51428XNSKThrust

Name: NSK 51428X Thrust Bearing
Brand: NSK
SKU: 51428X

51428X is a NSK thrust bearing, bore 140 mm, O.D. 160 mm, height 112 mm, dynamic rating 125,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d140mm

Outside dia. D160mm

Overall width T112mm

Dynamic Cr125,000lbs

Static C0r392,000lbs

Limiting speed5,300rpm

Weight34.7kg

Cr / C0r0.32

Mean dia. dm150mm

Original catalogue drawing - NSK catalogue, page 147

51428X 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	160	6.2992
T	Overall assembly width	112	4.4094

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)	160
Outside dia. D (in)	6.2992
Overall width T (mm)	112
Overall width T (in)	4.4094

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	125000
Basic static axial rating Coa (lbs)	392000
Limiting speed - grease (rpm)	5,300
Limiting speed - oil (rpm)	800

Weight

Weight (kg)	34.7

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.118
Shaft shoulder da min (in)	8.747
Housing shoulder Da (in)	7.801

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,700 rpm
4	139,007	102	996
6	92,671	392	3,848
8	69,503	1,024	10,039
10	55,603	2,154	21,122
15	37,069	8,323	81,603

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 556,028 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
51328X	NSK	Thrust	140	280	80	82,700 lbs	15.599
52228	NSK	Thrust	140	200	None	186 kN	8.87

Request a quotation for 51428X

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