SIFT BEARING STORE CATALOG

20328-MBFAGSpherical Roller

20328-MB is a FAG spherical roller bearing, bore 140 mm, O.D. 300 mm, width 62 mm, dynamic rating 650 kN. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d140mm
Outside dia. D300mm
Width B62mm
Dynamic Cr650kN
Static C0r840kN
Limiting speed2,370rpm
Weight22.5kg
Cr / C0r0.77
Mean dia. dm220mm

Original catalogue drawing - FAG Schaeffler HR 1, page 656

20328-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. D300 mmBore d140 mmWidth B62 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 diameter1405.5118
DOutside diameter30011.811
BInner-ring / bearing width622.4409
rChamfer (min)40.1575

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)140
Outside dia. D (mm)300
Width B (mm)62
Inner-ring shoulder dia. D1 (mm)257.9

Load ratings & speeds

Basic dynamic load rating Cr (lbs)146126
Basic static load rating Cor (lbs)188840
Basic dynamic load rating Cr (N)650000
Basic static load rating C0r (N)840000
Fatigue limit load Cur (N)66000
Limiting speed nG (rpm)2,370

Weight

Weight (kg)22.5

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)4
Shaft shoulder da (mm)157
Housing shoulder Da (mm)283
Housing fillet ra max (mm)3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 700 rpm
4162,5001022,419
6108,3333929,345
881,2501,02424,381
1065,0002,15451,296
1543,3338,323198,178

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 650,000 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.656 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6328NSKBall1403006256,800 lbs21.999
7328BNSKBall1403006262,000 lbs21.273
328NSKCylindrical Roller14030062123,000 lbs19.051
NU328ENSKCylindrical Roller14030062815 kN22.8
30328NSKTapered Roller14030062135,000 lbs20.103
HR30328NSKTapered Roller14030062910 kN21.1
HR31328JNSKTapered Roller14030062124,800 lbs23.224
7328NSKPrecision / Angular Contact14030062330 kN21.4

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6328-MFAGBall14030062270 kN21.767
QJ328-N2-MPAFAGBall14030062470 kN23.2
N328-E-M1FAGCylindrical Roller14030062790 kN22.5
N328-E-XL-M1FAGCylindrical Roller14030062790 kN22.5
NJ328-E-TVP2FAGCylindrical Roller14030062790 kN20.5
NJ328-E-XL-TVP2FAGCylindrical Roller14030062790 kN20.5
NU328-E-TVP2FAGCylindrical Roller14030062790 kN20.1
NU328-E-XL-TVP2FAGCylindrical Roller14030062790 kN20.1

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
20228-K-MB-C3FAGSpherical Roller14025042395 kN8.98
20228-MBFAGSpherical Roller14025042395 kN9.09
22228-E1-XLFAGSpherical Roller14025068870 kN14.1
22228-E1-XL-KFAGSpherical Roller14025068870 kN13.7
22328-E1-XLFAGSpherical Roller1403001021460 kN34.6
22328-E1-XL-KFAGSpherical Roller1403001021460 kN34.4
22328-E1-XL-K-T41AFAGSpherical Roller1403001021460 kN34.4
22328-E1-XL-T41DFAGSpherical Roller1403001021460 kN34.6

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