KHB Series Low-Temperature Stepper Motors | Applications in the Radar Industry

●Safe brake
●Encoder feedback
●Integrated stepper drives

Military and civilian radar equipment is often deployed in complex environments such as high-altitude plateaus, polar regions, high altitudes, and remote wilderness areas. Extreme cold in winter, large diurnal temperature fluctuations, and outdoor frost and ice formation are common operating conditions. Low-temperature environments can easily cause lubricants in standard motors to solidify, motor housings to become brittle, and rotation to seize up, directly affecting the scanning accuracy and tracking stability of radar antennas. The KHB Series Low-Temperature Stepper Motors are designed for outdoor detection radars, vehicle-mounted reconnaissance radars, and meteorological monitoring radars. They feature enhanced cold-weather resistance and vibration tolerance, making them suitable for extreme outdoor climates. These low-temperature stepper motors serve as the core power components for radar servo drive mechanisms. Capable of withstanding temperatures as low as -60°C, they utilize specialized freeze-resistant lubricants to prevent motor seizure caused by grease solidification. The housing of the low-temperature stepper motor is made of a low-temperature-resistant alloy that does not suffer from brittle cracking at low temperatures, making it suitable for long-term outdoor deployment.
The low-temperature stepper motor withstands temperatures up to +85°C, enabling it to operate in summer environments with intense sunlight and high surface temperatures, ensuring uninterrupted, all-weather operation throughout the year. The low-temperature stepper motor features full-size flanges ranging from 28 to 86 mm, compatible with various mounting bases for both small handheld radars and large vehicle-mounted turret radars. The low-temperature stepper motor maintains a holding torque of 0.1–7.5 Nm, supporting smooth low-speed rotation, precise positioning, and fine-tuning of the radar antenna. Equipped with a position feedback system, it transmits real-time antenna azimuth data to ensure accurate detection and positioning. An optional safety braking system is available to lock the antenna in place during high winds or on rough terrain, preventing equipment sway and misalignment. To accommodate the unique mechanical transmission structures of radar systems, these low-temperature stepper motors support custom shaft designs to integrate with special configurations such as reduction gears and universal joints. At polar meteorological radar stations, these motors withstand extreme cold to maintain continuous scanning; in vehicle-mounted mobile radars, they resist vibration and dust; and in high-altitude surveillance equipment, they operate reliably in harsh environments characterized by low pressure and low temperatures.
Low-temperature stepper motors depart from the standard configurations of commercial motors, utilizing military-grade cold-resistant components that are shock-resistant, age-resistant, and capable of withstanding extreme temperature fluctuations, thereby meeting the radar industry’s stringent outdoor deployment standards. Requiring minimal maintenance, these motors reduce the operational complexity and labor costs associated with remote radar sites. Thanks to their exceptional low-temperature stability and environmental resilience, they provide reliable, precise, and safe power support for meteorological detection, security surveillance, and field monitoring radar equipment.