpm
411,23264485
67,4882161,636
85,6165123,879
104,4931,0007,576
152,9953,37525,568

Basic rating life per ISO 281: L10 = (C/P)3 with C = 44,927 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK inch product catalogue
Catalogue pagep.31 (dimensions) / p.32 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
2308-2RS-TVHFAGBall40903330 kN1.01
2308-K-TVH-C3FAGBall40903346 kN0.899
2308-TVHFAGBall40903346 kN0.922
4308-B-TVHFAGBall40903367 kN0.83
62308-2RSRFAGBall40903346.5 kN0.882
NJ2308-E-TVP2FAGCylindrical Roller409033132 kN0.978
NJ2308-E-XL-TVP2FAGCylindrical Roller409033132 kN0.978
NU2308-E-TVP2FAGCylindrical Roller409033132 kN0.958
NU2308-E-XL-TVP2FAGCylindrical Roller409033132 kN0.958
NUP2308-E-TVP2FAGCylindrical Roller409033132 kN0.999

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
2308NSKCylindrical Roller40903318,500 lbs0.943
NU2308ENSKCylindrical Roller409033140 kN0.933
22308CAME4NSKSpherical Roller40903327,400 lbs0.984
22308EAE4NSKSpherical Roller40903330,642 lbs1.016
22308HE4NSKSpherical Roller40903330,500 lbs0.948
HR32308NSKTapered Roller409033147 kN1.05
HR32308CNSKTapered Roller40903324,100 lbs1.03
HR32308JNSKTapered Roller40903327,000 lbs1.052

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
2308NSKCylindrical Roller40903318,500 lbs0.943

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
1208NSKBall4080184,340 lbs0.417
1308NSKBall4090236,520 lbs0.744
16008NSKBall4068913.9 kN0.13
2208NSKBall4080237,080 lbs0.49
3208JNSKBall408030.29,290 lbs0.653
3308JNSKBall409036.513,100 lbs1.066
5208JNSKBall408030.29,930 lbs0.572
5208TNGNSKBall408030.210,800 lbs0.549

Request a quotation for 2308

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