KTR FLANGE COUPLING MONOLASTIC® SAE

Let’s learn about KTR Flange Coupling MONOLASTIC® SAE 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 MONOLASTIC® SAE 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 VAROLASTIC® 

2. Features and Classification of KTR Flange Coupling MONOLASTIC® SAE

2.1. Key Features

– Manufacturer: KTR / Germany
– KTR Flange Coupling MONOLASTIC® SAE offers the following key features:
+ Compact, one-piece flexible design: MONOLASTIC® SAE combines a flexible flange element with a transmission hub, minimizing the number of components required for assembly. This compact construction is suitable for applications with limited installation space and direct connection to engine flywheels.
+ Available sizes: 30, 50, G50, 65, 75.
+ Nominal torque (TKN): 200–1,850 Nm.
+ Maximum torque (TK max.): 400–3,700 Nm.
+ Elastomer hardness: T65 / T70 Shore A. KTR offers elastomer elements with hardness ratings of 65 Shore A (T65) and 70 Shore A (T70). For the same coupling size, the T70 version provides a higher nominal torque capacity but also has greater torsional stiffness. Selection should be based on the system’s load characteristics and torsional vibration behavior, rather than maximum torque capacity alone.
+ Maximum operating speed: 6,000 rpm.
+ Shaft misalignment compensation: The coupling compensates for radial, angular, and axial shaft misalignment within the specified design limits.
* Permissible radial misalignment: 0.5 mm at 2,200 rpm.
* Permissible angular misalignment: 1° at 2,200 rpm.
+ Flange standard: SAE J620.
+ Easy axial installation: The hub design allows the driven shaft to be inserted into the coupling in the axial direction. This simplifies assembly and disassembly during maintenance, provided sufficient axial clearance is available.
Source: KTR MONOLASTIC® Catalogue and KTR-N 48510 EN Operating/Assembly Instructions, Tables 1 and 5. The specified limits may not always be applied simultaneously. Catalogue technical data are based on an ambient temperature of 60°C.

2.2. Construction and Operating Principle of KTR Flange Coupling MONOLASTIC® SAE

– Construction of KTR Flange Coupling MONOLASTIC® SAE: The coupling consists of four main components:
+ Elastomer Part: The main flexible component responsible for transmitting torque, damping torsional vibrations, and compensating for shaft misalignment.
+ Steel Hub: Connects the coupling to the driven equipment shaft. KTR offers hubs with keyways and spline bores to accommodate different shaft configurations.
+ Circlip (DIN 471): Secures the hub in its designated axial position within the coupling assembly.
+ Sealing Washer: Located at the hub assembly to help protect the connection area.
– The flexible flange assembly is mounted directly onto the engine flywheel and centered through the machined flange interface. For spline-bore versions, the hub is preassembled and lubricated at the factory, reducing installation work.
– Operating Principle: During operation, torque is transmitted from the engine flywheel through the flexible flange element to the steel hub and then to the driven shaft.
– Under load, the elastomer undergoes torsional deformation, helping to dampen vibrations transmitted from the engine to the pump. Its radial and angular flexibility also allows the coupling to accommodate shaft misalignment within the permissible limits.
– An important characteristic of MONOLASTIC® SAE is its relatively low restoring forces when compensating for misalignment, helping to minimize additional loads on the bearings of the driven equipment.

Related product: KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes

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

3. Applications of KTR Flange Coupling MONOLASTIC® SAE

KTR Flange Coupling MONOLASTIC® SAE is suitable for the following applications:
– Diesel Engine – Hydraulic Pump Systems: This is one of the primary applications specified by KTR. The coupling directly connects the diesel engine flywheel to the hydraulic pump shaft, helping to dampen torsional vibrations and compensate for misalignment between the two components.
– Multi-Pump Hydraulic Power Units: Suitable for hydraulic systems incorporating one or multiple pumps, where a compact connection between the engine and pump assembly is required while minimizing restoring forces caused by shaft misalignment.
– Industrial Machinery and Hydraulic Equipment: The coupling can be considered for construction machinery, mobile hydraulic equipment, and diesel-powered drive systems, provided that the flywheel configuration, pump shaft dimensions, and operating conditions comply with KTR specifications.

4. Technical Specifications of KTR Flange Coupling MONOLASTIC® SAE

Catalogue KTR Flange Coupling MONOLASTIC® SAE	Installation KTR Flange Coupling MONOLASTIC® SAE

Size	Elastomer Hardness (Shore A)	Nominal Torque TKN (Nm)	Maximum Torque TK max. (Nm)	Permissible Vibratory Torque TKW (Nm)
30	T65	200	400	100
30	T70	250	500	125
50	T65	350	700	175
50	T70	450	900	225
G50	T70	600	1,200	300
65	T65	750	1,500	375
65	T70	1,000	2,000	500
75	T65	1,500	3,000	750
75	T70	1,850	3,700	925

Technical Terms:
+ TKN – Nominal Torque: The rated torque that the coupling is designed to transmit under specified operating conditions.
+ TK max. – Maximum Torque: The maximum permissible torque under specified conditions.
+ TKW – Permissible Vibratory Torque: The permissible amplitude of fluctuating torque.
+ T65 / T70 – Elastomer Hardness: The hardness grades of the elastomer element, measured on the Shore A scale.
Note: Coupling selection must consider operating torque, peak torque, torsional vibrations, shaft dimensions, and the applicable SAE flywheel size. For diesel engine drives subject to cyclic torsional excitation, a torsional vibration calculation may be necessary.

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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