Let’s learn about KTR Flange Coupling SINULASTIC® A 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® A 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® A
2.1. Key Features
– Manufacturer: KTR / Germany
– The distinguishing feature of the KTR SINULASTIC® A lies in its sinusoidal tooth profile between the elastomer element and the flange ring.
– This design has been optimized by KTR to improve contact between torque-transmitting surfaces, particularly when the drive system is subjected to fluctuating loads or reversing torque.
– The KTR Flange Coupling SINULASTIC® A is suitable for drive systems requiring axial plug-in assembly and various shaft connection configurations.
2.2. Construction and Operating Principle of KTR Flange Coupling SINULASTIC® A
– The KTR SINULASTIC® A consists of the following main components:
+ Connecting flange: Connects to the engine flywheel or engine-side flange.
+ Elastomer element: A rubber component responsible for torque transmission and torsional vibration damping.
+ Hub: Connects the coupling to the shaft of the driven equipment.
+ Toothed engagement area: Enables torque transmission between the elastomer element and the connecting flange through geometric engagement.
– In the KTR Flange Coupling SINULASTIC® A design, the hub is vulcanized and bonded to the elastomer element. When the engine rotates, torque is transmitted from the engine flange through the toothed engagement area to the elastomer element, then to the hub and the driven shaft.
– During torque transmission, the rubber element undergoes elastic deformation, helping reduce the effects of torsional vibrations.
– Thanks to its toothed engagement structure, the KTR Flange Coupling SINULASTIC® A can be assembled axially, making certain installation and maintenance operations more convenient.
– Additional technical advantages:
+ Flexible shaft connections: Multiple hub configurations accommodate different shaft designs.
+ Convenient assembly: The toothed engagement structure allows axial connection, which is useful when separating the engine and driven equipment.
+ Torsional vibration damping: The elastomer element helps reduce the transmission of vibrations generated by the engine.
+ Optimized contact design: The sinusoidal tooth profile is developed to accommodate fluctuating load conditions.
+ Multiple elastomer options: Different rubber materials and hardness grades can be selected according to the characteristics of the drive system.
Related product: KTR Flange Coupling SINULASTIC® T
| FOR ANY INQUIRIES OR QUOTATION REQUESTS, PLEASE CONTACT: SALES DEPARTMENT HOTLINE: (+84) 0906 955 057 – EMAIL: INFO@DHP-CORP.COM.VN |
2.3. KTR Flange Coupling SINULASTIC® A Versions
– The KTR Flange Coupling SINULASTIC® A series is available in several versions to meet different shaft connection and installation requirements.
+ SINULASTIC® AK: Short-hub version, suitable for configurations requiring a shorter hub length.
+ SINULASTIC® AL: Long-hub version, suitable for applications requiring a longer shaft connection length.
+ SINULASTIC® AKC: Short-hub version with a clamping ring connection, featuring a specialized shaft clamping structure.
+ SINULASTIC® ALC: Long-hub version combined with a clamping ring mechanism.
– For the AK and AL versions, KTR offers various shaft connection options, including keyways, splines, clamping hubs, and other fit configurations, depending on the selected design.
– For the AKC and ALC versions, the clamping ring mechanism is the main distinguishing feature. The appropriate version should be selected based on the shaft drawing, connection type, and available installation space rather than shaft diameter alone.
3. Applications of KTR Flange Coupling SINULASTIC® A
– The KTR Flange Coupling SINULASTIC® A is particularly worth considering for drive systems powered by internal combustion engines, including:
+ Diesel engines connected to electric generators.
+ Diesel engines connected to gearboxes or power transmission units.
+ Industrial pumping systems driven by diesel engines.
+ Drive units requiring torsional vibration damping.
– These applications are consistent with the technical functions of the product. However, this does not mean that every machine within these categories can use SINULASTIC® A without proper engineering calculations.
4. Technical Specifications of KTR Flange Coupling SINULASTIC® A
According to KTR technical documentation KTR-N 48710 EN, the SINULASTIC® A series is available in nominal sizes 20, 28, 38, 53, 96, 114, 140, and 180.
For complete technical specifications, coupling configurations, and installation requirements, please refer to the corresponding KTR technical documentation.
| Catalogue KTR Flange Coupling SINULASTIC® A |
Installation KTR Flange Coupling SINULASTIC® A |

| Size | Rated Torque TKN (Nm), NR | Maximum Bore AK/AL |
|---|---|---|
| 20 | 1,800–2,850 | 80 mm |
| 28 | 2,200–3,750 | 115 mm |
| 38 | 3,100–5,100 | 115 mm |
| 53 | 4,200–7,000 | 115 mm |
| 96 | 8,100–13,200 | 175 mm |
| 114 | 10,000–15,600 | 175 mm |
| 140 | 13,000–19,000 | 175 mm |
| 180 | 16,000–25,000 | 175 mm |
Note: The rated torque values refer to the NR elastomer configuration. Actual coupling selection must consider the operating conditions and the complete drive system.
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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– Hotline: +84906.955.057 | – Email: info@dhp-corp.com.vn
– Website: https://en.daihongphat.asia/ – https://khopnoitruc.com/ – https://ringfeder.com.vn/








