QJ303-XL-MPAFAGBall

Name: FAG QJ303-XL-MPA Ball Bearing
Brand: FAG
SKU: QJ303-XL-MPA

QJ303-XL-MPA is a FAG ball bearing, bore 17 mm, O.D. 47 mm, width 14 mm, dynamic rating 24.5 kN. Dimensions, drawing, interchanges and price.

Brass cageX-life

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Bore d17mm

Outside dia. D47mm

Width B14mm

Dynamic Cr24.5kN

Static C0r15.1kN

Limiting speed29,500rpm

Weight0.148kg

Cr / C0r1.62

Mean dia. dm32mm

Original catalogue drawing - FAG Schaeffler HR 1, page 362

QJ303-XL-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	17	0.6693
D	Outside diameter	47	1.8504
B	Inner-ring / bearing width	14	0.5512
r	Chamfer (min)	1	0.0394

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)	17
Outside dia. D (mm)	47
Width B (mm)	14
Inner-ring OD d1 (mm)	27.8
Inner-ring shoulder dia. D1 (mm)	36.4

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	5508
Basic static load rating Cor (lbs)	3395
Basic dynamic load rating Cr (N)	24500
Basic static load rating C0r (N)	15100
Fatigue limit load Cur (N)	1100
Limiting speed nG (rpm)	29,500
Reference speed nB (rpm)	12,000
Effective load centre a (mm)	22

Weight

Weight (kg)	0.148

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	1
Shaft shoulder da (mm)	22.6
Housing shoulder Da (mm)	41.4
Housing fillet ra max (mm)	1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 3,000 rpm
4	6,125	64	356
6	4,083	216	1,200
8	3,062	512	2,844
10	2,450	1,000	5,556
15	1,633	3,375	18,750

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 24,500 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.362 (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
1303	NSK	Ball	17	47	14	2,810 lbs	0.136
6303	NSK	Ball	17	47	14	3,060 lbs	0.113
7303B	NSK	Ball	17	47	14	3,110 lbs	0.118
30303	NSK	Tapered Roller	17	47	14	27 kN	0.129
HR30303	NSK	Tapered Roller	17	47	14	36 kN	0.134
HR30303J	NSK	Tapered Roller	17	47	14	6,560 lbs	0.136
7303	NSK	Precision / Angular Contact	17	47	14	17.5 kN	0.116
30303	Timken	Tapered Roller	17	47	14	32.7 kN	0.14

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1303-TVH	FAG	Ball	17	47	14	12.9 kN	0.065
6303	FAG	Ball	17	47	14	13.4 kN	0.114
6303-2RSR	FAG	Ball	17	47	14	13.4 kN	0.118
6303-2Z	FAG	Ball	17	47	14	13.4 kN	0.117
6303-C	FAG	Ball	17	47	14	15 kN	0.107
6303-C-2BRS	FAG	Ball	17	47	14	15 kN	0.111
6303-C-2HRS	FAG	Ball	17	47	14	15 kN	0.111
6303-C-2Z	FAG	Ball	17	47	14	15 kN	0.067

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1203-TVH	FAG	Ball	17	40	12	8.1 kN	0.073
1303-TVH	FAG	Ball	17	47	14	12.9 kN	0.065
16003	FAG	Ball	17	35	8	6.4 kN	0.032
2203-2RS-TVH	FAG	Ball	17	40	16	8.1 kN	0.098
2203-TVH	FAG	Ball	17	40	16	11.8 kN	0.054
2303-2RS-TVH	FAG	Ball	17	47	19	12.9 kN	0.175
2303-TVH	FAG	Ball	17	47	19	13.9 kN	0.155
4203-B-TVH	FAG	Ball	17	40	16	15.6 kN	0.1

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