7x7mm Small Drag Chain - One-Piece Bridge Type PA66 Mini Cable Carrier

This 7x7mm small drag chain features a compact 7x7mm inner size and 10x12mm outer dimensions, offering superior wire guidance for light-duty automation. Engineered with an R18 bending radius, this micro cable carrier prevents cable fatigue and ensures smooth, whisper-quiet travel in tight enclosure profiles. The one-piece bridge construction delivers robust continuous protection across a 17mm link pitch (59 links per meter, excluding end brackets).

Technical Specifications

Key Features & Performance Benefits

• Ultra-Compact Design for Limited Spaces: With a cross-section profile of just 10x12mm, this micro drag chain easily integrates into tight machinery frames where traditional cable carriers cannot fit.
• Whisper-Quiet Reciprocating Motion: Small 17mm link pitch minimizes impact noise during high-speed movement, ideal for office automation and desktop medical devices.
• Tough One-Piece Bridge Construction: Integrated crossbars maximize structural integrity, preventing side twisting and misalignment during long stroke cycles.
• Low Moving Mass & Wear Resistance: Lightweight PA66 composition reduces dynamic load on driving stepper motors, extending equipment service life.

Precision Injection Molding & Manufacturing Strength

Each 7x7mm small drag chain link is molded using advanced high-precision injection machinery. Our standardized factory production line guarantees strict dimensional tolerances, ensuring that every batch of micro cable carriers delivers consistent pitch alignment and stable snap-joint performance.

High-Grade PA66 Raw Material Advantage

Manufactured exclusively from 100% virgin PA66 reinforced polyamide granules, our small drag chain series demonstrates exceptional oil resistance, thermal tolerance (-40°C to +125°C), and high tensile strength. Unlike recycled plastic alternatives, pure PA66 material prevents joint cracking under continuous reciprocating friction, guaranteeing millions of flex cycles without mechanical failure.

Component Quality & Precise Link Assembly

The integrated one-piece bridge structure reduces overall moving mass while maintaining high torsional rigidity. Each molded link and matching mounting bracket undergo strict quality inspection, enabling smooth snap-fit assembly and smooth articulation across light-duty 3D printer and CNC equipment.

Versatile Applications for Light Automation

Due to its miniature size and smooth guidance performance, the YDLS77 7x7mm small drag chain is widely utilized across small-scale precise machinery, including:

• Desktop 3D Printers & Laser Engravers: Manages toolhead wiring and sensor cables with zero sagging or mechanical backlash.
• Automated Laboratory Analyzers: Protects delicate fluidic tubes and electrical wiring in compact medical testing equipment.
• Micro CNC Routers & Pick-and-Place Machines: Guides lightweight motor leads along X/Y axes effortlessly.
• Semiconductor Handling Systems: Provides cleanroom-compatible wire management with low particle wear.

Selection Guide & Installation Advice

When routing cables through the YDLS77 non-openable 7x7mm carrier, ensure the combined outer diameter of your wire bundle does not exceed 5mm. We recommend leaving a 10% space clearance around wires to prevent thermal buildup and internal friction during rapid movement.

Need higher wire capacity or openable crossbars for quick cable insertion? Explore our full 10x20 drag chain series or contact our technical team for custom length configurations and end bracket options.

Frequently Asked Questions

Q: Can the length of the 7x7mm drag chain be adjusted?
A: Yes, each individual link snaps together securely. You can easily adjust the travel length by adding or removing links using a small flathead screwdriver.

Q: How do I feed cables into a non-openable (one-piece) drag chain?
A: Connectors should be uninstalled or attached after threading the raw wire bundle through the inner cavity. For pre-assembled cables with large heads, an openable carrier style is recommended.