Single-disc membrane couplings and double-disc membrane couplings are two common types of membrane couplings that differ in structure and performance

Single-disc membrane coupling:

Structure: A single-disc membrane coupling consists of a single elastic membrane, typically a thin sheet, connecting two shafts.

Performance: Single-disc membrane couplings have smaller dimensions and lighter weight, suitable for low-torque transmission systems. They typically have higher flexibility and larger axial, angular, and radial offset compensation capability.

Advantages: Single-disc membrane couplings have a simple structure and lower cost, suitable for low-power transmission systems such as small machinery and instruments.

Double-disc membrane coupling:

Structure: A double-disc membrane coupling consists of two membranes forming a symmetrical structure, connecting two shafts.

Performance: Double-disc membrane couplings have higher rigidity and torque transmission capability compared to single-disc membrane couplings. Their performance in vibration reduction and shock absorption is relatively poorer but provides higher precision and rigidity.

Advantages: Double-disc membrane couplings are suitable for transmission systems that require higher torque transmission and precision, such as large machinery and industrial equipment.

A membrane coupling with an expansion sleeve, also known as a sleeve coupling, offers the following advantages:

The expansion sleeve increases the coupling's rigidity and torque transmission capability, making it suitable for higher torque transmission systems.

The expansion sleeve provides additional vibration and shock absorption capability, reducing vibration and noise during transmission.

The expansion sleeve offers a certain degree of axial and angular offset compensation, increasing system fault tolerance and reliability.

Couplings with an expansion sleeve generally exhibit better dynamic balance performance, reducing the transmission of vibration and axial forces.

In summary, a membrane coupling with an expansion sleeve is suitable for transmission systems that require higher torque transmission, precision, and vibration reduction capabilities.