SIFT BEARING STORE CATALOG

QJ234-N2-MPAFAGBall

QJ234-N2-MPA is a FAG ball bearing, bore 170 mm, O.D. 310 mm, width 52 mm, dynamic rating 420 kN. Dimensions, drawing, interchanges and price.

Brass cage
Request a quoteEmail usSearch the catalog
Bore d170mm
Outside dia. D310mm
Width B52mm
Dynamic Cr420kN
Static C0r630kN
Limiting speed3,750rpm
Weight18.6kg
Cr / C0r0.67
Mean dia. dm240mm

Original catalogue drawing - FAG Schaeffler HR 1, page 364

QJ234-N2-MPA FAG 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. 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 OD d1 (mm)221.5
Inner-ring shoulder dia. D1 (mm)260.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)94420
Basic static load rating Cor (lbs)141630
Basic dynamic load rating Cr (N)420000
Basic static load rating C0r (N)630000
Fatigue limit load Cur (N)22800
Limiting speed nG (rpm)3,750
Reference speed nB (rpm)2,010
Effective load centre a (mm)168

Weight

Weight (kg)18.6

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 1,200 rpm
4105,00064889
670,0002163,000
852,5005127,111
1042,0001,00013,889
1528,0003,37546,875

Basic rating life per ISO 281: L10 = (C/P)3 with C = 420,000 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.364 (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
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
NUP234-E-M1FAGCylindrical Roller17031052700 kN18.6

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
16034FAGBall17026028131 kN5.15
6034FAGBall17026042179 kN7.13
6034-2RSRFAGBall17026042179 kN7.3
61834FAGBall1702152265 kN1.63
61934FAGBall17023028109 kN2.83
6234-MFAGBall17031052225 kN18.3
6334-MFAGBall17036072325 kN37.3
QJ1034-N2-MPAFAGBall17026042280 kN8.788

Request a quotation for QJ234-N2-MPA

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