Differences Between TRVV and RVV Cables

Among the stepper motor cables we offer, the following two types are frequently seen. This article explains the differences between them.

The "T" in the name stands for "Towing Chain" (or drag chain). A towing chain is a plastic chain that protects cables and moves back and forth repeatedly with the machine.
Purpose: Designed specifically for applications requiring continuous or repeated bending. Examples include robotic arms in factories, cutting heads of CNC machines, and automated transport vehicles—places where cables must bend tens of thousands of times per day.
Copper Conductors: Uses extremely fine, tightly stranded copper wires that resemble small springs, making them highly resistant to breakage during repeated flexing.
Outer Sheath: Made of tougher, more flexible plastic that is abrasion-resistant and oil-resistant to prevent damage inside the towing chain.
Goal: Its primary goal is longevity, ensuring stable performance over millions of cycles even in high-speed motion applications.

The name lacks the "T": It is a standard flexible sheathed cable.
Purpose: Mainly used in stationary installations or applications with minimal movement. Examples include power cords for household appliances, fixed surveillance cameras on walls, intercom wiring in buildings, and internal wiring in stationary equipment.
Copper Conductors: Uses multi-strand copper wires twisted together, providing sufficient flexibility for easy installation.
Outer Sheath: Made of ordinary flexible plastic (PVC), primarily for insulation and basic protection.
Goal: Its goal is to ensure reliable operation in static conditions. It is not suitable for repeated bending or dynamic applications.

Updated on: 30/01/2026

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