NSS Models

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Features of NSS Models

These are couplings with different shaft centers that use the crank motion of a link. Power input at one end disc is transmitted via a link and center disc to another end disc.The amount of eccentricity is determined by the length of the link. Power can be transmitted smoothly when shaft centers are different. And since power is transmitted by the crank motion of the link, translation of shaft centers during rotation is possible. The standard NSS model has 3 x 2 links, while quasi-standard NSS models increase the number of links and the rated torque.

Translation of shafts is possible

Since the crank motion of the link is used, the drive and driven shafts can be translated freely within the displacement range even when stopped or rotating under load.

Space saving

Couplings can be shortened in the axial direction and a larger amount of displacement achieved compared to the older combination of universal joint and spline.

Model	No. of links	Parallel misalignment	Torque	Max. rotation speed ［min^-1］	Bearing basic load ［N］	Pin pitch = Radius of the circle [m]	Moment of inertia ［kg・m²］	Mass ［kg］
Min. [mm]. S×0.25 ［mm］	Max. [mm] S×0.95 ［mm］	Linear Max. [mm]	Nominal ［N・m］	Max. ［N・m］	C	R
NSS 7.3.7	3×2	9	34	65	49	137	3000	3870	0.024	9.03×10^-4	1.3
NSS 7.7.9	3×2	18	66	128	68	196	2500	3870	0.035	2.69×10^-3	1.9
NSS 10.9.12	3×2	23	85	165	196	600	2000	8920	0.045	1.15×10^-2	4.9
NSS 13.9.14	3×2	23	85	165	350	1060	1800	14120	0.050	2.80×10^-2	10.4
NSS 16.10.16	3×2	25	95	183	640	1850	1500	21570	0.057	5.80×10^-2	15.7
NSS 20.9.20	3×2	23	85	165	1180	3470	1000	30890	0.075	1.61×10^-1	27
NSS 20.9.20/4	4×2	23	85	165	1370	4170	600	30890	0.075	1.80×10^-1	30
NSS 20.9.23/5	5×2	23	85	165	2060	6280	500	30890	0.090	3.08×10^-1	35
NSS 20.9.25/6	6×2	23	85	165	2750	8340	460	30890	0.100	4.48×10^-1	43
NSS 20.9.33/8	8×2	23	85	165	5200	15700	300	30890	0.140	1.19	59
NSS 20.9.39/10	10×2	23	85	165	7850	23500	250	30890	0.170	2.25	79

Model	D	B	S	Z	G	N	M	K
NSS 7.3.7	70	74	36	25	48	3	M10	10
NSS 7.7.9	92	74	70	45	70	3	M10	10
NSS 10.9.12	120	101	90	50	90	3	M12	15
NSS 13.9.14	140	134	90	55	100	3	M16	22
NSS 16.10.16	160	155	100	60	115	3	M16	25
NSS 20.9.20	200	196	90	80	150	3	M20	30
NSS 20.9.20/4	200	196	90	80	150	4	M20	30
NSS 20.9.23/5	230	196	90	120	180	5	M20	30
NSS 20.9.25/6	250	196	90	120	200	6	M20	30
NSS 20.9.33/8	330	196	90	210	280	8	M20	30
NSS 20.9.39/10	390	196	90	250	340	10	M20	30