51430XNSKThrust

Name: NSK 51430X Thrust Bearing
Brand: NSK
SKU: 51430X

51430X is a NSK thrust bearing, bore 150 mm, O.D. 300 mm, height 120 mm, dynamic rating 139,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d150mm

Outside dia. D300mm

Overall width T120mm

Dynamic Cr139,000lbs

Static C0r452,000lbs

Limiting speed4,800rpm

Weight43.5kg

Cr / C0r0.31

Mean dia. dm225mm

Original catalogue drawing - NSK catalogue, page 147

51430X NSK Thrust 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	300	11.811
T	Overall assembly width	120	4.7244

Notes

Thrust bearing ratings are axial values Ca / Coa; T is the overall height. 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)	300
Outside dia. D (in)	11.8110
Overall width T (mm)	120
Overall width T (in)	4.7244

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	139000
Basic static axial rating Coa (lbs)	452000
Limiting speed - grease (rpm)	4,800
Limiting speed - oil (rpm)	700

Weight

Weight (kg)	43.5

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.118
Shaft shoulder da min (in)	9.377
Housing shoulder Da (in)	8.353

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,600 rpm
4	154,576	102	1,058
6	103,050	392	4,089
8	77,288	1,024	10,667
10	61,830	2,154	22,442
15	41,220	8,323	86,703

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 618,303 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.149 (dimensions) / p.150 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
51430	NSK	Thrust	150	300	120	620 kN	43.8

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29330	NSK	Thrust	150	250	60	870 kN	-
29330E	NSK	Thrust	150	250	60	196,000 lbs	10.795
29430	NSK	Thrust	150	300	90	1580 kN	27.3
29430E	NSK	Thrust	150	300	90	355,000 lbs	27.216
51130	NSK	Thrust	150	190	31	110 kN	-
51130X	NSK	Thrust	150	190	31	24,700 lbs	1.941
51230	NSK	Thrust	150	215	50	238 kN	6.09
51230X	NSK	Thrust	150	215	50	53,600 lbs	5.511

Request a quotation for 51430X

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