SIFT BEARING STORE CATALOG

7238CNSKPrecision / Angular Contact

7238C is a NSK precision / angular contact bearing, bore 190 mm, O.D. 340 mm, width 55 mm. Dimensions, drawing, interchanges and price.

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Bore d190mm
Outside dia. D340mm
Width B55mm
Dynamic Cr77,200lbs
Static C0r101,000lbs
Limiting speed4,400rpm
Weight22.104kg
Cr / C0r0.76
Mean dia. dm265mm

Original catalogue drawing - NSK catalogue, page 195

7238C NSK Precision / Angular Contact 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. D340 mmBore d190 mmWidth B55 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 diameter1907.4803
DOutside diameter34013.3858
BInner-ring / bearing width552.1654

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)190
Bore d (in)7.4803
Outside dia. D (mm)340
Outside dia. D (in)13.3858
Width B (mm)55
Width B (in)2.1654

Load ratings & speeds

Basic dynamic load rating Cr (lbs)77200
Basic static load rating Cor (lbs)101000
Limiting speed - grease (rpm)4,400
Limiting speed - oil (rpm)6,700

Weight

Weight (kg)22.104

Mounting dimensions (fillets / shoulders)

Fillet ra (in)0.118
Fillet rb (in)0.059
Shaft shoulder da (in)8.189
Housing shoulder Da (in)12.677
Housing shoulder Db (in)13.031

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,400 rpm
485,85164762
657,2342162,571
842,9255126,095
1034,3401,00011,905
1522,8943,37540,179

Basic rating life per ISO 281: L10 = (C/P)3 with C = 343,403 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.197 (dimensions) / p.198 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6238-MFAGBall19034055255 kN22.6
QJ238-N2-MPAFAGBall19034055455 kN23.8
N238-E-M1FAGCylindrical Roller19034055680 kN22.8
NJ238-E-M1FAGCylindrical Roller19034055680 kN23.2
NU238-E-M1FAGCylindrical Roller19034055680 kN22.8
NUP238-E-M1FAGCylindrical Roller19034055680 kN23.5
20238-MBFAGSpherical Roller19034055650 kN22.5
30238FAGTapered Roller19034055530 kN20.8
30238-XLFAGTapered Roller19034055800 kN21.4
B7238-C-T-P4SFAGPrecision / Angular Contact19034055315 kN20

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6238NSKBall1903405557,300 lbs22.153
7238BNSKBall1903405563,700 lbs21.319
238NSKCylindrical Roller19034055124,000 lbs22.226
NU238ENSKCylindrical Roller19034055855 kN23
30238NSKTapered Roller19034055130,000 lbs20.103
HR30238NSKTapered Roller19034055880 kN21.4
7238NSKPrecision / Angular Contact19034055345 kN22.4
7238A5NSKPrecision / Angular Contact1903405573,900 lbs22.303

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
7038A5NSKPrecision / Angular Contact1902904645,000 lbs11.204
7038CNSKPrecision / Angular Contact1902904655,300 lbs11.104
7238NSKPrecision / Angular Contact19034055345 kN22.4
7238A5NSKPrecision / Angular Contact1903405573,900 lbs22.303
7338NSKPrecision / Angular Contact19040078495 kN47.5
7938A5NSKPrecision / Angular Contact1902603331,100 lbs5.121
7938CNSKPrecision / Angular Contact1902603333,100 lbs5.062
NN3038NSKPrecision / Angular Contact19029075133,000 lbs17.663

Request a quotation for 7238C

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.