M - Rugged Ratchet coupling
LEMO lightweight, compact, high vibration resistant (Mil STD 202 & 810F), IP68 screw locking connector
Main Features
- Harsh environments (IP68)
- Ratchet coupling, strong resistance to shocks and vibrations
- Stealth Anthracite coating
- Light & compact construction
- Robust Multi-Keying system with color coding
Reliable High quality and performance interconnect solutions
Modular and custom made complete solutions
Worldwide presence with local experts, stock management and cable assembly everywhere
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
Electrical configurations
- Insert configurations
- Large selection of insert configurations including high-density low voltage, high power, high-speed, coaxial and fibre optic contacts as well as hybrid solutions
- Screening
- 360° screening for full EMC shielding
M series catalog
Solutions Selection Guide
Product brief - High-speed data transfer
Product brief - M series High Power
Product brief - M series Multi coax solution
OPTIMA
Use the table to compare the 2 main series within the OPTIMA connector family and to identify the connector(s) best adapted to your specific requirements.
| Description | Description LEMO lightweight, compact, high vibration resistant (Mil STD 202 & 810F), IP68 screw locking connector | Description LEMO lightweight, compact, high vibration resistant (Mil STD 810F), IP67 Push-Pull connector |
| Locking | Locking Triple start, 3/4 turn rachet coupling | Locking Push-Pull |
| Size | Size 9 sizes from ø 11.1 to ø 34.0 mm (plugs) | Size 9 sizes from ø 8.5 to ø 36.1 mm (plugs) |
| Keying | Keying 6 keyway options | Keying 4 keyway options |
| Shell Types | Shell Types Over 40 shell styles | Shell Types Over 12 shell styles |
| Shell Material | Shell Material Aluminium or Brass | Shell Material Aluminium or Brass |
| Plating | Plating Antracite nickel or Chrome | Plating Antracite nickel or Chrome |
| Cable Diameter | Cable Diameter 2.2 to 34 mm • 4 backshell options available | Cable Diameter 2.2 to 34 mm • 1 backshell option |
| NB of contact | NB of contact 3 to 114 | NB of contact 3 to 66 |
| AWG | AWG LV 16 to 32 mm • Hpower 1 to 8 mm | AWG 18 to 32 mm |
| Contact types | Contact types Multipole • Coax • Fibre Optic • Fluidic Mixed • High power | Contact types Multipole • Fibre Optic |
| Contact Termination | Contact Termination Crimp / Print (PCB) | Contact Termination Crimp / Print (PCB) |
| Data Protocols | Data Protocols USB 2.0 / Eth Cat6 | Data Protocols - |
| Sealing level | Sealing level IP68 / hermetic sockets | Sealing level IP68 / hermetic sockets |
| Temperature range | Temperature range -55°C to 200°C | Temperature range -55°C to 200°C |
| Mating Cycles | Mating Cycles > 3000 | Mating Cycles 300 / 5000 acc. to sizes/material |
M - Rugged Ratchet coupling
In harsh environments connectors need to be reliable, strong and resistant to vibration. The 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 360° 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.
- Socket / Receptacle
- Free
- Nb of contacts
- 1
- Termination
- Crimp
- Wire Size/AWG
- 1 - 1
- Socket / Receptacle
- Free
- Nb of contacts
- 1
- Termination
- Crimp
- Wire Size/AWG
- 1 - 1
- Socket / Receptacle
- Free
- Nb of contacts
- 3
- Termination
- Crimp
- Wire Size/AWG
- 8 - 8
- Socket / Receptacle
- Free
- Nb of contacts
- 3
- Termination
- Crimp
- Wire Size/AWG
- 8 - 8
- Socket / Receptacle
- Free
- Nb of contacts
- 1
- Termination
- Crimp
- Wire Size/AWG
- 2 - 2
- Socket / Receptacle
- Fixed Panel Front Mounted
- Nb of contacts
- 1
- Termination
- Crimp
- Wire Size/AWG
- 2 - 2
- Socket / Receptacle
- Fixed Panel Front Mounted
- Nb of contacts
- 3
- Termination
- Crimp
- Wire Size/AWG
- 8 - 8
- Plug
- Straight
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Socket / Receptacle
- Free
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Socket / Receptacle
- Free
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Socket / Receptacle
- Fixed Panel Front Mounted
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Plug
- Straight
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Nb of contacts
- 114
- Termination
- Crimp
- Wire Size/AWG
- 26 - 22
- Jacket cable outside diameter [mm]
- 14.25 - 28.50 mm
- Socket / Receptacle
- Fixed Panel Rear Mounted
- Nb of contacts
- 19
- Termination
- PCB - Straight
- Jacket cable outside diameter [mm]
- 6.50 - 13.00 mm
- Socket / Receptacle
- Fixed Panel Rear Mounted
- Nb of contacts
- 7
- Termination
- PCB - Straight
- Jacket cable outside diameter [mm]
- 4.85 - 9.70 mm
News
LEMO in Swiss magazine BILAN
LEMO is given as an example in an article on French-speaking Swiss companies, in the backyard of the Formula 1 circuits, who are indispensable and make the race cars of Lewis Hamilton or Charles Leclerc ever more efficient. Without their products, there would be no F1.
Innovations galore in Connected 20
Discover the 20th edition of our magazine, dedicated to innovation and innovators, showcasing varied and exciting content, that you have come to expect.
Sustainable development propelled forward
Initiated by four enthusiasts, the Flying Labs network counts on local competencies to boost the use of drones in emerging countries. A couple of hundred projects later, the impact of this small ecosystem keeps growing.
Contact us
t 
t
Do you
have a
challenging
project?
No matter how harsh the environment may be, LEMO has a solution ready for you to implement today.
If not, we promise to relentlessly innovate and develop one for you.
Please take a moment to reach out and describe your project, technical specifications and deadlines. We are standing by and looking forward to hearing from you - and adding your business to our thousands of longstanding satisfied customers, partners and employees - very soon.