SIFT BEARING STORE CATALOG

20234-MBFAGSpherical Roller

20234-MB is a FAG spherical roller bearing, bore 170 mm, O.D. 310 mm, width 52 mm, dynamic rating 570 kN. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d170mm
Outside dia. D310mm
Width B52mm
Dynamic Cr570kN
Static C0r830kN
Limiting speed2,460rpm
Weight17.9kg
Cr / C0r0.69
Mean dia. dm240mm

Original catalogue drawing - FAG Schaeffler HR 1, page 658

20234-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. D310 mmBore d170 mmWidth B52 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 diameter1706.6929
DOutside diameter31012.2047
BInner-ring / bearing width522.0472
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)170
Outside dia. D (mm)310
Width B (mm)52
Inner-ring shoulder dia. D1 (mm)273.1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)128141
Basic static load rating Cor (lbs)186591
Basic dynamic load rating Cr (N)570000
Basic static load rating C0r (N)830000
Fatigue limit load Cur (N)70000
Limiting speed nG (rpm)2,460

Weight

Weight (kg)17.9

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)4
Shaft shoulder da (mm)187
Housing shoulder Da (mm)293
Housing fillet ra max (mm)3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 800 rpm
4142,5001022,117
695,0003928,177
871,2501,02421,333
1057,0002,15444,884
1538,0008,323173,406

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 570,000 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.658 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6234NSKBall1703105247,700 lbs15.567
7234BNSKBall1703105260,000 lbs17.01
234NSKCylindrical Roller17031052107,000 lbs18.144
NU234ENSKCylindrical Roller17031052740 kN18.3
30234NSKTapered Roller17031052118,000 lbs16.103
HR30234NSKTapered Roller17031052775 kN17.1
7234NSKPrecision / Angular Contact17031052325 kN17.3
7234A5NSKPrecision / Angular Contact1703105268,300 lbs17.205
7234CNSKPrecision / Angular Contact1703105271,700 lbs17.404
30234TimkenTapered Roller17031052680 kN17.1

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6234-MFAGBall17031052225 kN18.3
QJ234-N2-MPAFAGBall17031052420 kN18.6
N234-E-M1FAGCylindrical Roller17031052700 kN18
N234-E-XL-M1FAGCylindrical Roller17031052700 kN18
NJ234-E-M1FAGCylindrical Roller17031052700 kN18.4
NJ234-E-XL-M1FAGCylindrical Roller17031052700 kN18.4
NU234-E-M1FAGCylindrical Roller17031052700 kN18.1
NU234-E-XL-M1FAGCylindrical Roller17031052700 kN18.1

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
22234-E1-XLFAGSpherical Roller170310861320 kN27.8
22234-E1-XL-KFAGSpherical Roller170310861320 kN27.1
22334-BE-XLFAGSpherical Roller1703601201870 kN58.2
22334-BE-XL-JPA-T41AFAGSpherical Roller1703601201870 kN58.2
22334-BE-XL-KFAGSpherical Roller1703601201870 kN56.9
22334-BE-XL-K-JPA-T41AFAGSpherical Roller1703601201870 kN56.9
23034-E1-XL-K-TVPBFAGSpherical Roller17026067880 kN11.9
23034-E1-XL-TVPBFAGSpherical Roller17026067880 kN12.3

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