GLN-M40-40×44 Bellows Couplings

GLN-M40-40×44 Bellows Couplings

Disc Couplings

Primary Applications
It is widely used in applications requiring high reliability, high rotational speeds, and precision transmission, particularly suitable for:

High-Speed, High-Power Power Transmission:

Turbomachinery: Connecting steam turbines, gas turbines, steam turbines with generators, compressors, and pumps.

High-speed pumps and compressors: Connecting motors to high-speed equipment in petrochemical and process industries.

Marine propulsion systems: Linking engines to propeller shafts.

Applications requiring high precision and misalignment compensation:

Precision machine tools and spindles: Spindle drives for CNC machine tools and machining centers.

Testing equipment: Such as high-speed test benches and wind tunnel drives.

Flywheel energy storage systems.

Harsh operating conditions or space-constrained applications:

Suitable for high-temperature or chemically corrosive environments due to lubrication-free, wear-free operation.

Compact design ideal for equipment with limited axial installation space.

Critical, maintenance-free continuous processes:

Continuous production lines in power plants, refineries, and chemical plants, leveraging their maintenance-free, long-life characteristics.

Core Product Features

Bellows couplings are widely adopted due to the following outstanding characteristics:

Exceptional Misalignment Compensation:

Angular Misalignment: Compensates for angular misalignment between two shafts.
Radial Misalignment: Compensates for parallel displacement between two shafts.
Axial Misalignment: Allows shafts to freely expand/contract within a specified range (e.g., thermal expansion) while withstanding axial thrust.

Combined Misalignment: Simultaneously compensates for any combination of the above misalignments.

Zero Backlash & High Rigidity:

The metal diaphragm assembly operates with zero backlash during transmission, ensuring precise torque transfer and synchronization. Ideal for applications demanding high dynamic response and positioning accuracy.

High torsional stiffness ensures excellent motion accuracy.

Maintenance-Free, Long Service Life:

All components are metal, requiring no lubrication and containing no wear parts (e.g., gears, rubber components).

Service life depends on diaphragm fatigue endurance. Under proper alignment and loading, it achieves extremely long life with virtually zero maintenance.

High Speed and High Torque Capacity:

Manufactured from high-strength alloy steel with high dynamic balancing precision, suitable for extremely high speeds (up to tens of thousands of RPM).

Can be designed to transmit extremely high torque by increasing the number of diaphragm layers or diameter.

Excellent Balance and Low Inertia:

Symmetrical structure facilitates single- or double-sided dynamic balancing, significantly reducing vibration and additional loads at high speeds.

Relatively lightweight with low rotational inertia, minimizing impact on system startup, shutdown, and acceleration.

Electrical Insulation and Electrolytic Corrosion Protection:

The diaphragm assembly inherently blocks shaft electrical pathways, preventing current flow through bearings. This safeguards against electrolytic corrosion damage, protecting both the motor and equipment bearings.

Simple Installation:

Typically connected to the shaft via single keyway, spline, tapered sleeve, or interference fit. Installation and removal are relatively straightforward.