SIFT BEARING STORE CATALOG

7240BNSKBall

7240B is a NSK ball bearing, bore 200 mm, O.D. 360 mm, width 58 mm, dynamic rating 68,300 lbs. Dimensions, drawing, interchanges and price.

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Bore d200mm
Outside dia. D360mm
Width B58mm
Dynamic Cr68,300lbs
Static C0r91,500lbs
Limiting speed1,300rpm
Weight25.31kg
Cr / C0r0.75
Mean dia. dm280mm

Original catalogue drawing - NSK catalogue, page 37

7240B 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. D360 mmBore d200 mmWidth B58 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 diameter2007.874
DOutside diameter36014.1732
BInner-ring / bearing width582.2835
rChamfer (min)2.9970.118

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)200
Bore d (in)7.8740
Outside dia. D (mm)360
Outside dia. D (in)14.1732
Width B (mm)58
Width B (in)2.2835

Load ratings & speeds

Basic dynamic load rating Cr (lbs)68300
Basic static load rating Cor (lbs)91500
Limiting speed - grease (rpm)1,300
Limiting speed - oil (rpm)1,800

Weight

Weight (kg)25.31

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.118
Shaft shoulder da min (in)8.583
Housing shoulder Da max (in)13.465

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 400 rpm
475,953642,667
650,6362169,000
837,97751221,333
1030,3811,00041,667
1520,2543,375140,625

Basic rating life per ISO 281: L10 = (C/P)3 with C = 303,814 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.39 (dimensions) / p.40 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6240-MFAGBall20036058270 kN27
QJ240-N2-MPAFAGBall20036058510 kN28
N240-E-M1FAGCylindrical Roller20036058750 kN27.2
NJ240-E-M1FAGCylindrical Roller20036058750 kN27.5
NU240-E-M1FAGCylindrical Roller20036058750 kN27.2
NUP240-E-M1FAGCylindrical Roller20036058750 kN28
20240-MBFAGSpherical Roller20036058730 kN26.7
30240-AFAGTapered Roller20036058770 kN25.5
30240-XLFAGTapered Roller20036058900 kN25.3
B7240-C-T-P4SFAGPrecision / Angular Contact20036058325 kN24.1

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6240NSKBall20036058296 kN26.7
240NSKCylindrical Roller20036058140,000 lbs26.308
NU240ENSKCylindrical Roller20036058945 kN27.4
30240NSKTapered Roller20036058145,000 lbs23.805
HR30240NSKTapered Roller20036058975 kN25.5
7240NSKPrecision / Angular Contact20036058370 kN26.5
7240A5NSKPrecision / Angular Contact2003605878,300 lbs26.404
7240CNSKPrecision / Angular Contact2003605882,700 lbs26.204

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
16040NSKBall20031034177 kN10
6040NSKBall2003105146,500 lbs14.061
6240NSKBall20036058296 kN26.7
6340NSKBall2004208085,300 lbs57.606
6840NSKBall2002502416,600 lbs2.654
6940NSKBall2002803832,100 lbs7.176
7340BNSKBall2004208097,000 lbs53.07

Request a quotation for 7240B

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.