409NSKCylindrical Roller

Name: NSK 409 Cylindrical Roller Bearing
Brand: NSK
SKU: 409

409 is a NSK cylindrical roller bearing, bore 45 mm, O.D. 120 mm, width 29 mm, dynamic rating 24,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d45mm

Outside dia. D120mm

Width B29mm

Dynamic Cr24,000lbs

Static C0r22,900lbs

Limiting speed5,600rpm

Weight1.607kg

Cr / C0r1.05

Mean dia. dm82.5mm

Original catalogue drawing - NSK catalogue, page 57

409 NSK Cylindrical Roller 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	45	1.7717
D	Outside diameter	120	4.7244
B	Inner-ring / bearing width	29	1.1417

Notes

Cylindrical roller entries from the NSK inch catalogue are series numbers covering the N / NU / NJ / NUP / NH prefixes of the same size. 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)	45
Bore d (in)	1.7717
Outside dia. D (mm)	120
Outside dia. D (in)	4.7244
Width B (mm)	29
Width B (in)	1.1417

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	24000
Basic static load rating Cor (lbs)	22900
Limiting speed - grease (rpm)	5,600
Limiting speed - oil (rpm)	6,700

Weight

Weight (kg)	1.607

Mounting dimensions (fillets / shoulders)

Fillet ra max (in)	0.079
Fillet rb max (in)	0.079
Shaft shoulder da min (in)	2.126
Housing shoulder Da max (in)	4.370
Shaft shoulder db min (in)	2.126
Shaft shoulder db max (in)	2.441
Housing shoulder Db min (in)	4.055
Housing shoulder Db max (in)	4.370

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,800 rpm
4	26,689	102	941
6	17,793	392	3,634
8	13,345	1,024	9,481
10	10,676	2,154	19,948
15	7,117	8,323	77,069

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 106,757 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	NSK
Source catalogue	NSK inch product catalogue
Catalogue page	p.59 (dimensions) / p.60 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6409	FAG	Ball	45	120	29	83 kN	1.55
NJ409-XL-M1	FAG	Cylindrical Roller	45	120	29	143 kN	1.9
NU409-XL-M1	FAG	Cylindrical Roller	45	120	29	143 kN	1.87
7409-B-XL-MP	FAG	Precision / Angular Contact	45	120	29	86 kN	1.684

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
7409B	NSK	Ball	45	120	29	16,600 lbs	1.769

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1009	NSK	Cylindrical Roller	45	75	16	7,260 lbs	0.277
209	NSK	Cylindrical Roller	45	85	19	10,300 lbs	0.44
2209	NSK	Cylindrical Roller	45	85	23	13,800 lbs	0.535
2309	NSK	Cylindrical Roller	45	100	36	22,200 lbs	1.238
309	NSK	Cylindrical Roller	45	100	25	16,600 lbs	0.88
NU1009	NSK	Cylindrical Roller	45	75	16	40 kN	0.279
NU209E	NSK	Cylindrical Roller	45	85	19	77.5 kN	0.438
NU2209E	NSK	Cylindrical Roller	45	85	23	93.5 kN	0.521

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