QJ348-N2-MPAFAGBall

Name: FAG QJ348-N2-MPA Ball Bearing
Brand: FAG
SKU: QJ348-N2-MPA

QJ348-N2-MPA is a FAG ball bearing, bore 240 mm, O.D. 500 mm, width 95 mm, dynamic rating 1020 kN. Dimensions, drawing, interchanges and price.

Brass cage

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Bore d240mm

Outside dia. D500mm

Width B95mm

Dynamic Cr1020kN

Static C0r1960kN

Limiting speed2,600rpm

Weight98.2kg

Cr / C0r0.52

Mean dia. dm370mm

Original catalogue drawing - FAG Schaeffler HR 1, page 322

QJ348-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

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)

Symbol	Dimension	mm	inch
d	Bore diameter	240	9.4488
D	Outside diameter	500	19.685
B	Inner-ring / bearing width	95	3.7402
r	Chamfer (min)	5	0.1969

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)	240
Outside dia. D (mm)	500
Width B (mm)	95
Inner-ring OD d1 (mm)	330.7
Inner-ring shoulder dia. D1 (mm)	410

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	229305
Basic static load rating Cor (lbs)	440626
Basic dynamic load rating Cr (N)	1.02e+06
Basic static load rating C0r (N)	1.96e+06
Fatigue limit load Cur (N)	52000
Limiting speed nG (rpm)	2,600
Effective load centre a (mm)	259

Weight

Weight (kg)	98.2

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	5
Shaft shoulder da (mm)	260
Housing shoulder Da (mm)	480
Housing fillet ra max (mm)	4

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 800 rpm
4	255,000	64	1,333
6	170,000	216	4,500
8	127,500	512	10,667
10	102,000	1,000	20,833
15	68,000	3,375	70,312

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 1,020,000 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	FAG
Source catalogue	FAG / Schaeffler Rolling Bearings HR 1
Catalogue page	p.322 (dimensions)

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

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6348	NSK	Ball	240	500	95	515 kN	94.4
348	NSK	Cylindrical Roller	240	500	95	306,000 lbs	93.894
NU348	NSK	Cylindrical Roller	240	500	95	1680 kN	94.6
30348	NSK	Tapered Roller	240	500	95	373,000 lbs	92.614

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6348-M	FAG	Ball	240	500	95	465 kN	96.4
NJ348-E-M1	FAG	Cylindrical Roller	240	500	95	1730 kN	97
NJ348-E-TB-M1	FAG	Cylindrical Roller	240	500	95	1720 kN	97
NU348-E-M1	FAG	Cylindrical Roller	240	500	95	1730 kN	95.7
NU348-E-TB-M1	FAG	Cylindrical Roller	240	500	95	1720 kN	95.7
30348	FAG	Tapered Roller	240	500	95	1780 kN	88.6

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16048	FAG	Ball	240	360	37	204 kN	12.7
6048-M	FAG	Ball	240	360	56	255 kN	20.5
61848	FAG	Ball	240	300	28	100 kN	3.769
61948	FAG	Ball	240	320	38	211 kN	6.88
6248-M	FAG	Ball	240	440	72	360 kN	51.3
6348-M	FAG	Ball	240	500	95	465 kN	96.4
QJ248-N2-MPA	FAG	Ball	240	440	72	680 kN	53.1

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