TLG125 Heavy-Duty Enclosed Steel Drag Chain (Outer Height 100mm)

The TLG125 series steel drag chain is an extra-heavy-duty, fully enclosed dynamic cable tracking system built for high-payload industrial machinery, heavy steel rolling mills, large gantry CNC centers, and foundation drilling rigs. Standardized with a robust outer height of 100mm (H), an expanded inner height of 70mm (h), and a long 125mm pitch (P), the TLG125 is structurally engineered to manage thick power cables and high-pressure hydraulic hoses while sealing internal conduits against destructive metal slag, molten spatters, chemical coolants, and harsh impacts.

Featuring high-yield strength steel side links and interlocking heavy-gauge aluminum cover plates, the TLG125 provides exceptional resistance to lateral twisting over long unsupported travel distances. Recognizing that heavy machinery requires custom spatial layouts, we engineer every TLG125 unit to exact non-standard specifications. While structural heights (H100/h70) remain fixed for joint pin alignment, internal widths (Bi 70–450mm) and bend radii (R200–R600mm) are precision-fabricated to match your exact dynamic envelope.

TLG125 Engineering Specifications & Configurable Parameters

The table below details the standardized dimensions, material variations, and internal separation options for the TLG125 series:

How to Calculate & Specify Your Custom TLG125 Assembly

Because the TLG125 handles larger diameter lines and heavier dynamic loads, follow these four mechanical sizing steps during system selection:

1. Verify Maximum Cable/Hose Diameter: Ensure that the thickest hydraulic line or power cable outer diameter does not exceed 60mm. This reserves a essential 10% vertical safety margin inside the 70mm inner height, preventing internal binding during curvature.
2. Calculate Custom Internal Width (Bi): Sum the outer diameters of all parallel conduits, add a 10% clearance allowance, plus 3mm for every vertical steel divider. Select or request a custom width between 70mm and 450mm.
3. Match Bending Radius (R200 to R600): Select a bend radius that meets or exceeds the largest cable manufacturer's dynamic bending radius specification. For high-pressure hydraulic hoses, larger radii (R400–R600) are recommended to mitigate internal fluid pressure stress.
4. Determine Total Chain Length (L): Calculate total chain length using the standard formula: L = (Travel Stroke / 2) + (π × R) + (2 × 125mm Pitch). For extended travel lengths exceeding 6 meters, consult our team regarding guide channels and support rollers.