15940017261

Shenyang Shenke Power Machinery Co,. Ltd.

Language

R-type diaphragm coupling

The R-type structure ensures that the center of gravity on both sides is as close as possible to the support bearings of the two units, minimizing additional bending moments at the rotor shaft end and thereby promoting smooth, high-speed operation. The flexible components—comprising the half-coupling, diaphragm assembly, and protective sleeve—have been fully assembled prior to leaving the factory and are connected via a stop collar on the intermediate section, allowing for easy overall assembly and disassembly. Even after multiple reassemblies and disassemblies, this coupling maintains permanent alignment and dynamic balance. The large distance between the two flexible elements (diaphragms) enables the coupling to effectively absorb misalignment between the units. The intermediate section—being sufficiently long—can be removed to facilitate easy disassembly of the half-coupling from the shaft without requiring any movement of the entire unit (the same applies during installation). Shims at both ends of the intermediate section can be added or removed to compensate for installation errors and to conveniently achieve pre-tensioning, thereby accommodating thermal expansion or other dynamic misalignments of the units.

Detailed introduction

The R-type structure ensures that the center of gravity on both sides is as close as possible to the support bearings of the two units, minimizing additional bending moments at the rotor shaft end and thereby promoting smooth, high-speed operation. The flexible components—comprising the half-coupling, diaphragm assembly, and protective sleeve—have been fully assembled prior to leaving the factory and are connected to the intermediate section via a stop collar. The entire coupling can be installed and removed as a single unit, and even after multiple disassemblies and reassemblies, it maintains permanent alignment and dynamic balance. The large distance between the two flexible elements (diaphragms) enables the coupling to effectively absorb misalignment between the units. The intermediate section, which is sufficiently long, can be easily removed, allowing the half-coupling to be taken off the shaft without having to move the entire unit—this also applies during installation. Shims at both ends of the intermediate section can be added or removed to compensate for installation errors and to facilitate pre-stretching, thereby accommodating thermal expansion or other dynamic misalignments of the units.

Its structural configuration is shown in Figure 2.5, and the technical parameters and main dimensions are listed in Table 2-6 and Table 2-7.

Figure 2.5 R-type diaphragm coupling

Table 2-6: Main Dimensions of Type R Diaphragm Coupling

Model			A	bmax	L	Emin
6090			95	35	40	160
6120			122	50	55	170
6150			150	60	65	190
6170			170	65	70	210
6190			190	75	75	230
6210			210	85	85	230
6240	8240		240	105	100	250
6260	8260		265	115	110	260
6280	8280		280	125	120	260
6310	8310	1310	310	140	140	270
	8340	1340	340	150	150	290
	8370	1370	370	165	170	310
	8400	1400	400	180	180	320
	8430	1430	430	195	200	390
	8460	1460	460	205	210	400
		1490	490	220	220	410
		1520	516	235	235	450
		1560	560	255	250	460
		1600	600	280	290	480

Table 2-7 Technical Parameters of Type R Diaphragm Coupling

Model	Permissible Torque Coefficient (kW/rpm)	Nominal torque Mr. (KNm)	Peak torque (KNm)	Maximum rotational speed (rpm)	The entire coupling			Intermediate pipe per meter			Allow axial displacement		Allow angular misalignment (°)
Model	Permissible Torque Coefficient (kW/rpm)	Nominal torque Mr. (KNm)	Peak torque (KNm)	Maximum rotational speed (rpm)	Weight (kg)	Moment of inertia (kg·m²)	Torsional stiffness TS (Nm/rad)	Weight (kg)	Moment of inertia (kg·m²)	Torsional stiffness You (MNm/rad)	Coupling (mm)	Steering force (N)	Allow angular misalignment (°)
6090	0.05	0.5	0.62	35000	4.50	0.004	0.09	3.30	0.003	0.03	1.2	480	0.375
6120	0.11	1.1	1.37	30000	6.50	0.010	0.16	4.13	0.004	0.04	1.8	790	0.375
6150	0.17	1.7	2.12	26000	13.00	0.032	0.30	5.50	0.011	0.12	2.1	1000	0.375
6170	0.28	2.8	3.50	24000	19.00	0.070	0.43	6.14	0.015	0.16	2.9	1500	0.375
6190	0.48	4.8	6.00	22000	26.00	0.110	0.70	9.85	0.032	0.33	3.1	1800	0.375
6210	0.78	7.8	9.75	20000	34.00	0.170	1.18	12.70	0.052	0.55	3.5	1900	0.375
6240	1.20	12	15.00	17500	50.00	0.380	2.05	15.92	0.090	0.92	4.2	2600	0.375
6260	1.50	15	18.75	16800	61.00	0.560	2.63	18.56	0.180	1.90	4.6	2900	0.375
6280	1.75	17.5	21.87	16000	72.00	0.700	3.08	22.00	0.290	2.92	5.0	3300	0.375
6310	2.36	23.6	29.50	13500	88.00	1.100	5.10	29.94	0.300	3.05	5.5	4000	0.375
8240	1.5	15.0	18.75	17500	50.00	0.400	2.20	15.72	0.090	0.92	2.5	3000	0.250
8260	1.75	17.5	21.87	16000	61.00	0.560	2.63	18.56	0.180	1.90	2.8	3500	0.250
8280	2.68	26.8	33.50	16000	72.00	0.810	4.00	22.00	0.290	2.92	3.1	4000	0.250
8310	2.96	29.6	37.00	13500	89.00	1.200	5.50	29.94	0.300	3.05	3.8	4900	0.250
8340	3.75	37.5	46.87	12000	135.00	1.960	8.00	38.28	0.460	4.63	4.2	7000	0.250
8370	4.70	47.0	58.75	11000	160.00	3.000	10.50	47.50	0.690	6.95	4.6	8900	0.250
8400	6.30	63.0	78.75	10000	204.00	4.000	12.10	55.60	0.950	9.60	5.1	10000	0.250
8430	8.00	80.0	100.00	9500	275.00	6.000	15.00	63.80	1.350	13.90	5.9	12000	0.250
8460	8.50	85.0	106.25	9000	325.00	7.100	19.00	75.62	1.750	18.00	6.3	14000	0.250
8490	10.50	105.0	131.25	8500	385.00	11.200	23.00	80.60	2.100	22.00	6.8	15000	0.250
1310	3.92	39.2	49.85	13500	89.00	1.250	5.80	29.94	0.300	3.05	2.4	8000	0.165
1340	4.87	48.7	61.90	12000	136.00	2.000	8.30	38.28	0.460	4.63	2.8	15000	0.165
1370	6.25	62.5	79.35	11000	161.00	3.050	11.00	47.50	0.690	6.95	3.2	16500	0.165
1400	8.40	84.0	106.65	10000	205.00	4.080	12.50	55.60	0.950	9.60	3.6	19000	0.165
1430	10.65	106.5	135.50	9500	276.00	6.100	15.50	63.80	1.350	13.90	4.0	21000	0.165
1460	11.3	113.0	143.50	9000	326.00	7.200	19.60	75.60	1.750	18.00	4.3	22000	0.165
1490	14.00	140.0	177.80	8500	387.00	12.000	23.80	80.60	2.100	22.00	4.7	23000	0.165
1520	16.50	165.0	206.25	7700	468.00	16.500	25.00	86.00	2.550	26.00	5.0	27000	0.165
1560	18.30	183.0	228.75	7500	578.00	22.500	34.50	93.50	3.300	34.50	5.7	30000	0.165
1600	26.00	260.0	325.00	7000	660.00	29.200	45.80	142.00	5.200	54.71	6.2	35000	0.165

Note:
1. The parameters in the technical data sheet are all based on the dimensions provided in the size chart.
2. Users often request changes to the shaft-to-shaft distance E; the parameters of the deformed coupling can be easily calculated based on the data provided in the table.

T = Torsional stiffness
E = New spindle center distance
3. For other changes, please contact Schenker’s Engineering Department.
To better meet various application requirements, Schunk has launched a series of diaphragm couplings with special structures.
For details, please refer to the Schunk diaphragm coupling catalog.

Keywords

G-type diaphragm coupling

None

Online Consultation

Submit

%{tishi_zhanwei}%

Related Products

Diaphragm coupling

The diaphragm coupling is a metallic flexible coupling that can compensate for deviations in the radial, axial, and angular directions. Compared to conventional diaphragm couplings, it features a compact structure, strong corrosion resistance inherent in the diaphragm itself, high load-carrying capacity, light weight, and suitability for high rotational speeds.

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.

F-type diaphragm coupling

The F-type structure combines the advantages of both the R-type and G-type designs. For the same specification, the F-type has a greater shaft diameter capacity than the R-type and a smaller outer diameter than the G-type.

G-type diaphragm coupling

In addition to the key advantages of R-type couplings, the G-type coupling’s half-coupling features a larger shaft diameter capacity and can be manufactured with either straight bores or tapered bores (for hydraulic assembly and disassembly), or it can be conveniently connected to flanged shaft discs. The G-type is particularly well-suited for large electric motors, generators, or steam turbine units. Among all types of couplings, the G-type coupling is the easiest to assemble and disassemble.

R-type diaphragm coupling

NUP New Elastic Sleeve Pin Coupling

The NUP flexible coupling’s elastomer material is made of polyurethane reinforced with graphite, offering excellent toughness, self-lubrication, and wear resistance. It features a hollow-grid design and comes in three different elasticity options, providing superior vibration absorption and impact resistance. The conical-bore bolts ensure a tight fit that remains secure and does not loosen over time. Thanks to its high safety and reliability, as well as its outstanding vibration absorption and impact resistance, this coupling has received unanimous praise from more than 100 users. As a result, it has been awarded innovation funds by the Ministry of Science and Technology of China, the Provincial Department of Science and Technology, and the Municipal Science and Technology Commission.

NUPEX Combination Flexible Coupling

The NUPEX combination elastomeric coupling is a high-performance coupling developed and launched onto the market in 2000 by Schenck Power specifically for the characteristics of variable-frequency drive units. After successful application at the Jinxi Petrochemical Plant, more than 300 units have been installed to date, all operating smoothly and delivering excellent results.

GCLD Type Spherical Tooth Coupling

The drum-type gear coupling is a type of rigid-flexible coupling that can compensate for misalignment along the radial, axial, and angular directions. Compared with straight-tooth couplings, it offers advantages such as a compact structure, a small turning radius, high load-carrying capacity, high transmission efficiency, low noise, and a long maintenance interval.

GIICL-type drum-type gear coupling

GIICLZ-type drum-type gear coupling

WGT Type Drum-Type Gear Coupling

NGCL Type Spherical Tooth Coupling

The drum-type gear coupling is a type of rigid-flexible coupling that can compensate for misalignment along the radial, axial, and angular directions. Compared with straight-tooth couplings, it boasts advantages such as a compact structure, a small turning radius, high load-carrying capacity, high transmission efficiency, low noise, and a long maintenance interval.

Compensating capacity for relative displacement between the two shafts of a drum-type gear coupling

1) When there is no radial displacement between the two shaft axes, the permissible radial misalignment △α is as follows: For each pair of meshing internal and external teeth in a gear-type coupling with drum-shaped teeth, the permissible angular misalignment △α is 1°30'.

Wb-type rubber block coupling

The mechanical rubber coupling can transmit high torque and absorb impact generated by the rotating unit. It requires no lubrication, is easy to install and disassemble, and can operate in harsh environments such as those with moisture, sand, high temperatures, and other adverse conditions. It demands low maintenance and can significantly extend the service life of the equipment.

Cb-type rubber block coupling

LM-type梅花-shaped elastic coupling

The梅花-shaped elastic coupling consists of two identical half-couplings with claw-shaped protrusions and an elastic element. The梅花-shaped elastic element is placed between the claws of the two half-couplings to achieve their connection.

LMS-type梅花-shaped elastic coupling

The梅花-shaped elastic coupling consists of two identical half-couplings with claw-shaped protrusions and an elastic element. The梅花-shaped elastic element is positioned between the claws of the two half-couplings, thereby connecting them together.

Lx Elastic Pin Coupling

The Lx elastic pin coupling uses several non-metallic elastic pins inserted into the flange holes of the two coupling halves, thereby connecting the two halves via these pins. This coupling boasts a simple structure, is easy to manufacture, and allows for convenient installation, removal, and replacement of the elastic elements without requiring the two coupling halves to be moved.

Lz-type Elastic Pin-and-Tooth Coupling

The elastic pin-type gear coupling uses several pins made of non-metallic materials, which are inserted into mating holes between the two halves of the coupling and the inner surface of the outer ring. Torque is transmitted through these pins, thereby connecting the two halves of the coupling.

LZZ Type Elastic Pin-and-Block Coupling with Brake Wheel

Shenyang Shenke Power Machinery Co,. Ltd.

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

Email:sincflex@vip.163.com

Phone:+86 24 25830257
Mobile phone:+86 15940017261

Fax: +86 24 25308993

WeChat contact

Business license

sincflex@vip.163.com

8615940017261

+862425830257