51418XNSKThrust

Name: NSK 51418X Thrust Bearing
Brand: NSK
SKU: 51418X

51418X is a NSK thrust bearing, bore 90 mm, O.D. 190 mm, height 77 mm, dynamic rating 73,900 lbs. Dimensions, drawing, interchanges and price.

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Bore d90mm

Outside dia. D190mm

Overall width T77mm

Dynamic Cr73,900lbs

Static C0r185,000lbs

Limiting speed8,000rpm

Weight10.201kg

Cr / C0r0.4

Mean dia. dm140mm

Original catalogue drawing - NSK catalogue, page 147

51418X 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	90	3.5433
D	Outside diameter	190	7.4803
T	Overall assembly width	77	3.0315

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)	90
Bore d (in)	3.5433
Outside dia. D (mm)	190
Outside dia. D (in)	7.4803
Overall width T (mm)	77
Overall width T (in)	3.0315

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	73900
Basic static axial rating Coa (lbs)	185000
Limiting speed - grease (rpm)	8,000
Limiting speed - oil (rpm)	1,200

Weight

Weight (kg)	10.201

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	5.871
Housing shoulder Da (in)	5.161

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,600 rpm
4	82,181	102	651
6	54,787	392	2,516
8	41,090	1,024	6,564
10	32,872	2,154	13,810
15	21,915	8,323	53,356

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 328,724 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
51418	NSK	Thrust	90	190	77	330 kN	10.3

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29318E	NSK	Thrust	90	150	39	78,500 lbs	2.835
29418E	NSK	Thrust	90	190	60	156,000 lbs	7.53
51118	NSK	Thrust	90	120	22	13,600 lbs	0.644
51218	NSK	Thrust	90	135	35	25,600 lbs	1.692
51318	NSK	Thrust	90	155	50	48,300 lbs	3.828
51418	NSK	Thrust	90	190	77	330 kN	10.3
52318	NSK	Thrust	90	155	None	214 kN	7.33
52418	NSK	Thrust	90	190	None	330 kN	18.1

Request a quotation for 51418X

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