PUR Flexible Spring Cable, Color : Black, Green, Red, Yellow

A Sprial/Spring Cable is not a standard cable with a special jacket, but rather a standard cable that has undergone a post-forming process to impart its characteristic helical shape. This process involves heating the cable and winding it around a mandrel, then heat-setting the shape. This creates a product with unique mechanical properties tailored for dynamic applications.

1. （Core Design Principle & Manufacturing）

The cable's functionality stems from its pre-set mechanical memory.

• Manufacturing Process: A completed flexible cable is wound under tension and heat around a cylindrical mandrel. The heat relaxes the polymer chains in the insulation and jacket materials. When cooled in this coiled state, the shape is "set" into the cable, giving it a natural tendency to return to this compact form.

• Extension/Compression Cycle: When stretched, the coils open up. The internal conductors and insulation are specifically chosen for their ability to withstand this continuous bending and unbending without failure. When tension is released, the cable's mechanical memory causes it to retract to its original coiled length.

2. （Key Performance Characteristics）

• Extension Ratio: This is a critical specification, typically ranging from 1:2 to 1:4 (e.g., a 1-meter coiled cable can extend to 3 or 4 meters). The ratio depends on the initial coil diameter and the cable's construction.

• Cycle Life: Rated for a high number of extension/retraction cycles (often in the hundreds of thousands or millions), similar to a torsion cable.

• Controlled Movement: The cable naturally retracts away from machinery and hangs neatly, preventing snagging, dragging, and damage.

• Constant Force: It provides a consistent, gentle retraction force without the need for an external retraction mechanism.

3. （Common Types）

• Power Spring Cables: For supplying power to moving devices (e.g., hand tools, pendants).

• Data/Control Spring Cables: For transmitting signals and data (e.g., for sensors, USB connections). Often include shielding.

• Air/Liquid Hose Spring Assemblies: The same principle applied to pneumatic or hydraulic hoses.

• Hybrid Spring Cables: Combine power, control, and sometimes data/air in one spiral assembly.

4. （Applications）

• Hand-held Equipment: Electric tools, test equipment, communication headsets.

• Control Pendants: For cranes, machinery, and industrial robots.

• Automated Machinery: For sensors, actuators, and moving parts with limited travel.

• Charging Cables: For retractable charging stations.

• Medical Equipment: For probes, lights, and devices requiring neat cable management.