51424XNSKThrust

Name: NSK 51424X Thrust Bearing
Brand: NSK
SKU: 51424X

51424X is a NSK thrust bearing, bore 120 mm, O.D. 250 mm, height 102 mm, dynamic rating 108,000 lbs. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d120mm

Outside dia. D250mm

Overall width T102mm

Dynamic Cr108,000lbs

Static C0r313,000lbs

Limiting speed6,000rpm

Weight26.199kg

Cr / C0r0.35

Mean dia. dm185mm

Original catalogue drawing - NSK catalogue, page 147

51424X 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	120	4.7244
D	Outside diameter	250	9.8425
T	Overall assembly width	102	4.0157

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)	120
Bore d (in)	4.7244
Outside dia. D (mm)	250
Outside dia. D (in)	9.8425
Overall width T (mm)	102
Overall width T (in)	4.0157

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	108000
Basic static axial rating Coa (lbs)	313000
Limiting speed - grease (rpm)	6,000
Limiting speed - oil (rpm)	900

Weight

Weight (kg)	26.199

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.118
Shaft shoulder da min (in)	7.722
Housing shoulder Da (in)	6.856

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,000 rpm
4	120,102	102	847
6	80,068	392	3,271
8	60,051	1,024	8,533
10	48,041	2,154	17,954
15	32,027	8,323	69,362

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 480,408 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
29324	NSK	Thrust	120	210	54	645 kN	-
29324E	NSK	Thrust	120	210	54	144,000 lbs	7.303
29424	NSK	Thrust	120	250	78	1160 kN	16.6
29424E	NSK	Thrust	120	250	78	262,000 lbs	16.556
51124	NSK	Thrust	120	155	25	20,200 lbs	1.12
51224	NSK	Thrust	120	170	39	31,700 lbs	2.69
51324X	NSK	Thrust	120	210	70	73,900 lbs	9.702
52224	NSK	Thrust	120	170	None	141 kN	5.4

Request a quotation for 51424X

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516