HR32306CNSKTapered Roller

Name: NSK HR32306C Tapered Roller Bearing
Brand: NSK
SKU: HR32306C

HR32306C is a NSK tapered roller bearing, bore 30 mm, O.D. 72 mm, width 27 mm, dynamic rating 17,100 lbs. Dimensions, drawing, interchanges and price.

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Bore d30mm

Outside dia. D72mm

Width B27mm

Dynamic Cr17,100lbs

Static C0r19,400lbs

Limiting speed5,600rpm

Weight0.553kg

Cr / C0r0.88

Mean dia. dm51mm

Original catalogue drawing - NSK catalogue, page 131

HR32306C NSK Tapered 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	27	1.063
T	Overall assembly width	28.75	1.1319
C	Cup / outer-ring width	22	0.8661

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
Bore d (in)	1.1811
Outside dia. D (mm)	72
Outside dia. D (in)	2.8346
Width B (mm)	27
Width B (in)	1.0630
Overall width T (mm)	28.75
Overall width T (in)	1.1319
Cup width C (mm)	22
Cup width C (in)	0.8661

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	17100
Basic static load rating Cor (lbs)	19400
Limiting speed - grease (rpm)	5,600
Limiting speed - oil (rpm)	7,500

Weight

Weight (kg)	0.553

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	1.694
Housing shoulder Da max (in)	2.482
Shaft shoulder db max (in)	1.418

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,800 rpm
4	19,016	102	941
6	12,677	392	3,634
8	9,508	1,024	9,481
10	7,606	2,154	19,948
15	5,071	8,323	77,069

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 76,065 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.133 (dimensions) / p.134 (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
2306-2RS-TVH	FAG	Ball	30	72	27	21.7 kN	0.554
2306-K-TVH-C3	FAG	Ball	30	72	27	32.5 kN	0.476
2306-TVH	FAG	Ball	30	72	27	32.5 kN	0.488
4306-B-TVH	FAG	Ball	30	72	27	44 kN	0.5
62306-2RSR	FAG	Ball	30	72	27	30 kN	0.486
NJ2306-E-TVP2	FAG	Cylindrical Roller	30	72	27	86 kN	0.54
NJ2306-E-XL-TVP2	FAG	Cylindrical Roller	30	72	27	86 kN	0.54
NU2306-E-TVP2	FAG	Cylindrical Roller	30	72	27	86 kN	0.529
NU2306-E-XL-TVP2	FAG	Cylindrical Roller	30	72	27	86 kN	0.529
NUP2306-E-TVP2	FAG	Cylindrical Roller	30	72	27	86 kN	0.551

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
2306	NSK	Ball	30	72	27	7,080 lbs	0.553
2306	NSK	Cylindrical Roller	30	72	27	11,600 lbs	0.508
NU2306E	NSK	Cylindrical Roller	30	72	27	92 kN	0.518
HR32306	NSK	Tapered Roller	30	72	27	98 kN	0.57
HR32306J	NSK	Tapered Roller	30	72	27	18,000 lbs	0.572

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
15117/15245	NSK	Tapered Roller	30	62	20.64	10,400 lbs	0.263
15117/15250	NSK	Tapered Roller	30	63.5	20.64	10,400 lbs	0.295
HR30206	NSK	Tapered Roller	30	62	16	53 kN	0.238
HR30206C	NSK	Tapered Roller	30	62	16	7,980 lbs	0.238
HR30206J	NSK	Tapered Roller	30	62	16	9,670 lbs	0.236
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

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