51314NSKThrust

Name: NSK 51314 Thrust Bearing
Brand: NSK
SKU: 51314

51314 is a NSK thrust bearing, bore 70 mm, O.D. 125 mm, height 40 mm, dynamic rating 30,900 lbs. Dimensions, drawing, interchanges and price.

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Bore d70mm

Outside dia. D125mm

Overall width T40mm

Dynamic Cr30,900lbs

Static C0r70,500lbs

Limiting speed1,400rpm

Weight2kg

Cr / C0r0.44

Mean dia. dm97.5mm

Original catalogue drawing - NSK catalogue, page 145

51314 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	70	2.7559
D	Outside diameter	125	4.9213
T	Overall assembly width	40	1.5748

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)	70
Bore d (in)	2.7559
Outside dia. D (mm)	125
Outside dia. D (in)	4.9213
Overall width T (mm)	40
Overall width T (in)	1.5748

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	30900
Basic static axial rating Coa (lbs)	70500
Limiting speed - grease (rpm)	1,400
Limiting speed - oil (rpm)	2,000

Weight

Weight (kg)	2.0

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	4.058
Housing shoulder Da (in)	3.625

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 400 rpm
4	34,363	102	4,233
6	22,908	392	16,354
8	17,181	1,024	42,667
10	13,745	2,154	89,768
15	9,163	8,323	346,811

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 137,450 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.147 (dimensions) / p.148 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29414	NSK	Thrust	70	150	48	450 kN	3.9
29414E	NSK	Thrust	70	150	48	102,000 lbs	3.901
51114	NSK	Thrust	70	95	18	9,810 lbs	0.345
51214	NSK	Thrust	70	105	27	16,600 lbs	0.794
51414	NSK	Thrust	70	150	60	56,700 lbs	5.048
52214	NSK	Thrust	70	105	None	74 kN	1.59
52314	NSK	Thrust	70	125	None	137 kN	4.07
52414	NSK	Thrust	70	150	None	252 kN	9.12

Request a quotation for 51314

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