30328NSKTapered Roller

Name: NSK 30328 Tapered Roller Bearing
Brand: NSK
SKU: 30328

30328 is a NSK tapered roller bearing, bore 140 mm, O.D. 300 mm, width 62 mm, dynamic rating 135,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d140mm

Outside dia. D300mm

Width B62mm

Dynamic Cr135,000lbs

Static C0r166,000lbs

Limiting speed1,200rpm

Weight20.103kg

Cr / C0r0.81

Mean dia. dm220mm

Original catalogue drawing - NSK catalogue, page 107

30328 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	140	5.5118
D	Outside diameter	300	11.811
B	Inner-ring / bearing width	62	2.4409
T	Overall assembly width	67.75	2.6673
C	Cup / outer-ring width	53	2.0866

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)	140
Bore d (in)	5.5118
Outside dia. D (mm)	300
Outside dia. D (in)	11.8110
Width B (mm)	62
Width B (in)	2.4409
Overall width T (mm)	67.75
Overall width T (in)	2.6673
Cup width C (mm)	53
Cup width C (in)	2.0866

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	135000
Basic static load rating Cor (lbs)	166000
Limiting speed - grease (rpm)	1,200
Limiting speed - oil (rpm)	1,600

Weight

Weight (kg)	20.103

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.12
Shaft shoulder da min (in)	6.575
Housing shoulder Da max (in)	11.102
Shaft shoulder db max (in)	7.087

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 400 rpm
4	150,127	102	4,233
6	100,085	392	16,354
8	75,064	1,024	42,667
10	60,051	2,154	89,768
15	40,034	8,323	346,811

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 600,510 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.109 (dimensions) / p.110 (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
6328-M	FAG	Ball	140	300	62	270 kN	21.767
QJ328-N2-MPA	FAG	Ball	140	300	62	470 kN	23.2
N328-E-M1	FAG	Cylindrical Roller	140	300	62	790 kN	22.5
N328-E-XL-M1	FAG	Cylindrical Roller	140	300	62	790 kN	22.5
NJ328-E-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.5
NJ328-E-XL-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.5
NU328-E-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.1
NU328-E-XL-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.1
NUP328-E-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.8
NUP328-E-XL-TVP2	FAG	Cylindrical Roller	140	300	62	790 kN	20.8

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6328	NSK	Ball	140	300	62	56,800 lbs	21.999
7328B	NSK	Ball	140	300	62	62,000 lbs	21.273
328	NSK	Cylindrical Roller	140	300	62	123,000 lbs	19.051
NU328E	NSK	Cylindrical Roller	140	300	62	815 kN	22.8
HR30328	NSK	Tapered Roller	140	300	62	910 kN	21.1
HR31328J	NSK	Tapered Roller	140	300	62	124,800 lbs	23.224
7328	NSK	Precision / Angular Contact	140	300	62	330 kN	21.4

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
32328	NSK	Tapered Roller	140	300	102	221,000 lbs	33.906
HR30228	NSK	Tapered Roller	140	250	42	480 kN	8.74
HR30228J	NSK	Tapered Roller	140	250	42	87,700 lbs	8.741
HR30328	NSK	Tapered Roller	140	300	62	910 kN	21.1
HR31328	NSK	Tapered Roller	140	300	70	855 kN	23.1
HR31328J	NSK	Tapered Roller	140	300	62	124,800 lbs	23.224
HR32028	NSK	Tapered Roller	140	210	45	400 kN	5.32
HR32028XJ	NSK	Tapered Roller	140	210	45	325,000 lbs	5.321

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