51313NSKThrust

Name: NSK 51313 Thrust Bearing
Brand: NSK
SKU: 51313

51313 is a NSK thrust bearing, bore 65 mm, O.D. 115 mm, height 36 mm, dynamic rating 27,600 lbs. Dimensions, drawing, interchanges and price.

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Bore d65mm

Outside dia. D115mm

Overall width T36mm

Dynamic Cr27,600lbs

Static C0r63,300lbs

Limiting speed1,500rpm

Weight1.542kg

Cr / C0r0.44

Mean dia. dm90mm

Original catalogue drawing - NSK catalogue, page 145

51313 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	65	2.5591
D	Outside diameter	115	4.5276
T	Overall assembly width	36	1.4173

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)	65
Bore d (in)	2.5591
Outside dia. D (mm)	115
Outside dia. D (in)	4.5276
Overall width T (mm)	36
Overall width T (in)	1.4173

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	27600
Basic static axial rating Coa (lbs)	63300
Limiting speed - grease (rpm)	1,500
Limiting speed - oil (rpm)	2,400

Weight

Weight (kg)	1.542

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	3.743
Housing shoulder Da (in)	3.349

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	30,693	102	3,386
6	20,462	392	13,083
8	15,346	1,024	34,133
10	12,277	2,154	71,814
15	8,185	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 122,771 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
29413E	NSK	Thrust	65	140	45	91,000 lbs	3.198
51113	NSK	Thrust	65	90	18	9,480 lbs	0.322
51213	NSK	Thrust	65	100	27	17,000 lbs	0.757
51413	NSK	Thrust	65	140	56	52,500 lbs	4.1
52213	NSK	Thrust	65	100	None	75.5 kN	1.45
52313	NSK	Thrust	65	115	None	123 kN	3.06
52413	NSK	Thrust	65	140	None	234 kN	7.66
29412	NSK	Thrust	60	130	42	330 kN	-

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