KTR FLANGE COUPLING VAROLASTIC® F

Let’s learn about KTR Flange Coupling VAROLASTIC® F 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 VAROLASTIC® F 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 VAROLASTIC® F

2.1. Key Features

– Manufacturer: KTR / Germany
– KTR Flange Coupling VAROLASTIC® F is a highly flexible flange coupling designed for reliable torque transmission, torsional vibration damping, and drivetrain protection under variable load conditions.
– Vibration and Shock Damping: Equipped with EPDM elastomer rollers that absorb torsional vibrations and minimize the impact of sudden load changes on engines, gearboxes, and other drivetrain components.
– Progressive Torsional Stiffness: Provides high torsional flexibility at low loads, with stiffness progressively increasing as torque rises, allowing the coupling to adapt to different operating conditions.
– High Torque Transmission Capacity: Available in six sizes, ranging from 80 to 600, with nominal torque ratings from 800 to 6,000 Nm.
– High Temperature Resistance: Synthetic EPDM rubber rollers can withstand continuous operating temperatures of up to 120°C, making them suitable for various industrial environments.
– Shaft Misalignment Compensation: Accommodates axial, radial, and angular misalignments within specified limits, helping reduce reaction forces on bearings and connected components.
– Compact Design and Easy Installation: Features a compact flange design with axial plug-in assembly, simplifying installation and maintenance.
– Versatile Connection Options: Compatible with SAE J620 flywheel connections and various hub configurations, including keyed hubs, splined hubs, and clamping hubs.
– Reduced Maintenance Requirements: Simple construction eliminates the need for periodic lubrication. Elastomer rollers should be inspected and replaced according to their operating condition.

2.2. Construction and Operating Principle of KTR Flange Coupling VAROLASTIC® F

Construction: The KTR Flange Coupling VAROLASTIC® F consists of the following main components:
– Connection Flange: Connects directly to the engine flywheel or through an adapter flange.
– Inner Component: Receives torque transmitted through the elastomer rollers and transfers it to the coupling hub.
– Elastomer Rollers: Manufactured from synthetic EPDM rubber, these elements transmit torque, damp torsional vibrations, and absorb shocks.
– Hub: Connects the coupling to the driven machine shaft using a suitable shaft-hub connection.
– Cap Screws and Locking Washers: Secure the coupling components and maintain reliable connections during operation.
Operating Principle: The KTR Flange Coupling VAROLASTIC® F transmits torque from the engine flywheel through the connection flange, EPDM elastomer rollers, inner component, and hub to the driven machine shaft.
Its key characteristic is Progressive Torsional Stiffness, which enables the coupling to respond to different load conditions:
– Under Low Loads: The EPDM rollers provide high torsional flexibility, reducing torsional vibrations and limiting vibration transmission between the engine and driven equipment.
– As Load Increases: The elastomer rollers deform progressively, increasing torsional stiffness and allowing the coupling to accommodate higher transmitted torque.
– During Sudden Load Changes: The elastic and damping properties of EPDM help minimize the impact of torque fluctuations and shock loads on drivetrain components.
Thanks to this operating principle, KTR VAROLASTIC® F provides efficient torque transmission, effective torsional vibration damping, and drivetrain protection in applications with variable operating loads.

Related product: KTR Flange Coupling VAROLASTIC® FD

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 VAROLASTIC® F

– The KTR Flange Coupling VAROLASTIC® F is particularly suitable for main drive systems operating under variable speed and load conditions, including engine-gearbox configurations and applications requiring reliable torque transmission under occasional overload conditions within the coupling’s specified limits.
– Typical applications include:
+ Internal Combustion Engine Drives: Helps damp torsional vibrations and reduce torque fluctuations generated by combustion engines.
+ Engine and Gearbox Systems: Provides flexible torque transmission between engines and gearboxes, helping protect drivetrain components against vibration and shock loads.
+ Piston Pumps and Reciprocating Compressors: Reduces the effects of cyclic torque fluctuations and torsional vibrations during operation.
+ Industrial Machinery and Production Lines: Suitable for mechanical drive systems with variable loads, where torsional flexibility and vibration damping are required.

4. Technical Specifications of KTR Flange Coupling VAROLASTIC® F

According to KTR technical documentation KTR-N 48710 EN, the VAROLASTIC® F 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 VAROLASTIC® F	Installation KTR Flange Coupling VAROLASTIC® F

Size	Nominal Torque TKN (Nm)	Operating Speed n (rpm)	Maximum Speed nmax (rpm)	Maximum Bore Diameter (mm)
80	800	3,600	4,500	50
160	1,600	3,200	4,000	70
240	2,400	2,500	3,200	60
300	3,000	2,400	3,000	80
450	4,500	2,250	2,800	90
600	6,000	2,100	2,600	110

Technical Notes:
+ TKN: (Nominal Torque): The rated torque that the coupling can transmit continuously under specified operating conditions.
+ n: (Operating Speed): The specified operating speed of the coupling.
+ nmax: (Maximum Speed): The maximum permissible rotational speed.
Maximum Bore Diameter: The largest permissible finished bore diameter for the coupling hub.
Source: KTR VAROLASTIC® F Operating/Assembly Instructions, KTR-N 48810 EN, Edition 2, 2024.

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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