Product Description

Nylon Sleeve Gear Coupling
Curved-tooth Coupling / Coupling BoWex

Ubet Nylon Sleeve Couplings flexible shaft connections for a positive torque transmission and specifically suitable to compensate for axial,  radial and angular shaft misalignment.

Ubet Nylon Sleeve Couplings are compact and require no lubrication. They are adapted to many applications including vertical and blind installations. They operate over a wide range of temperature at speed up to 5,000 RPM. This type of coupling is widely used in application such as Motor,   Generator and Pump etc.


l  Nylon-steel combined,  maintenance free
l  Compensation for axial, radial and angular misalignment
l  Convenient axial plugging assembly
l  Without bolts, pins, flanges to affect balance or safety
l  No requirement of lubrication
l  Excellent electrical insulation
l  Can be vertically or horizontally assembled
l  Tolerance of finished bore in appliance with ISOH7

l  tem No. l  Item No. l  Finished bore range l  Outside Diameter l  Nominal Torque Nm
l  UTNL-14 l  UTNL-14-L l  6-14 l  40 l  10
l  UTNL-19 l  UTNL-19-L l  8-19 l  48 l  16
l  UTNL-24 l  UTNL-24-L l  10-24 l  52 l  20
l  UTNL-28 l  UTNL-28-L l  10-28 l  66 l  45
l  UTNL-32 l  UTNL-32-L l  12-32 l  76 l  60
l  UTNL-38 l  UTNL-38-L l  14-38 l  83 l  80
l  UTNL-42 l  UTNL-42-L l  20-42 l  95 l  100
l  UTNL-48 l  UTNL-48-L l  20-48 l  114 l  140
l  UTNL-55 l  UTNL-55-L l  25-55 l  132 l  240
l  UTNL-65 l  UTNL-65-L l  25-65 l  175 l  380

Ubet Machinery is also competetive on these power transmission components.

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flexible gear coupling

Common Industries and Use Cases for Flexible Gear Couplings

Flexible gear couplings find widespread applications across various industries due to their ability to transmit torque efficiently while accommodating misalignments and reducing vibrations. Some of the common industries and specific use cases include:

1. Power Generation:

Flexible gear couplings are extensively used in power generation plants, including thermal power plants, hydroelectric power plants, and wind farms. They connect turbines, generators, and other rotating equipment, allowing for smooth power transmission and accommodating misalignments caused by thermal expansion or settling.

2. Steel and Metal Processing:

In steel and metal processing industries, flexible gear couplings are employed in rolling mills, continuous casting machines, and other heavy machinery. They handle the high torque and misalignments that occur during metal forming processes, providing reliable power transmission and reducing downtime.

3. Petrochemical and Oil & Gas:

These industries often deal with harsh environments, high temperatures, and corrosive substances. Flexible gear couplings with appropriate materials and coatings are used in pumps, compressors, and other critical equipment to ensure efficient power transmission and reliability.

4. Mining:

Mining operations involve large machines and heavy loads, requiring couplings that can handle substantial torque and misalignment. Flexible gear couplings are used in conveyor systems, crushers, and other mining equipment to maintain smooth and efficient operation.

5. Marine and Shipbuilding:

In marine applications, flexible gear couplings are used to connect marine diesel engines to propeller shafts. They absorb vibrations and misalignments caused by the motion of the ship, ensuring reliable power transmission and reduced wear on the propulsion system.

6. Pulp and Paper:

In the pulp and paper industry, flexible gear couplings are utilized in various stages of the papermaking process, including pulp refiners, digesters, and winding machines. They provide precision torque transmission and minimize vibrations, contributing to the efficiency of the paper production process.

These are just a few examples, and flexible gear couplings can be found in many other industries, such as cement, chemical, food and beverage, and more. Their versatility and ability to handle challenging conditions make them a preferred choice in various power transmission applications across industries.

flexible gear coupling

Handling Torsional Stiffness and Dynamic Balancing in Flexible Gear Couplings

Flexible gear couplings are designed to effectively handle torsional stiffness and dynamic balancing in rotating machinery. Here’s how they achieve this:

  • Torsional Stiffness: Flexible gear couplings are engineered to provide a certain level of torsional stiffness while still allowing for some flexibility. This stiffness helps transmit torque efficiently from one shaft to another, ensuring minimal power loss. The flexibility of the coupling allows it to accommodate misalignments and shock loads, reducing the risk of damage to connected equipment.
  • Dynamic Balancing: Proper dynamic balancing is crucial in rotating machinery to prevent vibrations that could lead to premature wear and damage. Flexible gear couplings are designed to have symmetrical and evenly distributed masses. This helps minimize any dynamic imbalances that could occur during rotation, resulting in smoother and more stable operation.

The combination of torsional stiffness and dynamic balancing in flexible gear couplings makes them suitable for various industrial applications, providing reliable power transmission while dampening vibrations and accommodating misalignments. It ensures that the connected machinery operates efficiently and with reduced wear and tear, resulting in longer equipment lifespan and enhanced overall system performance.

flexible gear coupling

Accommodating Misalignment and Reducing Vibrations in Flexible Gear Couplings

Flexible gear couplings use an elastomeric flexible element, often made of high-quality rubber, to connect the two gear hubs. This design allows the coupling to accommodate misalignment between the connected shafts and reduce vibrations during operation.

1. Misalignment Accommodation: The flexible nature of the elastomeric element allows it to bend and flex as the shafts move out of alignment. Flexible gear couplings can accommodate three main types of misalignment:

  • Angular Misalignment: Occurs when the shafts are not parallel and are at an angle to each other.
  • Parallel Misalignment: Occurs when the shafts are not in a straight line but are parallel to each other.
  • Axial Misalignment: Occurs when the shafts are displaced along their axis.

The ability to handle these types of misalignment is crucial in various industrial applications where machinery may experience movement, thermal expansion, or other dynamic forces.

2. Vibration Reduction: The elastomeric material in the flexible gear coupling acts as a damping mechanism. It absorbs and dissipates vibrations and shocks generated during operation. This damping effect helps in reducing noise levels and protects the connected equipment from damage caused by excessive vibrations.

Overall, the combination of misalignment accommodation and vibration reduction in flexible gear couplings contributes to improved system reliability, reduced maintenance requirements, and extended machinery life.

China factory Nylon Steel Conbined Flexible Gear Coupling Interchange with Ktr Bowex Type  China factory Nylon Steel Conbined Flexible Gear Coupling Interchange with Ktr Bowex Type
editor by CX 2024-01-15