51306NSKThrust

Name: NSK 51306 Thrust Bearing
Brand: NSK
SKU: 51306

51306 is a NSK thrust bearing, bore 30 mm, O.D. 60 mm, height 21 mm, dynamic rating 9,700 lbs. Dimensions, drawing, interchanges and price.

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Bore d30mm

Outside dia. D60mm

Overall width T21mm

Dynamic Cr9,700lbs

Static C0r17,600lbs

Limiting speed2,800rpm

Weight0.267kg

Cr / C0r0.55

Mean dia. dm45mm

Original catalogue drawing - NSK catalogue, page 143

51306 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	30	1.1811
D	Outside diameter	60	2.3622
T	Overall assembly width	21	0.8268

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)	30
Bore d (in)	1.1811
Outside dia. D (mm)	60
Outside dia. D (in)	2.3622
Overall width T (mm)	21
Overall width T (in)	0.8268

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	9700
Basic static axial rating Coa (lbs)	17600
Limiting speed - grease (rpm)	2,800
Limiting speed - oil (rpm)	4,300

Weight

Weight (kg)	0.267

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	1.891
Housing shoulder Da (in)	1.655

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 900 rpm
4	10,787	102	1,881
6	7,191	392	7,268
8	5,393	1,024	18,963
10	4,315	2,154	39,897
15	2,877	8,323	154,138

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 43,148 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
51106	NSK	Thrust	30	47	11	4,630 lbs	0.064
51206	NSK	Thrust	30	52	16	6,610 lbs	0.137
51406	NSK	Thrust	30	70	28	16,400 lbs	0.519
52206	NSK	Thrust	30	52	None	29.5 kN	0.288
52306	NSK	Thrust	30	60	None	43 kN	0.511
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

Request a quotation for 51306

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