TLG75 Series Fully Enclosed Steel Drag Chain (Outer Height 50mm)

The TLG75 series steel drag chain is an industrial-grade, fully enclosed cable conduit custom-engineered for heavy machinery, automated gantry systems, and metal-cutting CNC equipment. Constructed with rigid steel side links and interlocking aluminum alloy cover plates, the TLG75 features a standardized outer height of 50mm (H), a usable inner height of 30mm (h), and a fixed pitch of 75mm. This heavy-duty model forms a continuous, impenetrable protective barrier against red-hot metal swarf, high-velocity grinding dust, cutting fluid sprays, and direct thermal radiation.

Unlike lightweight nylon carriers, the TLG75 utilizes high-tensile steel plates coupled with reinforced joint pins, delivering exceptional self-supporting stroke lengths and high torsional rigidity under heavy dynamic push/pull loads. Because every industrial cable bundle requires tailored spatial distribution, we manufacture the TLG75 series to exact millimeter specifications. While structural height parameters remain standardized to preserve link geometry, internal widths (Bi) and bending radii (R) are built to order to accommodate your exact machinery footprint.

TLG75 Engineering Specifications & Structural Parameters

Review the mechanical dimensions, material options, and internal configuration options for the TLG75 model series:

Step-by-Step Selection Guide for TLG75 Drag Chains

To ensure smooth kinetic performance and avoid premature cable abrasion, follow these four mechanical calculation steps when configuring your TLG75 assembly:

1. Verify Cable Diameter Limits: Confirm that the thickest power cable, hydraulic line, or pneumatic hose has an outer diameter of 26mm or less. This maintains a vital 10% vertical clearance inside the 30mm inner height, allowing cables to move freely along the neutral axis during articulation.
2. Calculate Custom Inner Width (Bi): Sum the individual outer diameters of all enclosed lines. Add a minimum 10% safety margin plus 2–3mm spacing for each vertical divider or separator. Select or request the matching custom inner width between 40mm and 600mm.
3. Determine Proper Bending Radius (R): Match the chain bending radius (R100–R300) to the largest cable supplier’s specified dynamic bend radius limit. Selecting a radius that is too small leads to inner copper core stress and premature outer sheath fatigue.
4. Compute Total Chain Length (L): Calculate total chain length using the formula: L = (S / 2) + (π × R) + (2 × Pitch), where S represents total travel stroke. Contact our engineering desk to verify maximum unsupported span limits for long-travel strokes.