QJ344-N2-MPAFAGBall

Name: FAG QJ344-N2-MPA Ball Bearing
Brand: FAG
SKU: QJ344-N2-MPA

QJ344-N2-MPA is a FAG ball bearing, bore 220 mm, O.D. 460 mm, width 88 mm, dynamic rating 900 kN. Dimensions, drawing, interchanges and price.

Brass cage

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Bore d220mm

Outside dia. D460mm

Width B88mm

Dynamic Cr900kN

Static C0r1660kN

Limiting speed2,800rpm

Weight77.1kg

Cr / C0r0.54

Mean dia. dm340mm

Original catalogue drawing - FAG Schaeffler HR 1, page 322

QJ344-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	220	8.6614
D	Outside diameter	460	18.1102
B	Inner-ring / bearing width	88	3.4646
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)	220
Outside dia. D (mm)	460
Width B (mm)	88
Inner-ring OD d1 (mm)	302
Inner-ring shoulder dia. D1 (mm)	378

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	202328
Basic static load rating Cor (lbs)	373183
Basic dynamic load rating Cr (N)	900000
Basic static load rating C0r (N)	1.66e+06
Fatigue limit load Cur (N)	44500
Limiting speed nG (rpm)	2,800
Effective load centre a (mm)	238

Weight

Weight (kg)	77.1

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	5
Shaft shoulder da (mm)	240
Housing shoulder Da (mm)	440
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 900 rpm
4	225,000	64	1,185
6	150,000	216	4,000
8	112,500	512	9,481
10	90,000	1,000	18,519
15	60,000	3,375	62,500

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 900,000 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
344	NSK	Cylindrical Roller	220	460	88	268,000 lbs	74.843
NU344	NSK	Cylindrical Roller	220	460	88	1470 kN	74.6
30344	NSK	Tapered Roller	220	460	88	321,000 lbs	72.411

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6344-M	FAG	Ball	220	460	88	440 kN	73.7
NU344-E-M1	FAG	Cylindrical Roller	220	460	88	1430 kN	75.5
NU344-E-TB-M1	FAG	Cylindrical Roller	220	460	88	1440 kN	75.5
30344	FAG	Tapered Roller	220	460	88	1440 kN	68

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16044	FAG	Ball	220	340	37	200 kN	11.8
6044-M	FAG	Ball	220	340	56	245 kN	18.8
61844	FAG	Ball	220	270	24	78 kN	2.62
61944	FAG	Ball	220	300	38	186 kN	6.372
6244-M	FAG	Ball	220	400	65	300 kN	37.9
6344-M	FAG	Ball	220	460	88	440 kN	73.7
QJ244-N2-MPA	FAG	Ball	220	400	65	630 kN	38.6

Request a quotation for QJ344-N2-MPA

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