SIFT BEARING STORE CATALOG

238/750-B-MBFAGSpherical Roller

238/750-B-MB is a FAG spherical roller bearing, bore 750 mm, O.D. 920 mm, width 128 mm. Dimensions, drawing, interchanges and price.

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Bore d750mm
Outside dia. D920mm
Width B128mm
Dynamic Cr3000kN
Static C0r8700kN
Limiting speed720rpm
Weight186kg
Cr / C0r0.34
Mean dia. dm835mm

Original catalogue drawing - FAG Schaeffler HR 1, page 742

238/750-B-MB FAG Spherical Roller 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. D920 mmBore d750 mmWidth B128 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 diameter75029.5276
DOutside diameter92036.2205
BInner-ring / bearing width1285.0394
rChamfer (min)50.1969

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)750
Outside dia. D (mm)920
Width B (mm)128
Inner-ring shoulder dia. D1 (mm)872.1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)674427
Basic static load rating Cor (lbs)1955838
Basic dynamic load rating Cr (N)3e+06
Basic static load rating C0r (N)8.7e+06
Fatigue limit load Cur (N)600000
Factor e0.12
Factor Y05.49
Limiting speed nG (rpm)720
Reference speed nB (rpm)330

Weight

Weight (kg)186.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)5
Shaft shoulder da (mm)768
Housing shoulder Da (mm)902
Housing fillet ra max (mm)4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 200 rpm
4750,0001028,466
6500,00039232,708
8375,0001,02485,333
10300,0002,154179,536
15200,0008,323693,622

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 3,000,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandFAG
Source catalogueFAG / Schaeffler Rolling Bearings HR 1
Catalogue pagep.742 (dimensions)

Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
238/750-B-K-MBFAGSpherical Roller7509201283000 kN180

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
238/1000-K-MBFAGSpherical Roller100012201654900 kN399
238/1000-MBFAGSpherical Roller100012201654900 kN413
238/1060-B-K-MBFAGSpherical Roller106012801655100 kN421
238/1060-B-MBFAGSpherical Roller106012801655100 kN435
238/1180-B-K-MBFAGSpherical Roller118014201806000 kN556
238/1180-B-MBFAGSpherical Roller118014201806000 kN576
238/600-K-MBFAGSpherical Roller600730981960 kN84
238/600-MBFAGSpherical Roller600730981960 kN87

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
230/750-K-MBFAGSpherical Roller75010902508500 kN786
230/750-MBFAGSpherical Roller75010902508500 kN806
231/750-B-K-MBFAGSpherical Roller750122036514100 kN1700
231/750-B-MBFAGSpherical Roller750122036514100 kN1754
232/750-B-K-MBFAGSpherical Roller750136047519300 kN3087
232/750-B-MBFAGSpherical Roller750136047519300 kN3136
239/750-K-MBFAGSpherical Roller75010001855200 kN394
239/750-MBFAGSpherical Roller75010001855200 kN426

Request a quotation for 238/750-B-MB

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.

Online enquiry formrichard@bearingsfit.com