Diaphragm Coupling for Sundyne P3000/P6000 High Speed Pumps, OEM Replacement

Structural Design:

Double-layer metal diaphragm assembly: The central metal elastic diaphragm serves as the core component, which compensates for radial, angular and axial misalignments between two shafts through elastic deformation, preventing shaft vibration and stress concentration.

High-strength bolts and hubs: Steel hubs with black oxide finish combined with locking bolts ensure reliable high-torque transmission and adapt to the high-speed operating conditions of high-speed pumps.

Taper-bore shaft hole: The inner bore at the top adopts a taper sleeve design, enabling keyless locking with the pump shaft/motor shaft, delivering high torque with precise alignment.

Core Advantages:

Lubrication-free and maintenance-free: The diaphragm coupling requires no lubrication, making it suitable for high-speed and clean operating conditions and avoiding contamination of the conveyed medium by lubricating oil.

High-speed adaptability: Specially designed for Sundyne high-speed pumps, it can withstand extremely high rotational speeds (typically up to 10,000+ RPM) with high dynamic balance accuracy.

Misalignment compensation capability: Effectively absorbs installation errors, thermal expansion and vibration, protecting the bearings of the motor and pump and extending equipment service life.

Application Scenarios: Sundyne high-speed pump units in petrochemical, natural gas, fine chemical and other industries. As the core transmission component connecting the motor and the pump, it directly affects the operational stability and service life of the pump set.