KTR FLANGE COUPLING SINULASTIC® V

Let’s learn about KTR Flange Coupling SINULASTIC® V with Dai Hong Phat, through the following article!

1. About Dai Hong Phat Corp- KTR Germany

– Dai Hong Phat Corp is the official authorized representative of KTR Germany in Vietnam (KTR Vietnam). We provide genuine transmission shaft coupling solutions, meeting international standards, helping to optimize the performance and durability of machinery systems.
– KTR was established in 1959 in Germany. KTR is an abbreviation of
K – Kupplung (Coupling) | T – Technology (Technology) | R – Rheine (Region)
– KTR products: Rotex shaft coupling, Clampex shaft locking joint, hydraulic brake, …
– KTR Flange Coupling SINULASTIC® V products supplied by Dai Hong Phat are 100% genuine imported, with full CO/CQ, meeting international quality standards.

Certificate of Dai Hong Phat as Authorized Distributor of KTR Germany in Vietnam

View more: Other KTR Flange Coupling SINULASTIC® 

2. Features and Types of KTR Flange Coupling SINULASTIC® V

2.1. Key Features

– Manufacturer: KTR / Germany.
– The KTR Flange Coupling SINULASTIC® V features high torsional flexibility, a linear torsional stiffness characteristic, and effective torsional vibration damping in drive systems subjected to fluctuating loads.
– Its flange design incorporates a two-piece clamping ring assembly, allowing radial replacement of the elastomer element. This feature facilitates maintenance without requiring complete disassembly of the drive system, provided that the installation conditions allow sufficient access.
– The KTR Flange Coupling SINULASTIC® V is available in eight standard sizes, ranging from size 20 to 180, with a rated torque range of 1,750–22,000 Nm, maximum rotational speeds of 2,400–3,800 rpm, and maximum shaft bore diameters of up to 165 mm, depending on the coupling size and elastomer hardness grade.
– The coupling supports flange connections according to SAE J620 and various hub configurations, including keyed connections, splined connections, clamping hubs, and interference fits.
– Depending on the coupling size, SINULASTIC® V provides allowable axial displacement of ±2 to ±4 mm, radial displacement of 0.8–1.5 mm, and angular misalignment of 0.6°–1.0° at 1,500 rpm.
– In addition, the coupling can function as a cardanic offset element in appropriately engineered configurations, providing further flexibility for shaft connection and alignment requirements in industrial drive systems.

2.2. Construction and Operating Principle of KTR Flange Coupling SINULASTIC® V

– The KTR Flange Coupling SINULASTIC® V incorporates a disc-shaped elastomer element, a hub, and a two-piece clamping ring assembly to form a highly flexible flange coupling.
– According to the exploded assembly drawing on page 9 of the KTR technical documentation, the coupling consists of five main component groups: the elastomer element, hub, split clamping ring, socket head cap screws, and setscrew.
– Main Components and Functions
+ Elastomer Element: Transmits torque between the engine flywheel flange and the hub while absorbing part of the torsional vibration energy through elastic deformation.
+ Hub: Connects the coupling to the driven equipment shaft. KTR offers various hub connection configurations to accommodate different shaft designs and application requirements.
+ Split Clamping Ring (Slotted Ring / Two Half Rings): A key distinguishing feature of the SINULASTIC® V design. The two half rings are installed between the elastomer element and the hub and secured using specified high-strength bolts.
– This construction allows the connection to be assembled and disassembled radially, making it possible to replace the elastomer element without necessarily moving the entire machinery assembly in the axial direction.
Operating Principle
– During operation, torque is transmitted from the engine flywheel through the elastomer element, split clamping ring assembly, and hub to the driven equipment shaft.
– The torsional flexibility of the rubber element helps control the dynamic response of the drive system to cyclic torque fluctuations, reducing the transmission of torsional vibrations between connected components.

Related product: KTR Flange Coupling SINULASTIC® B

FOR ANY INQUIRIES OR QUOTATION REQUESTS, PLEASE CONTACT: SALES DEPARTMENT HOTLINE: (+84) 0906 955 057 – EMAIL: INFO@DHP-CORP.COM.VN

2.3. Installation, Operation and Maintenance Requirements for KTR Flange Coupling SINULASTIC® V

– Installation: Before installation, the shaft diameter, hub connection type, engine flywheel flange, installation dimensions, and specified bolt tightening torques must be carefully verified. According to KTR-N 48712 EN, the two half rings must be correctly positioned and secured using the specified tightening torque for each coupling size. For example, the tightening torques for the split clamping ring bolts are: Size 20: 120 Nm, Sizes 28–53: 300 Nm, Sizes 96–180: 590 Nm. These tightening torque values apply only to the corresponding bolt types and specifications stated in the KTR technical documentation.
– Shaft Alignment: The coupling’s misalignment compensation capability does not eliminate the need for accurate shaft alignment. Radial and angular misalignment should be kept as low as possible to minimize additional stress on the elastomer element and extend the coupling’s service life. The permissible displacement values specified by KTR are based on standard operating conditions at ambient temperatures of up to 80°C.
– Maintenance: KTR recommends performing a visual inspection of the coupling at least once a year, with particular attention to the condition of the elastomer element, the integrity of the connections, bolt tightening torques, and shaft alignment. If a crack in the designated inspection area reaches or exceeds a depth of 3 mm, the elastomer element must be replaced.
– Operating Temperature: The KTR installation manual specifies a temperature range of -30°C to +80°C in its troubleshooting section concerning elastomer damage caused by excessive temperatures. KTR also offers elastomer material options, including Natural Rubber (NR), EPDM, and Silicone Rubber (SI). For applications requiring higher operating temperatures, the permissible temperature range must be confirmed according to the specific elastomer material, coupling configuration, and actual operating conditions. It should not be assumed that all SINULASTIC® V configurations have the same temperature resistance.

3. Applications of KTR Flange Coupling SINULASTIC® V

– The KTR Flange Coupling SINULASTIC® V is suitable for consideration in drive systems requiring torsional vibration damping, shaft misalignment compensation, and convenient maintenance access.
– Typical applications include:
+ Diesel Engine Drive Systems: Industrial drive arrangements powered by diesel engines that generate cyclic torque fluctuations.
+ Diesel Generator Sets: Connections between diesel engines and electric generators where torsional vibration damping is required.
+ Reciprocating Pumps: Pump drive systems subjected to cyclic torque variations.
+ Reciprocating Compressors: Industrial compressor drive systems experiencing fluctuating loads and torsional vibrations.
+ Fixed Machinery Installations: Drive assemblies where the engine and driven equipment are installed in fixed positions, making axial movement difficult during maintenance.
– According to KTR, the SINULASTIC® coupling series was primarily developed for drive systems powered by internal combustion engines, although it can also be used in other industrial power transmission applications.
– The KTR Flange Coupling SINULASTIC® V version is particularly suitable for applications where an axial plug-in connection is not required and radial assembly and elastomer replacement are preferred.
– The final coupling selection must consider operating torque, rotational speed, load characteristics, shaft connection dimensions, installation conditions, and torsional vibration analysis where applicable.

4. Technical Specifications of KTR Flange Coupling SINULASTIC® V

Catalogue KTR Flange Coupling SINULASTIC® V	Installation KTR Flange Coupling SINULASTIC® V

Size	Mô-men TKN (Nm)	Lỗ trục tối đa (mm)	Tốc độ nmax (rpm)
20	1.750–2.500	70	3.600–3.800
28	2.200–3.400	110	3.200–3.600
38	3.000–4.600	110	3.200–3.600
53	4.000–6.200	110	3.000–3.400
96	7.800–11.200	160	2.600–3.000
114	9.200–13.400	160	2.600–2.800
140	12.000–16.200	165	2.400–2.800
180	14.600–22.000	165	2.400–2.600

5. Why choose Dai Hong Phat Corp?

– 100% genuine products imported directly from KTR Germany
– Protect customers from counterfeit goods and always provide full CO/CQ documents.
– Goods in stock, fast delivery nationwide 24/7.
– Free technical consultation and support for drawings, catalogs.
– Refined processing workshop to meet individual requirements.

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