HR31330JNSKTapered Roller

Name: NSK HR31330J Tapered Roller Bearing
Brand: NSK
SKU: HR31330J

HR31330J is a NSK tapered roller bearing, bore 150 mm, O.D. 320 mm, width 65 mm. Dimensions, drawing, interchanges and price.

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Bore d150mm

Outside dia. D320mm

Width B65mm

Dynamic Cr137,100lbs

Static C0r247,000lbs

Limiting speed1,130rpm

Weight28.477kg

Cr / C0r0.56

Mean dia. dm235mm

Original catalogue drawing - NSK catalogue, page 109

HR31330J 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	150	5.9055
D	Outside diameter	320	12.5984
B	Inner-ring / bearing width	65	2.5591
T	Overall assembly width	72	2.8346
C	Cup / outer-ring width	45	1.7717

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)	150
Bore d (in)	5.9055
Outside dia. D (mm)	320
Outside dia. D (in)	12.5984
Width B (mm)	65
Width B (in)	2.5591
Overall width T (mm)	72
Overall width T (in)	2.8346
Cup width C (mm)	45
Cup width C (in)	1.7717

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	137100
Basic static load rating Cor (lbs)	247000
Limiting speed - grease (rpm)	1,130
Limiting speed - oil (rpm)	1,530

Weight

Weight (kg)	28.477

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.12
Shaft shoulder da min (in)	6.732
Housing shoulder Da max (in)	11.890
Shaft shoulder db max (in)	11.890

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 300 rpm
4	152,463	102	5,644
6	101,642	392	21,805
8	76,231	1,024	56,889
10	60,985	2,154	119,691
15	40,657	8,323	462,415

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 609,851 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.111 (dimensions) / p.112 (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
6330	FAG	Ball	150	320	65	300 kN	22.4
6330-M	FAG	Ball	150	320	65	280 kN	26.5
QJ330-N2-MPA	FAG	Ball	150	320	65	510 kN	28
N330-E-M1	FAG	Cylindrical Roller	150	320	65	900 kN	26.8
N330-E-XL-M1	FAG	Cylindrical Roller	150	320	65	900 kN	26.9
NJ330-E-M1	FAG	Cylindrical Roller	150	320	65	900 kN	27.2
NJ330-E-XL-M1	FAG	Cylindrical Roller	150	320	65	900 kN	27.4
NU330-E-M1	FAG	Cylindrical Roller	150	320	65	900 kN	26.8
NU330-E-XL-M1	FAG	Cylindrical Roller	150	320	65	900 kN	27
NUP330-E-M1	FAG	Cylindrical Roller	150	320	65	900 kN	27.7

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6330	NSK	Ball	150	320	65	61,700 lbs	25.991
7330B	NSK	Ball	150	320	65	64,800 lbs	25.31
330	NSK	Cylindrical Roller	150	320	65	133,000 lbs	26.308
NU330E	NSK	Cylindrical Roller	150	320	65	930 kN	27.1
30330	NSK	Tapered Roller	150	320	65	155,000 lbs	24.204
HR30330	NSK	Tapered Roller	150	320	65	1020 kN	25
7330	NSK	Precision / Angular Contact	150	320	65	350 kN	26

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30230	NSK	Tapered Roller	150	270	45	97,800 lbs	10.7
30330	NSK	Tapered Roller	150	320	65	155,000 lbs	24.204
32330	NSK	Tapered Roller	150	320	108	252,000 lbs	41.408
32930	NSK	Tapered Roller	150	210	36	305 kN	3.8
HR30330	NSK	Tapered Roller	150	320	65	1020 kN	25
HR31330	NSK	Tapered Roller	150	320	75	975 kN	28.5
HR32030	NSK	Tapered Roller	150	225	48	460 kN	6.6
HR32030XJ	NSK	Tapered Roller	150	225	48	375,000 lbs	6.6

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