FQ Series Waterproof Circular Connectors for Agricultural Machinery

LD28/SP28 Square Flange Connector Dimensions and Materials

FQ Series Waterproof Circular Connectors – Reliable Industrial Connectivity

The FQ series waterproof circular connectors provide IP67-rated performance for industrial automation, heavy machinery, outdoor sensors, robotics, and electrical equipment operating in harsh environments. These connectors use a bayonet quick-connect system and high-strength materials to withstand dust, moisture, vibration, and frequent mating cycles.

Available Configurations and Shell Sizes

The FQ series covers a range of shell sizes and pin configurations to match different wiring and signal requirements:

• FQ14-2TK – 2-pin straight spring female plug (compact size).
• FQ18-4ZJ – 4-pin square flange male receptacle for panel mounting.
• FQ24-19TK – 19-pin high-density circular plug for multi-signal applications.
• FQ30-14ZJ – 14-pin heavy duty circular connector with robust bayonet locking.

Models and pin counts vary by shell size and wiring requirements. Confirm the exact configuration needed for your application before ordering.

Key Features and Benefits

• IP67 Waterproof Protection: Fully sealed against dust and water immersion up to 1 m.
• Bayonet Quick-Connect Design: Fast, secure mating that reduces installation time.
• Wide Contact Range: Multiple configurations from 2 up to 55 contacts across FQ14, FQ18, FQ24, and FQ30 shell sizes.
• High Reliability: Gold-plated contacts ensure low resistance, strong vibration resistance, and long life (500+ cycles).
• Versatile Applications: Suitable for industrial automation systems, heavy machinery, outdoor sensors, robotics, and electrical equipment requiring robust connectivity.

Selecting the Right FQ Connector

When choosing an FQ series connector, consider the following decision points:

• Pin count and contact density: Match the number of cores to your signal or power requirements. Compact 2-pin options suit basic signal lines, while 19-pin or 14-pin versions handle complex multi-signal systems.
• Mounting style: Choose between straight plug, square flange receptacle, or panel-mount configurations based on your enclosure and cable routing.
• Environmental exposure: Verify that IP67 protection meets your immersion and dust-exposure conditions. Confirm whether the connector remains sealed while unmated.
• Mating cycles: The 500+ cycle rating supports frequent plugging, but confirm expected duty cycles for your specific installation.

Application Boundaries

The FQ series is well suited for industrial automation, agricultural machinery, outdoor equipment, and robotics where dust and moisture resistance are required. However, these connectors are not designed for underwater permanent submersion beyond the IP67 rating, nor for applications requiring continuous operation at temperatures outside the verified specification range. For higher pin density or different environmental ratings, review other connector series in the catalog.

Inquiry Checklist

To receive an accurate quotation and configuration recommendation, please provide the following information:

• Required pin count and contact arrangement
• Plug or receptacle, male or female, straight or flange mounting
• Cable outer diameter and conductor size
• Operating voltage and current
• Environmental conditions (temperature, moisture, vibration)
• Expected mating frequency and service life

For related heavy-duty options, see the 12G Series Circular Connectors or review the LD28/SP28 Square Flange Connector Dimensions and Materials for alternative mounting configurations.