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LEMO’s M Series Ratchet Coupling Type Connectors

In harsh environments connectors need to be reliable, strong and resistant to vibration. The LEMO's M series, used in the aerospace, UAV, defence, and motorsport industries, uses a ratchet screw system for rapid and secure coupling. Lightweight and compact yet robust and oil/fuel resistant, the M series is available in a variety of sizes (including miniature), watertight and vacuum-tight models, threaded model compatible with standard MIL-DTL-38999L backshells. The keying system offers high contact density for secure signal transmission, and sensitive signals are protected by 360Degrees EMC shielding. A large selection of insert configurations including high-density low voltage, high power, high-speed, coaxial and fibre optic contacts and as well as hybrid solutions is available.
LEMO M Series Connectors

The M Series connector from LEMO features an innovative design tailored for motorsport applications and military systems. Constructed from high-strength aluminum, this connector stands out as one of the lightest and most compact in the LEMO product line. Its one-grip ratchet screw system allows for quick and secure coupling. The arctic grip ensures easy manipulation, even when wearing gloves or when the connector is in a hard-to-reach area. Regardless of the environment's severity, LEMO has a ready-to-implement solution for you today.

Form & Material

Environment
Broad metallic high quality circular connector range for rugged environments (IP68)
Latching system
Ratchet Coupling enabling easy fast easy yet secure and reliable frequent connect and disconnect, and with very strong resistance to shocks and vibrations
Keying system
Keying system allowing for a high contact density, with multiple key options and color coding to prevent mismating
Construction
Field proven solid, light & compact construction, oil and fuel resistant
Ergonomy
Ergonomic design with knurled or arctic grip patterns, scoop proof
Size and model
Various sizes and models including miniature, watertight and vaccumtight models, MIL-DTL-38999L backshell

LEMO® Connector Advanced Applications

Sleek and streamlined, LEMO push-pull connectors offer a modular design ideal for highly ruggedized applications. These connectors excel in environments requiring mission-critical connections under conditions of vibration, shock, and heat. Engineered for reliability, longevity, and aesthetic appeal, push-pull connectors are perfect for settings where these attributes are essential. LEMO's connectors are precisely designed to accommodate most types of electronic connections. Common applications for LEMO connectors include:

  • Medical - LEMO Connectors can be found in electrophysiology catheters, electrosurgical devices, heart pumps, robotic surgical devices, MRI machines, and more.
  • Defense - LEMO Connectors can be found in many defense and security industry products including command & control devices, communications, computers, land vehicles, airborne devices, and personal equipment.
  • Film Industry - LEMO Connectors have been used on many high-budget films and TV shows. They are regularly used for professional cameras and underwater equipment.
  • Motor Sports - LEMO Connectors are used consistently within Formula 1 race car instrumentation, mechanical equipment, and gear
  • Instrumentation - LEMO Connectors are used in a variety of demanding industries such as agriculture, construction, surveying, and machine control production. 

Features

  • Ratchet-coupling mechanism
  • Quick mating: 3/4 turn to seat
  • Compact design for space savings
  • Lightweight
  • Oil and fuel resistant
  • Scoop proof
  • High vibration and shock resistance
  • 360° screening for full EMC shielding
  • Sealed to IP68 when mated
  • Requires 2x the coupling force to unmate
  • Threaded for MIL-DTL-38999L backshell
  • Pin configuration from 2 to 114 contacts