55mm Inner Height Series

Drag Chain for CNC 55mm Series – Enclosed Glass-Fiber Reinforced Nylon

Heavy-Duty Cable Protection for Demanding CNC Environments

Finding a reliable, high-capacity drag chain for cnc machinery operating under extreme conditions is vital for preventing unscheduled production downtime. The 55mm series fully enclosed cable carrier is purpose-built for heavy CNC machining centers, large-format laser tables, gantry milling machines, and automated heavy-duty workstations. Featuring a completely sealed, chip-proof outer structure, this enclosed cable track forms an impenetrable protective barrier that prevents hot metal swarf, abrasive grinding dust, and high-pressure coolant spray from reaching internal cables and fluid conduits.

With an internal height clearance of 55mm, this heavy-duty drag chain for cnc applications supports internal widths ranging from 75mm up to 250mm. It easily accommodates thick main motor power cables, high-flex feedback wiring, and heavy pneumatic or hydraulic hoses up to 45mm outer diameter, maintaining superior linear tracking and anti-sagging stability over extended travel distances.

55mm Enclosed Series Size Chart & Specifications

Explore our standard 55mm series enclosed models below. All versions incorporate quick-release snap-open lids along the outer radius for rapid cable harnessing and inspection. Custom widths and specialized bending radii are available upon request:

Item No	Internal Dimensions (H x W) mm	External Dimensions (H x W) mm	Bending Radius (R) mm	Pitch mm	Chain Links per Meter pcs	Opening Principle	Max Cable Diameter mm
YDLRE5550	55X50	75X80	R100 R125 R150 R200 R250 R300	80.5	13	enclosed cover type	50
YDLRE5560	55X60	75X90
YDLRE5575	55X75	75X105
YDLRE5590	55X90	75X120
YDLRE55100	55X100	75X130
YDLRE55125	55X125	75X155
YDLRE55150	55X150	75X180
YDLRE55175	55X175	75X205
YDLRE55200	55X200	75X230

Note: Popular bending radius choices for the 55mm series include R150, R200, and R250. For inner widths exceeding 150mm, selecting R200 or R250 is highly recommended to guarantee smooth articulation and extend lid latch service life.

High-Performance Material: 30% Glass-Fiber PA66 Reinforced Nylon

The operational lifespan of a heavy-duty cable carrier system relies heavily on superior polymer engineering. Every link component in our 55mm enclosed drag chain for cnc machines is precision injection-molded from **PA66 nylon heavily reinforced with 30% glass fiber**. This advanced composite formula delivers significant performance advantages:

Complete Chip & Debris Defense: Tight-sealing snap covers form a continuous shield against flying hot metal chips, wood shavings, fine stone dust, and cutting fluid splashes.
High Tensile Strength & Anti-Sagging Stiffness: The 30% glass-fiber matrix substantially increases structural rigidity, preventing carrier deflection and "snaking" under heavy cable loads.
10 Million+ Flex Cycle Endurance: Engineered for high wear resistance and low joint friction, ensuring smooth performance exceeding 10 million fatigue cycles.
Wide Operating Thermal Range: Maintains high impact toughness and dimensional precision in operating temperatures from -40°C up to +130°C.
Excellent Chemical Immunity: Resists swelling, hardening, or cracking when exposed to synthetic coolants, gear lubricants, hydraulic fluids, and industrial degreasers.
Low Operating Noise: Rated **UL94 V-2** for flame retardancy, featuring natural sound damping that keeps running noise below **60dB**.

Enclosed Structural Benefits & Maintenance Ease

Engineered to optimize routine machine serviceability, the 55mm enclosed carrier design incorporates snap-open top lids along the outer radius:

Fast & Direct Harness Installation: Maintenance technicians can easily pop open the top lids with a standard flathead screwdriver to lay pre-harnessed cables directly inside, bypassing tedious wire pulling.
Cable-Friendly Inner Contour: Injection-molded rounded inner radii minimize outer jacket friction, protecting sensitive encoder wires and hydraulic lines from premature wear.
Weight Reduction & Drive Efficiency: Weighs significantly less than traditional steel chains, minimizing motor inertia and supporting faster dynamic axis acceleration.

Target Applications & Heavy Machinery

This heavy-duty 55mm enclosed drag chain for cnc systems is engineered for rugged machinery operating in harsh, debris-heavy environments, such as:

Heavy CNC Machining Centers & Lathes: Protects large spindle motor cables and feedback wiring from hot steel and aluminum swarf.
Large Woodworking CNC Routers: Prevents fine sawdust and wood chips from clogging link articulation joints.
Industrial Laser, Plasma & Waterjet Cutters: Shields fiber cables and gas lines against high-temperature cutting sparks and slag.
Stone & Marble CNC Machines: Blocks abrasive stone slurry, grit, and water jets from invading the internal cable cavity.

Open Bridge Type Alternative

If your machinery operates in clean, debris-free environments where maximum thermal dissipation and full cable visibility are preferred, consider our open-style version:

Explore Open Bridge Type Option: 55mm Series Bridge Type Drag Chain for CNC

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