QJ334-N2-MPAFAGBall

Name: FAG QJ334-N2-MPA Ball Bearing
Brand: FAG
SKU: QJ334-N2-MPA

QJ334-N2-MPA is a FAG ball bearing, bore 170 mm, O.D. 360 mm, width 72 mm, dynamic rating 585 kN. Dimensions, drawing, interchanges and price.

Brass cage

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Bore d170mm

Outside dia. D360mm

Width B72mm

Dynamic Cr585kN

Static C0r915kN

Limiting speed3,200rpm

Weight38.4kg

Cr / C0r0.64

Mean dia. dm265mm

Original catalogue drawing - FAG Schaeffler HR 1, page 322

QJ334-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	170	6.6929
D	Outside diameter	360	14.1732
B	Inner-ring / bearing width	72	2.8346
r	Chamfer (min)	4	0.1575

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)	360
Width B (mm)	72
Inner-ring OD d1 (mm)	238
Inner-ring shoulder dia. D1 (mm)	292

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	131513
Basic static load rating Cor (lbs)	205700
Basic dynamic load rating Cr (N)	585000
Basic static load rating C0r (N)	915000
Fatigue limit load Cur (N)	24900
Limiting speed nG (rpm)	3,200
Effective load centre a (mm)	186

Weight

Weight (kg)	38.4

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	4
Shaft shoulder da (mm)	187
Housing shoulder Da (mm)	343
Housing fillet ra max (mm)	3

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,000 rpm
4	146,250	64	1,067
6	97,500	216	3,600
8	73,125	512	8,533
10	58,500	1,000	16,667
15	39,000	3,375	56,250

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 585,000 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
6334	NSK	Ball	170	360	72	73,400 lbs	38.102
7334B	NSK	Ball	170	360	72	79,400 lbs	35.471
334	NSK	Cylindrical Roller	170	360	72	179,000 lbs	37.195
NU334E	NSK	Cylindrical Roller	170	360	72	1140 kN	37.9
30334	NSK	Tapered Roller	170	360	72	190,000 lbs	33.507
7334	NSK	Precision / Angular Contact	170	360	72	425 kN	35.8

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6334-M	FAG	Ball	170	360	72	325 kN	37.3
N334-E-M1	FAG	Cylindrical Roller	170	360	72	965 kN	37.9
N334-E-TB-M1	FAG	Cylindrical Roller	170	360	72	960 kN	37.9
NJ334-E-M1	FAG	Cylindrical Roller	170	360	72	965 kN	38.6
NJ334-E-TB-M1	FAG	Cylindrical Roller	170	360	72	960 kN	38.6
NU334-E-M1	FAG	Cylindrical Roller	170	360	72	965 kN	38
NU334-E-TB-M1	FAG	Cylindrical Roller	170	360	72	960 kN	38
30334-A	FAG	Tapered Roller	170	360	72	1040 kN	35.3

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16034	FAG	Ball	170	260	28	131 kN	5.15
6034	FAG	Ball	170	260	42	179 kN	7.13
6034-2RSR	FAG	Ball	170	260	42	179 kN	7.3
61834	FAG	Ball	170	215	22	65 kN	1.63
61934	FAG	Ball	170	230	28	109 kN	2.83
6234-M	FAG	Ball	170	310	52	225 kN	18.3
6334-M	FAG	Ball	170	360	72	325 kN	37.3
QJ1034-N2-MPA	FAG	Ball	170	260	42	280 kN	8.788

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