KH Series High-Temperature Stepper Motors | Used in Dashboard Button Life Testing

● Encoder feedback
● Integrated stepper drives
● Rear shaft 

Dashboard button life testing is typically conducted in high-temperature environments (up to +100°C) to simulate the long-term reliability of vehicle components under conditions such as summer sun exposure or radiant heat from the engine compartment. In this scenario, high-temperature stepper motors are responsible for driving the repeated pressing of buttons, and their heat resistance directly determines the validity of the test. The KH Series high-temperature stepper motors are specifically designed for continuous operation at +100°C. They incorporate high-temperature-resistant magnets, an H-class insulation system, and Teflon lead wires, preventing the magnetic field decay or insulation breakdown that occurs in standard motors under high-temperature conditions. In dashboard button testing, high-temperature stepper motors are typically mounted on multi-axis test modules with 42mm or 57mm flange sizes, converting rotational motion into linear pressing force via custom output shafts (such as camshafts or lead screw ends). Holding torques ranging from 1.5 Nm to 12 Nm are available, enabling the high-temperature stepper motor to accommodate varying actuation force requirements, from light-touch membrane switches to hard mechanical buttons. To accurately record force decay over the switch’s lifespan, the high-temperature stepper motor can be equipped with position feedback to monitor switch travel and rebound position in real time. A safety brake option maintains the output shaft position during unexpected power outages, preventing damage to the instrument panel. Designed for prolonged operation at +100°C, the high-temperature stepper motor utilizes low-loss silicon steel laminations and an optimized heat dissipation structure to ensure controllable surface temperatures. The integrated driver option allows the drive circuitry to be mounted directly on the motor’s rear, enabling communication with the host computer via RS485 or CAN bus, which significantly reduces the number of wiring harnesses required within the high-temperature chamber. Notably, the high-temperature stepper motor’s shaft is made of high-temperature alloy steel and is paired with specially formulated high-temperature bearing grease, ensuring 8,000 hours of operation at 100°C without seizing. In dashboard button testing, high-temperature stepper motors must simulate varying press speeds and hold times; their microstep drive capability enables displacement resolution at the 0.01mm level. By coordinating multiple high-temperature stepper motors, tests can simultaneously cover steering wheel buttons, center console buttons, and air conditioning panel buttons. The KH series high-temperature stepper motors also offer 86mm and 110mm large-flange versions for high-torque multi-button linkage testing. Every cycle of high-temperature aging testing relies on the precise, repeatable positioning provided by high-temperature stepper motors. It has been proven that button testing systems equipped with high-temperature stepper motors can reduce human testing errors to less than 1%. Choosing the KH series of high-temperature stepper motors ensures the most reliable thermal environment drive support for dashboard durability certification.