In modern compact automation and complex linear motion machinery, routing dynamic cables and hoses within tight volumetric constraints presents a major engineering challenge. Traditional single-radius drag chains only permit motion in a single direction, which severely restricts machine footprint optimization. A double bending radius cable carrier (also known as a bridge type dual-radius energy chain or S-bend drag chain) is specially engineered with dual opposing bending stops (R1 and R2 within a single chain strand). This mechanical innovation allows the chain to achieve bidirectional deflection, reverse bending angles, and fluid "S-curve" motion profiles, making it an essential cable guidance architecture for restricted-space automation cells and complex interlocking stroke paths.
By integrating customized mechanical limits along both the top and bottom articulation links, our bridge-type double-bending cable carriers deliver distinct spatial and performance benefits for demanding motion applications:
Designed to transition smoothly between forward and reverse bending angles without binding. This dual-direction curvature enables seamless operation in telescoping mechanisms, nested machine slides, and dual-axis stroke paths where cables must alternate direction within a shared travel envelope.
Featuring open crossbar frames on both sides, this bridge structure drastically reduces overall chain weight while promoting continuous airflow around heavy-duty hydraulic hoses, pneumatic tubing, and high-flex power cables to prevent thermal buildup.
Engineered from high-tensile, modified Polyamide (PA66) reinforced with glass fiber options, our double-bending radius drag chains are built to endure continuous high-speed cycling under demanding industrial conditions.
Examine the mechanical parameters below to select the optimal double bending radius cable carrier model for your machinery clearance and load requirements:
| Model | Inner Height (mm) | Outer Height (mm) | Pitch (mm) | Bending Radii (mm) | Optional Materials |
| YDLDW20 | 20 | 35 | 45.7 | R55 | PA66 |
| YDLDW25 | 25 | 40 | 45.7 | R55 | PA66 / Glass Fiber + PA66 |
| YDLDW30 | 30 | 45 | 45.7 | R55 | PA66 |
| YDLDW35 | 35 | 55 | 68.1 | R75 | PA66 / Glass Fiber + PA66 |
| YDLDW45 | 45 | 65 | 68.1 | R75 | |
| YDLDW55 | 55 | 75 | 80.5 | R100 | |
| YDLDW65 | 65 | 85 | 80.5 | R100 | |
| YDLDW80 | 80 | 106 | 100 | R150 |
Our bridge-type double-bending energy chains are ideal solutions for complex, space-critical machinery across global manufacturing industries: