NU2248NSKCylindrical Roller

Name: NSK NU2248 Cylindrical Roller Bearing
Brand: NSK
SKU: NU2248

NU2248 is a NSK cylindrical roller bearing, bore 240 mm, O.D. 440 mm, width 120 mm, dynamic rating 1770 kN. Dimensions, drawing, interchanges and price.

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Bore d240mm

Outside dia. D440mm

Width B120mm

Dynamic Cr1770kN

Static C0r2320kN

Weight84.9kg

Cr / C0r0.76

Mean dia. dm340mm

Original catalogue drawing - NSK E1103, page 243

NU2248 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	240	9.4488
D	Outside diameter	440	17.3228
B	Inner-ring / bearing width	120	4.7244
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)	240
Outside dia. D (mm)	440
Width B (mm)	120

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	397912
Basic static load rating Cor (lbs)	521557
Basic dynamic load rating Cr (N)	1770000
Basic static load rating C0r (N)	2320000

Weight

Weight (kg)	84.9

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	4
Chamfer r1 min (mm)	4

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	442,500	102	3,386
6	295,000	392	13,083
8	221,250	1,024	34,133
10	177,000	2,154	71,814
15	118,000	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 1,770,000 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 CAT. No. E1103 (metric)
Catalogue page	p.243 (dimensions)

Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
NU2248-EX-M1	FAG	Cylindrical Roller	240	440	120	1830 kN	82.8
NU2248-EX-TB-M1	FAG	Cylindrical Roller	240	440	120	1850 kN	82.8
22248-BE-XL	FAG	Spherical Roller	240	440	120	2230 kN	83.6
22248-BE-XL-K	FAG	Spherical Roller	240	440	120	2230 kN	81.8
32248-A	FAG	Tapered Roller	240	440	120	1860 kN	80.5
32248-XL	FAG	Tapered Roller	240	440	120	2190 kN	80.5
32248	Timken	Tapered Roller	240	440	120	2230 kN	81.12

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
2248	NSK	Cylindrical Roller	240	440	120	321,000 lbs	84.368
22248CAME4	NSK	Spherical Roller	240	440	120	420,000 lbs	79.524
32248	NSK	Tapered Roller	240	440	120	366,000 lbs	78.05

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1048	NSK	Cylindrical Roller	240	360	56	119,000 lbs	19.504
2248	NSK	Cylindrical Roller	240	440	120	321,000 lbs	84.368
248	NSK	Cylindrical Roller	240	440	72	210,000 lbs	50.349
348	NSK	Cylindrical Roller	240	500	95	306,000 lbs	93.894
NCF1848V	NSK	Cylindrical Roller	240	300	28	290 kN	4.2
NCF2948V	NSK	Cylindrical Roller	240	320	48	715 kN	10.4
NCF2952V	NSK	Cylindrical Roller	240	360	60	925 kN	18.1
NCF3048V	NSK	Cylindrical Roller	240	360	92	1430 kN	31.2

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