Mini Air Coupling to Tube 4mm ID × 6mm OD | Anti-Kink Spring Pneumatic Fitting

Engineering Overview

Where standard couplings leave tubing vulnerable to sharp-angle bending and collapse, this fitting incorporates a close-wound spring coil that distributes bend stress evenly along the tube wall. The result is a maintained bore diameter, consistent airflow, and a connection that holds its integrity under repeated flexing — essential in robotic lines, jig assemblies, and hand-tool drops where tubing is constantly repositioned.

Key Features

• Integrated Anti-Kink Spring — Close-wound coil prevents tube collapse at the coupling entry, maintaining full bore airflow under tight routing angles
• Push-Fit Connection — Tool-free tube insertion and positive retention; single-action release collar for fast disconnection without line depressurisation
• Mini Series Profile — Compact body dimensions suit confined panel spaces, manifold blocks, and lightweight pneumatic assemblies
• Broad Tube Compatibility — Accepts standard 4mm ID × 6mm OD polyurethane (PU), nylon (PA), and semi-rigid PTFE tubing
• Precision-Machined Body — Manufactured to close tolerances for consistent sealing performance and long service life
• Vibration Resistant — Positive-lock collet design resists pull-out under dynamic load and vibration typical of pneumatic tooling

Technical Specification

Compatibility Note: Verify tube outer diameter (6mm OD) and inner diameter (4mm ID) before ordering. This fitting is designed for the Mini Series coupling range. For larger bore requirements, see our standard and maxi coupling ranges. If in doubt, contact our technical team with your tube specification and working pressure.