4mm x 2.5mm Pneumatic Air Compressor Tube

4mm x 2.5mm Pneumatic Air Compressor Tube provides a compact, flexible, and reliable solution for transmitting compressed air in miniature and low-flow automation systems. Featuring a 4mm outer diameter (OD) and a 2.5mm inner diameter (ID), this tubing is perfectly sized for use with small push-to-connect fittings, solenoid valves, and pneumatic cylinders commonly found in desktop CNC machines, 3D printers, and complex robotic assemblies. Constructed typically from durable Polyurethane (PU) or Nylon, this tube handles consistent working pressure while maintaining excellent kink resistance and a tight bending radius, ensuring you can route air lines neatly through confined spaces. Rely on this tubing for pneumatic connections that demand both precision and flexibility.

Key Features:

• Miniature Sizing: The small 4mm OD integrates perfectly into systems with limited space, such as compact actuators or detailed automation jigs.
• High Flexibility: Polyurethane (PU) construction offers superior elasticity and bending capability, allowing for easy installation and routing around sharp corners.
• Pressure Resilience: Maintains structural integrity across a wide range of common pneumatic working pressures.
• Abrasion and Kink Resistance: The tube material resists damage from external friction and retains its shape, preventing air flow restriction.
• Easy Integration: Works seamlessly with standard 4mm push-to-connect and quick-release couplers for rapid prototyping and assembly.

Technical Specifications:

• Operating Fluid: Compressed Air, Vacuum, or Inert Gas
• Maximum Working Pressure: Typically 0.8 MPa to 1.0 MPa (≈ 8 Bar to 10 Bar)
• Operating Temperature Range: ≈ -20°C to 60°C
• Material Type: Polyurethane (PU) or Nylon (PA)
• Safety Factor: Generally 3:1 or 4:1 against bursting pressure

Mechanical Specifications:

• Surface Finish: Smooth for minimal internal friction and superior flow characteristics.
• Bend Radius: Small, tight bending radius for use in dynamic or compact applications.
• Compatibility: Fully compatible with all 4mm OD quick-connect fittings and couplings.

Dimensions:

• Outer Diameter (OD): 4.0 mm
• Inner Diameter (ID): 2.5 mm
• Wall Thickness: 0.75 mm
• Weight: ≈ 6 g/meter (PU material)

Pinout and Wiring:

• Note: This is a fluid-transmission component; it requires no electrical wiring or pin configuration.
• Function: Use the tube to channel pressurized air from the source (compressor/pump) to the destination (valve/cylinder/actuator).
• Installation: Ensure a straight, clean cut on the ends, then push the tubing firmly into the matching pneumatic fitting until seated.

Datasheet Reference:

• Download Pneumatic Tubing Specification Sheet

Commonly Used in:

• Hobby Robotics: Providing air for miniature grippers and custom pneumatic end-effectors.
• Small-Scale Manufacturing: Connecting micro-cylinders and pneumatic tooling on assembly lines.
• 3D Printer Systems: Supplying air to cooling nozzles or filament moisture purge systems.

Applications:

• Air Tool Hookups: Connecting low-flow, high-precision air tools to the main supply line.
• Pilot Lines: Running signal lines to control larger pneumatic valves or systems.
• Vacuum Systems: Used in small-scale vacuum pick-and-place applications due to its tight seal capability.

Equivalent Models:

• 6mm x 4mm Tubing: A larger standard size offering higher flow rates and typically higher maximum pressure.
• PTFE/Teflon Tubing: Offers superior chemical resistance and higher temperature tolerance, though less flexible than PU.
• PVC Tubing: A lower-cost, lower-pressure solution often used for simple fluid transfer.

Package Includes:

• 1 x 4mm x 2.5mm Pneumatic Air Compressor Tube