51405NSKThrust

Name: NSK 51405 Thrust Bearing
Brand: NSK
SKU: 51405

51405 is a NSK thrust bearing, bore 25 mm, O.D. 60 mm, height 24 mm, dynamic rating 12,500 lbs. Dimensions, drawing, interchanges and price.

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Bore d25mm

Outside dia. D60mm

Overall width T24mm

Dynamic Cr12,500lbs

Static C0r20,000lbs

Limiting speed2,600rpm

Weight0.334kg

Cr / C0r0.62

Mean dia. dm42.5mm

Original catalogue drawing - NSK catalogue, page 143

51405 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	25	0.9843
D	Outside diameter	60	2.3622
T	Overall assembly width	24	0.9449

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)	25
Bore d (in)	0.9843
Outside dia. D (mm)	60
Outside dia. D (in)	2.3622
Overall width T (mm)	24
Overall width T (in)	0.9449

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	12500
Basic static axial rating Coa (lbs)	20000
Limiting speed - grease (rpm)	2,600
Limiting speed - oil (rpm)	4,000

Weight

Weight (kg)	0.334

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	1.812
Housing shoulder Da (in)	1.537

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 800 rpm
4	13,901	102	2,117
6	9,267	392	8,177
8	6,950	1,024	21,333
10	5,560	2,154	44,884
15	3,707	8,323	173,406

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 55,603 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.145 (dimensions) / p.146 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
51105	NSK	Thrust	25	42	11	4,430 lbs	0.056
51205	NSK	Thrust	25	47	15	6,300 lbs	0.111
51305	NSK	Thrust	25	52	18	8,040 lbs	0.169
52205	NSK	Thrust	25	47	None	28 kN	0.236
52305	NSK	Thrust	25	52	None	36 kN	0.35
52405	NSK	Thrust	25	60	None	56 kN	0.68
51104	NSK	Thrust	20	35	10	3,390 lbs	0.037
51204	NSK	Thrust	20	40	14	5,040 lbs	0.077

Request a quotation for 51405

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