51328XNSKThrust

Name: NSK 51328X Thrust Bearing
Brand: NSK
SKU: 51328X

51328X is a NSK thrust bearing, bore 140 mm, O.D. 280 mm, height 80 mm, dynamic rating 82,700 lbs. Dimensions, drawing, interchanges and price.

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Bore d140mm

Outside dia. D280mm

Overall width T80mm

Dynamic Cr82,700lbs

Static C0r254,000lbs

Limiting speed6,700rpm

Weight15.599kg

Cr / C0r0.33

Mean dia. dm210mm

Original catalogue drawing - NSK catalogue, page 147

51328X 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	140	5.5118
D	Outside diameter	280	11.0236
T	Overall assembly width	80	3.1496

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)	140
Bore d (in)	5.5118
Outside dia. D (mm)	280
Outside dia. D (in)	11.0236
Overall width T (mm)	80
Overall width T (in)	3.1496

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	82700
Basic static axial rating Coa (lbs)	254000
Limiting speed - grease (rpm)	6,700
Limiting speed - oil (rpm)	1,000

Weight

Weight (kg)	15.599

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	7.841
Housing shoulder Da (in)	7.131

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,200 rpm
4	91,967	102	770
6	61,311	392	2,973
8	45,983	1,024	7,758
10	36,787	2,154	16,321
15	24,525	8,323	63,057

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 367,868 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.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29328	NSK	Thrust	140	240	60	840 kN	10.4
29328E	NSK	Thrust	140	240	60	189,000 lbs	10.387
29428	NSK	Thrust	140	280	85	1370 kN	-
29428E	NSK	Thrust	140	280	85	310,000 lbs	22.226
51128X	NSK	Thrust	140	200	31	24,300 lbs	1.828
51228X	NSK	Thrust	140	240	46	41,700 lbs	4.3
51428X	NSK	Thrust	140	160	112	125,000 lbs	34.7
52228	NSK	Thrust	140	200	None	186 kN	8.87

Request a quotation for 51328X

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