KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes

Let’s learn about KTR Flange Coupling MONOLASTIC® Type with 3 Holes 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® Type with 3 Holes 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® Type with 3 Holes

2.1. Key Features

– Manufacturer: KTR / Germany
– Product: KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes
– The KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes offers the following key features:
+ Torsional Vibration Damping: The elastomer element absorbs part of the torsional vibrations generated during power transmission, helping reduce vibration-related stress on mechanical components.
+ Shaft Misalignment Compensation: Compensates for radial, angular, and axial shaft misalignments within specified technical limits, supporting stable operation under minor installation deviations.
* Permissible radial displacement: 0.5–0.6 mm at 2,200 rpm.
* Permissible angular displacement: Up to 1° at 2,200 rpm.
* Permissible axial displacement: ±1 mm, subject to specified installation conditions.
+ Compact Integrated Design: The flexible flange and hub form a compact assembly, making the coupling suitable for drive systems with limited axial installation space.
+ Three-Hole Flange Connection: Features three bolt mounting positions for connection to the equipment flange. Flange dimensions and bolt-hole spacing must be verified before selection.
+ Easy Axial Plug-In Assembly: The hub design allows axial engagement, simplifying installation, disassembly, and maintenance.
+ Elastomer Hardness Options: Available with T65 and T70 Shore A elastomer compounds, allowing selection of suitable torsional flexibility according to torque requirements and operating conditions.
+ Available Sizes: 22, 28, 32, 50-140, 50-165, 50-170, and 60-165.
+ Nominal Torque (TKN): 40–400 Nm.
+ Maximum Torque (TKmax): 100–1,000 Nm.
+ Maximum Permissible Operating Speed: 6,000 rpm.
Source: KTR MONOLASTIC® Catalogue, page 216, and KTR-N 48510 EN Operating/Assembly Instructions, Tables 1 and 5. The specified technical limits cannot necessarily be applied simultaneously. Catalogue performance data are based on an ambient temperature of 60°C.

2.2. Construction and Operating Principle of KTR Flange Coupling MONOLASTIC® Type with 3 Holes

– Construction: The KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes is supplied as a pre-assembled unit consisting of four main components:
+ Elastomer Element: The flexible component responsible for transmitting torque and damping torsional vibrations. Available in T65 or T70 Shore A hardness.
+ Metal Hub: Connects the coupling to the driven shaft. A steel hub with a spline bore is commonly used. KTR also specifies hub configurations with keyways in its assembly instructions.
+ Circlip (DIN 471): Retains the hub in its designated axial position within the coupling assembly.
+ Sealing Washer: An additional component included in the coupling assembly.
– The coupling features a three-hole flange connection and does not require a centering recess in the engine flywheel. According to KTR, centering is achieved through the connecting bolts.
– Operating Principle:
+ During operation, torque is transmitted from the engine flywheel through the flange and elastomer element to the hub, which then transfers power to the hydraulic pump shaft.
+ The elastomer element undergoes controlled torsional deformation, helping damp torque fluctuations while compensating for minor misalignments between the engine and pump shafts.
+ Thanks to its flexible characteristics and relatively low restoring forces under radial or angular misalignment, the MONOLASTIC® coupling is particularly suitable for single and multiple hydraulic pump drive systems.
Technical Note: Misalignment compensation does not eliminate the need for proper shaft alignment. Keeping shaft misalignment as low as possible helps improve operating conditions and extend coupling service life.

Related product: KTR Flange Coupling MONOLASTIC® SAE

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® Type with 3 Holes

-The KTR FLANGE COUPLING MONOLASTIC® Type with 3 Holes is primarily designed for power transmission between diesel engines and hydraulic pumps. According to KTR, the coupling series is suitable for applications with engine power ratings of up to 250 kW.
– Typical applications include:
+ Diesel-Driven Hydraulic Power Units: Connects the engine flywheel to the hydraulic pump shaft, transmitting torque while reducing the effects of torsional vibrations.
+ Construction Machinery and Mobile Hydraulic Equipment: Suitable for compact diesel engine–hydraulic pump drive assemblies where installation space is limited.
+ Single and Multiple Hydraulic Pump Systems: Provides a flexible drive connection for hydraulic pump assemblies operating within the specified shaft misalignment limits.
Equipment with SAE or DIN Pump Shafts: Can be supplied with compatible spline hub configurations to accommodate hydraulic pump shaft connections.

4. Technical Specifications of KTR Flange Coupling MONOLASTIC® Type with 3 Holes

Catalogue KTR Flange Coupling MONOLASTIC® Type with 3 Holes	Installation KTR Flange Coupling MONOLASTIC® Type with 3 Holes

Size	Elastomer Hardness (Shore A)	TKN (Nm)	TKmax (Nm)	TKW (Nm)	ØD (mm)	ØDA (mm)
22	T65	40	100	20	20	100
28	T65	70	175	35	25	124
28	T70	100	250	50	25	124
32	T65	160	400	80	32	150
32	T70	225	562	112	32	150
50-140	T70	260	650	130	32	175
50-165	T70	300	750	150	32	200
50-170	T70	300	750	150	32	200
60-165	T70	400	1,000	200	48	205

– Technical Parameter Definitions:
+ TKN: Nominal torque.
+ TKmax: Maximum torque.
+ TKW: Permissible alternating torque amplitude.
+ ØD: Hub bore diameter according to the dimensional table.
+ ØDA: Overall outside diameter of the coupling.
Source: KTR MONOLASTIC® Catalogue and KTR-N 48510 EN Operating/Assembly Instructions. Final coupling selection must consider operating torque, peak loads, torsional vibrations, shaft dimensions, flange compatibility, and installation conditions.

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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