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Shenyang Shenke Power Machinery Co,. Ltd.

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T-type and D-type diaphragm couplings

The diaphragm coupling compensates for the relative displacement between the two connected shafts through the elastic deformation of its diaphragm, making it a high-performance, metal-based flexible coupling with strong mechanical properties.

Detailed introduction

Product Features
The diaphragm coupling compensates for the relative displacement between the two connected shafts through the elastic deformation of its diaphragm, making it a high-performance, metal-based flexible coupling with strong mechanical properties.
1. It has strong capability to compensate for misalignment between the two shafts; compared with gear couplings, it can accommodate twice as much angular displacement. When there is radial displacement, the reaction force is small, and its flexibility is high, allowing for certain axial, radial, and angular displacements.
2. It has a noticeable shock-absorbing effect, produces no noise, and is wear-free.
3. Able to operate safely under high-temperature conditions (-80~+300) and in harsh environments, and capable of reliable operation even under impact and vibration conditions.
4. High transmission efficiency, reaching up to 99.86%. Particularly suitable for medium- and high-speed, high-power transmissions.
5. Simple structure, lightweight, compact size, and easy to assemble and disassemble. Assembly and disassembly can be carried out without moving the machine (referring to models with an intermediate shaft), and no lubrication is required.
6. It can accurately transmit rotational speed with no slip during operation, making it suitable for the transmission of precision machinery.

Application scenarios
Widely used in shaft transmission systems for various mechanical devices, such as pumps (especially high-power and chemical pumps), fans, compressors, hydraulic machinery, petroleum equipment, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aerospace (helicopters), high-speed propulsion systems for ships, steam turbines, reciprocating power machinery transmission systems, tracked vehicles, and high-speed, high-power mechanical transmission systems for generator sets—after dynamic balancing, their application in high-speed shaft transmission systems has become quite common.

T-type and D-type diaphragm couplings
It features a simple structure for easy disassembly and assembly, small size, light weight, high torque transmission capability, excellent ability to accommodate misalignment in the equipment set, effective noise reduction and vibration damping, and is safe, reliable, maintenance-free, and boasts a long service life. It is suitable for various rotating equipment such as pumps, blowers, mills, rolling mills, and more.
The structural configurations are shown in Figures 2.1 and 2.2, and the technical parameters and main dimensions are listed in Table 2-1.

Figure 2.1 T-type diaphragm coupling

Figure 2.2 Type D Diaphragm Coupling

Table 2-1: Technical Parameters and Main Dimensions of T-Type and D-Type Diaphragm Couplings

Model	Permissible Torque Coefficient TN (kW/rpm)	Nominal torque Mr. (KNm)	Peak torque Tmax (KNm)	Permissible Rotational Speed n (rpm)	Outer diameter A (mm)	Shaft hole b Max (mm)	Shaft extension L Max (mm)	Axle spacing Emin (mm)		Weight (kg)	Moment of inertia kg·m²	Misalignment Compensation Amount
Model	Permissible Torque Coefficient TN (kW/rpm)	Nominal torque Mr. (KNm)	Peak torque Tmax (KNm)	Permissible Rotational Speed n (rpm)	Outer diameter A (mm)	Shaft hole b Max (mm)	Shaft extension L Max (mm)	T-shaped	Type D	Weight (kg)	Moment of inertia kg·m²	Axial (mm)	Angular direction (Degree)
6090	0.05	0.5	0.62	35000	95	38	50	85	2	2.50	0.003	2	0.500
6120	0.11	1.1	1.37	30000	122	42	60	110	3	5.50	0.009	3	0.500
6150	0.17	1.7	2.12	26000	150	65	70	110	3	10.60	0.03	3	0.375
6170	0.28	2.8	3.50	24000	170	80	80	125	3	14.90	0.05	3	0.375
6190	0.48	4.8	6.00	22000	190	90	100	140	3	21.60	0.09	3	0.375
6210	0.78	7.8	9.75	20000	210	100	110	145	3	29.30	0.16	3	0.375
6240	1.2	12	15.00	17500	240	120	135	160	3	47.00	0.33	3	0.375
6260	1.5	15	18.75	17000	265	130	150	170	3	55.00	0.54	3	0.375
6280	1.75	17.5	21.87	16000	280	140	160	175	3	72.20	0.67	3	0.375
8310	2.96	29.6	37.00	13500	310	155	180	200	4	106.20	1.20	4	0.250
8340	3.75	37.5	46.87	12000	340	170	200	230	4	138.20	1.92	4	0.250
8370	4.70	47.0	58.75	11000	370	185	220	240	4	176.90	3.63	4	0.250
8400	6.30	63.0	78.75	10000	400	200	235	250	4	226.80	4.32	4	0.250
8430	8.00	80.0	100.00	9500	430	210	245	285	4	282.60	6.4	4	0.250
8460	8.50	85.0	106.25	8900	460	230	270	295	5	345.00	8.9	5	0.250
8490	10.50	105.0	131.25	8200	490	245	290	305	5	404.00	12	5	0.250
1520	16.50	165.0	206.25	7500	516	255	325	340	5	508.60	17	5	0.165
1560	18.30	183.0	228.75	7100	560	280	350	340	6	645.00	17	6	0.165
1600	26.00	260.0	325.00	6500	600	310	380	370	6	823.60	27	6	0.165
1650	39.00	390.0	487.50	5800	650	330	410	400	6	1054.8	54	6	0.165
1720	52.50	525.0	656.25	5400	720	360	445	420	6	1258.0	81	6	0.165
1800	82.50	825.0	1031.25	4200	800	410	520	440	7	2007.0	159	7	0.165
1890	112.50	1125.0	1406.25	3500	890	445	600	440	7	2866.0	289	7	0.165
1990	160.0	1600.0	2000	3000	990	500	720	460	7	4580.0	557	7	0.165

Note: The data in the table can be adjusted according to user unit requirements.
　　The data for Type D is about half that of Type T.

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Shenyang Shenke Power Machinery Co,. Ltd.

Address: No. 34 Jia, Kaifa Avenue, Tiexi Economic and Technological Development Zone, Shenyang

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