Serpentine Spring Coupling

A Serpentine Spring Coupling(Snake Spring Coupling) is an advanced, metal flexible coupling that connects two shafts, transmitting torque using snake-shaped springs embedded in grooved half-couplings, offering superior vibration damping, shock absorption, and compensation for shaft misalignment (axial, radial, angular) while allowing easy maintenance, making it ideal for heavy-duty machinery like crushers and pumps. 

Key Components

Half Couplings: Two grooved metal pieces that grip the shafts.

Serpentine Springs: Specially shaped, high-strength steel springs (like a wave or snake) placed in the grooves.

Half Housings & Seals: Cover and protect the springs, often with lubrication. 

How it Works

Torque Transmission: Power moves from the driving shaft to its half-coupling, then through the snake springs to the other half-coupling and the driven shaft.

Vibration & Shock Absorption: The unique elastic deformation of the serpentine springs absorbs energy from shocks and vibrations, preventing them from reaching connected equipment.

Misalignment Compensation: The springs' flexibility allows them to handle axial (end-to-end), radial (side-to-side), and angular (angled) shaft misalignments without losing efficiency. 

Advantages

Excellent Dampening: Significantly reduces resonance and vibration.

High Load Capacity: Can handle short-term overloads (2-3x rated torque).

Easy Maintenance: Simple structure allows for quick assembly/disassembly, even without moving the connected machines.

Versatile: Suitable for high-speed, high-torque, and reversing Applications.

Durable: Longer life than non-metallic couplings. 

Typical Applications

Crushers, ball mills, and mining equipment.

Steel rolling mills, cranes, and elevators.

Pumps, compressors, and agitators in petrochemicals.

Machine tools and fans in general machinery.