merits

The merits of JAC composite coupling
The JAC composite coupling is designed to be applied to the facility like a high-speed cooling tower which definitely needs a long axis. This axis has very long DBSE(Distance Between Shalt Ends). Therefore, if we use steel materials as an axis, it tends to cause a big deflection phenomenon during rotation because of its self­load.

In this case, we have to use the fixture and bearings to support the riddle pari ol the long axis to minimize the deflection as shown

However, the long axis of the coupling made of the composite material which weighs only 20 % of the steel material can reduce deflection conspicuously compared to the same standard coupling made of the steel material. Once the composite material is used, the length of the axis can be extended by as much as 80% without using the fixtu任 and bearings as shown in the piicture below.

Quality Assurance

Rotation quality is guaranteed through 100% balancing test in accordance with 1SO1940-1 6.3 grade
Peak torque is guaranteed through the regular bond-strength test

Design

Owing to the low gravity of the carbon-composite material, the weight ol JAC composite coupling is about 20% of the coupling made by the steel material. Once the composite material is 니sed，the length of the axis of JAC composite coupling can be enlarged by 80% more than the axis of the coupling made by the steel material without using the fixture and bearings while transmitting power at high speed.

As the surface is coated to prevent the moisture absorption of composite materials, the high fatigue life is guaranteed even though they are exposed to the corrosion environrrent

Bonding of composite material and metal

As it is designed in the form of aggregation structure with the groove type to secure the solid bonding of stainless flange and composite spacer used the composite materials, JAC composite coupling minimize the radial displacement while the rotation lasts at high speed and the stress distribution of the bonding surface following the bonding structure was approved by the finite element analysis and the related test.

Dimension table for the standard products

	Continus Torque		Peak Torque		Max.DBSE (mm)		D	A	B (mm)		Max.Bore (mm)		C (mm)
Model No.	Nm	kgf m	Nm	kgf.m	分 1780 RPM	@1480 RPM	(mm)	(mm)	N (Stan -dad	U (Over Size)	N (Stan -dad	U (Over Size)	N (Stan -dad	U (Over Size)
JCT-133	820	83.7	1,229	125.4	2,500	2,500	70	133	80	102	55	75	45	57
					3,000	3.000	86
JCT-152	1,243	126.8	1,864	190.2	3,581	3,912	108	152	94	121	70	85	64	70
					4,318	4,800	1 的
					3,581	3,912	108
JCT-171	2,045	208.7	3,067	312.9	4,318	4,800	159	171	108	133	80	100	65	70
					4,902	5,461	210
JCT-229	4,090	417.3	6,135	626.0	4,318	4,800	159	229	147	191	105	130	64	64

NOTE) 표기된 중향은 내경 가공이 없는 상대의 중량임

How to read the marking method for the standard JAC composite coupling

How to select the suitable composite coupling for the cooling tower