• DRHX-RS-485 & Analog control (1-8Nm)

    OJ-DRHX RS-485 & Analog control

    Flexible DRHX with sophisticated software

    The OJ-DRHX RS-485 & Analog control is equipped with both Modbus RTU, BACnet MS/TP and an 0-10V interface for controlling, making it the perfect choice for refurbishment and much more.

    View product

  • DRHX-Constan speed (1-8Nm)

    OJ-DRHX-Modbus control

    This is the basic variant in the DRHX family

    It still contains all the needed features and of course the new software rotor monitor/guard and silent motor operation

    View product

  • DRHX-Constan speed (1-8Nm)

    OJ-DRHX Constant speed

    Accurately controlled rotor speed

    The Constant speed variant is the new member of the DRHX family designed with simplicity in mind.

    View product

  • MRHX-3P01N, 1Nm


    Stepper motor for rotary heat exchangers

    Along with our OJ-DRHX controller, the OJ-MRHX stepper motor program perfectly meets the rotary heat exchanger demands. Being continuously run at low speeds, the MRHX stepper motor ensures a high starting torque and an even torque curve. Also, it has a smaller carbon footprint. Using a stepper motor both eliminates all risks of oil leakage and the use of worn-out components.

    View product

  • OJ-DRHX-Pctool

    Service and engineering PC tool

    Service and engineering PC tool for controlling, monitoring, setting up and configuring OJ DRHX products.

    View product