CMJ Test Systems

CMJ Test Systems is a French maker of test equipment for the aerospace industry. It builds hydraulic, pneumatic and mechanical test benches at its base in Gimont, France.

The company serves civil, military and business jet aviation. It supplies turnkey test solutions built around each customer's needs. Its markets include aerospace manufacturers, airlines and maintenance, repair and overhaul companies. They use the equipment in research and development test rigs, production acceptance test stands and component overhaul test stands. The company says its portfolio is larger than what it shows online.

In hydraulics, the company works with liquids such as kerosene, oil, Skydrol, water and hydrogen. Its solutions cover pressure testing from 0 to 5,000 bar, flow from 0 to 25,000 litres per hour and temperatures from minus 260 to plus 250 degrees Celsius. Working in ATEX environments in line with labour and safety rules is part of its daily job.

In pneumatics, it builds solutions for air, nitrogen, hydrogen and many other gases. Its team runs leak, cycling and burst tests. In mechanical testing, it deals with static and dynamic resistance, interfacing systems, damage and fatigue. It also designs and makes extra tooling so that customers can test their components easily.

The company also offers automation for test stands. It works on platforms and displays from National Instruments (LabVIEW), Siemens (S7, TIA and PCS7), Schneider (PL7, Unity Pro and SoMachine), GE Fanuc and Omron. It can build a fully custom product from scratch, work through the customer's own platform, or co-develop the automation with the customer's preferred subcontractor.

CMJ Test Systems focuses on safety, ergonomics, maintainability and performance. It supports each test bench from the early stages of development through to implementation, acceptance and the rest of its life. Maintenance contracts cover machine monitoring, preventive maintenance, phone assistance and fast corrective visits. The team can also supply and replace spare parts, calibrate sensors and answer questions about using a test bench or production machine.

Five co-founders with complementary aerospace backgrounds started the company after a long study of aerospace test equipment and market trends.

Services

• Hydraulic test benches
• Pneumatic test benches
• Mechanical test benches
• Test stand automation
• Test tooling design
• Maintenance contracts
• Spare parts supply
• Sensor calibration
• Technical support