Comparison of 5 Common Types of Shaft Couplings in Mechanical Industry

In industrial transmission systems, mechanical shaft coupling plays an important role in transmitting torque between two rotating shafts, while absorbing vibrations and compensating for shaft misalignment. Choosing the right type of coupling helps increase equipment life and improve operating efficiency.
With more than 15 years of experience in providing transmission shaft solutions, Dai Hong Phat is proud to be the official authorized representative in Vietnam of the world’s leading brands such as Ringfeder, KTR, PT, Rathi-Lovejoy, Martin, Fenner, Westcar, Crossmorse, Italgiunti, etc. We are committed to providing high-quality, genuine shaft coupling products and optimal solutions for each industry.
Here are the 5 most popular types of Shaft Couplings in mechanical industry today:

Top 5 popular shaft couplings in the mechanical industry:

1. TNM Ringfeder (Normex) coupling:

A product of the Ringfeder brand from Germany, TNM Ringfeder shaft couplings use elastic rubber cushions to reduce vibration, absorb shock and increase transmission efficiency.
– Consists of 2 hubs and shock absorber rings. The coupling has 18 different sizes.
– Torque [Nm]: TKN Pb72: 13 – 27000Nm; TKN Pb82: 20-41000Nm
– Speed ​​[rpm]: 1800 – 5000 rpm
– Temperature range: -30oC to + 100 oC
– Shaft bore d1: 19-230mm; d2: 19-230mm
– Designed with two identical parts.

Advantages:
– Quiet operation.
– Easy to install and maintain.
– Good resistance to heat and chemicals.
– Applications: Pumps, industrial motors, centrifugal fans.

See more product details: Ringfeder TNM E Shaft Couplings

2. Rotex KTR damped shaft coupling:

Rotex KTR coupling is a prominent product line thanks to its compact, flexible design, specialized in high-precision transmission systems.
– Consists of 2 hubs and damping washers. The coupling has 16 different sizes.
– Maximum torque [Nm] up to 56000 Nm
– Shaft bore d1: 19-200mm
– All sizes of KTR Rotex Standard have a maximum twist angle of 5º. They can be installed both vertically and horizontally.
– T-PUR spider washers have different Shore hardnesses of 92ShA, 98ShA, 64ShA.
– This coupling can be considered a pioneer in the compact flexible shaft coupling line, so they are often counterfeited. Customers should note to buy genuine products from KTR Vietnam agents.

Advantages:
– Good shaft misalignment compensation.
– No lubrication required.
– Stable operation at high speeds.
– Applications: Production lines, conveyors, industrial robots.

View product details: KTR Rotex Standard Coupling

3. Genuine Roflex KTR shaft coupling:

Roflex KTR coupling is popular due to its reasonable cost but still ensures effective vibration reduction and shaft misalignment compensation.
– Roflex-N shaft coupling is flexible torsionally, has a compact design.
– ATEX standard coupling is applied in explosive environments
– Two-part shaft coupling to transmit torsional vibration reduction force.
– Corrosion protection according to requirements
– Torque: 65Nm 5000Nm
– Rotation speed: 3000 rpm to 8500 rpm
– Roflex coupling products can completely replace N-Eupex couplings

Advantages:
– Quick installation.
– Stable operation.
– Easy to replace components.
– Applications: Compressors, mixers, conveyor systems.

See product details: KTR Roflex-SH Coupling

4. B-Flex Rathi Pin & Bush Coupling:

Designed with the goal of optimizing the transmission for heavy industrial machines, the B-Flex Rathi-Lovejoy coupling is the first choice for large factories.
– Operating capacity: 13614 kw/100rpm
– Maximum diameter: 600 mm
– The B-Flex RB coupling consists of a barrel-shaped elastic bushing with pins and nuts, two shafts with flanges made of cast iron.

Advantages:
– Transmits large torque.
– Limits impact and overload.
– High durability, good heat resistance.
– Applications: Metallurgy, cement, mining industry.

See more details of B-Flex Rathi product

5. T10 Taper Grid Coupling:

DHP-T10 Taper Grid Coupling uses steel spring mesh for transmission, helping to disperse impact force and protect equipment from mechanical shocks.
– The coupling is easy to disassemble
– Hole diameter: 410mm
– Max torque: 311,000 Nm
– Coupling works with large torque
– Flexible variable load
– Large shaft deflection of the coupling
– Spring mesh coupling has simpler installation and maintenance than other types.

Advantages:
– Superior shock absorption.
– Maintain stable speed and load.
– Suitable for large capacity equipment.
– Application: Crusher, rolling mill, high speed motor.

See more details of DHP-T10 Taper Grid Coupling

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With more than 15 years of experience, Dai Hong Phat Shaft Coupling is proud to be a trusted partner of hundreds of domestic and foreign enterprises.
Let us accompany your sustainable development!

DAI HONG PHAT TECHNICAL PRODUCTION TRADING SERVICES CO., LTD
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