6338-MFAGBall

Name: FAG 6338-M Ball Bearing
Brand: FAG
SKU: 6338-M

6338-M is a FAG ball bearing, bore 190 mm, O.D. 400 mm, width 78 mm, dynamic rating 375 kN. Dimensions, drawing, interchanges and price.

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Bore d190mm

Outside dia. D400mm

Width B78mm

Dynamic Cr375kN

Static C0r440kN

Limiting speed3,600rpm

Weight50.4kg

Cr / C0r0.85

Mean dia. dm295mm

Original catalogue drawing - FAG Schaeffler HR 1, page 220

6338-M 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	190	7.4803
D	Outside diameter	400	15.748
B	Inner-ring / bearing width	78	3.0709
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)	190
Outside dia. D (mm)	400
Width B (mm)	78
Inner-ring OD d1 (mm)	260.2
Inner-ring shoulder dia. D1 (mm)	330.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	84303
Basic static load rating Cor (lbs)	98916
Basic dynamic load rating Cr (N)	375000
Basic static load rating C0r (N)	440000
Fatigue limit load Cur (N)	17500
Limiting speed nG (rpm)	3,600
Reference speed nB (rpm)	2,300

Weight

Weight (kg)	50.4

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	5
Shaft shoulder da (mm)	210
Housing shoulder Da (mm)	380
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 1,200 rpm
4	93,750	64	889
6	62,500	216	3,000
8	46,875	512	7,111
10	37,500	1,000	13,889
15	25,000	3,375	46,875

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 375,000 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.220 (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
6338	NSK	Ball	190	400	78	79,700 lbs	50.802
7338B	NSK	Ball	190	400	78	92,600 lbs	47.174
338	NSK	Cylindrical Roller	190	400	78	219,000 lbs	49.442
NU338E	NSK	Cylindrical Roller	190	400	78	1300 kN	50.6
30338	NSK	Tapered Roller	190	400	78	227,000 lbs	46.008
7338	NSK	Precision / Angular Contact	190	400	78	495 kN	47.5

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
QJ338-N2-MPA	FAG	Ball	190	400	78	735 kN	52.1
NU338-E-M1	FAG	Cylindrical Roller	190	400	78	1120 kN	50.6
NU338-E-TB-M1	FAG	Cylindrical Roller	190	400	78	1120 kN	50.6
30338	FAG	Tapered Roller	190	400	78	1210 kN	46.7

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16038	FAG	Ball	190	290	31	158 kN	7.04
6038-M	FAG	Ball	190	290	46	216 kN	11.3
61838	FAG	Ball	190	240	24	73 kN	2.24
61938	FAG	Ball	190	260	33	140 kN	4.39
6238-M	FAG	Ball	190	340	55	255 kN	22.6
QJ1038-N2-MPA	FAG	Ball	190	290	46	345 kN	11.4
QJ238-N2-MPA	FAG	Ball	190	340	55	455 kN	23.8
QJ338-N2-MPA	FAG	Ball	190	400	78	735 kN	52.1

Request a quotation for 6338-M

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