NU306ENSKCylindrical Roller

Name: NSK NU306E Cylindrical Roller Bearing
Brand: NSK
SKU: NU306E

NU306E is a NSK cylindrical roller bearing, bore 30 mm, O.D. 72 mm, width 19 mm, dynamic rating 65.5 kN. Dimensions, drawing, interchanges and price.

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Bore d30mm

Outside dia. D72mm

Width B19mm

Dynamic Cr65.5kN

Static C0r50kN

Weight0.409kg

Cr / C0r1.31

Mean dia. dm51mm

Original catalogue drawing - NSK E1103, page 232

NU306E 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	30	1.1811
D	Outside diameter	72	2.8346
B	Inner-ring / bearing width	19	0.748
r	Chamfer (min)	1.1	0.0433

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)	30
Outside dia. D (mm)	72
Width B (mm)	19

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	14725
Basic static load rating Cor (lbs)	11240
Basic dynamic load rating Cr (N)	65500
Basic static load rating C0r (N)	50000

Weight

Weight (kg)	0.409

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	1.1
Chamfer r1 min (mm)	1.1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	16,375	102	3,386
6	10,917	392	13,083
8	8,188	1,024	34,133
10	6,550	2,154	71,814
15	4,367	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 65,500 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.232 (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
1306-K-TVH-C3	FAG	Ball	30	72	19	21.7 kN	0.379
1306-TVH	FAG	Ball	30	72	19	21.7 kN	0.384
6306	FAG	Ball	30	72	19	29 kN	0.355
6306-2RSR	FAG	Ball	30	72	19	29 kN	0.365
6306-2Z	FAG	Ball	30	72	19	29 kN	0.363
6306-C	FAG	Ball	30	72	19	32 kN	0.328
6306-C-2BRS	FAG	Ball	30	72	19	32 kN	0.339
6306-C-2HRS	FAG	Ball	30	72	19	32 kN	0.34
6306-C-2Z	FAG	Ball	30	72	19	32 kN	0.339
QJ306-TVP	FAG	Ball	30	72	19	58.5 kN	0.379

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1306	NSK	Ball	30	72	19	4,770 lbs	0.408
6306	NSK	Ball	30	72	19	5,990 lbs	0.345
7306B	NSK	Ball	30	72	19	6,550 lbs	0.358
BL306	NSK	Ball	30	72	19	7,410 lbs	0.363
306	NSK	Cylindrical Roller	30	72	19	8,690 lbs	0.358
HR30306	NSK	Tapered Roller	30	72	19	73 kN	0.403
HR30306C	NSK	Tapered Roller	30	72	19	12,700 lbs	0.39
HR30306J	NSK	Tapered Roller	30	72	19	13,400 lbs	0.404

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1006	NSK	Cylindrical Roller	30	55	13	4,400 lbs	0.136
206	NSK	Cylindrical Roller	30	62	16	5,260 lbs	0.213
2206	NSK	Cylindrical Roller	30	62	20	7,370 lbs	0.263
2306	NSK	Cylindrical Roller	30	72	27	11,600 lbs	0.508
306	NSK	Cylindrical Roller	30	72	19	8,690 lbs	0.358
406	NSK	Cylindrical Roller	30	90	23	14,100 lbs	0.74
NU1006	NSK	Cylindrical Roller	30	55	13	24.2 kN	0.136
NU206E	NSK	Cylindrical Roller	30	62	16	48 kN	0.205

Request a quotation for NU306E

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