KHB Series High-Temperature Stepper Motors | Applications in the Automotive Testing Industry

●Safe brake
●Encoder feedback
●Integrated stepper drives

①Product series

KHB series stepper motors

②Flange size

28/42/57/86mm

③Motor length

51/60/76/84/118

④Output shaft

D = single shaft
SZ=double shaft

⑤*Brake

Blank= without brake
B= with brake

⑥*Feedback devices

Blank = without feedback
R = with resolver feedback

⑦Special Design Identification Code

XXXXX: Special Design Identification Code

*It is not possible to install both brake and position feedback devices on one single motor.
*Kingsni can provide signal converter to convert resolver signals to RS48s output or A/B incremental pulse output.

Modern automotive manufacturing and testing processes are rigorous. Workstations such as vehicle environmental chambers, engine bay simulations, and chassis durability testing are subjected to prolonged high-temperature conditions, with ambient temperatures frequently approaching +85°C. Compounded by complex disturbances such as vibration, oil contamination, and thermal-humidity cycling, standard stepper motors are highly susceptible to insulation aging, magnetic field decay, and positioning drift, rendering them incapable of meeting the automotive industry’s durability testing standards requiring millions of cycles. The KHB Series High-Temperature Stepper Motors were specifically developed for high-temperature automotive testing environments. Featuring reinforced high-temperature insulation and an industrial-grade vibration-resistant housing, they are ideal for automotive component fatigue testing and whole-vehicle environmental reliability testing. These high-temperature stepper motors have become an indispensable power unit for automotive testing equipment. These high-temperature stepper motors withstand a wide temperature range from -60°C to +85°C. With a focus on optimizing high-temperature demagnetization resistance, they can operate stably over the long term inside high-temperature, sealed test chambers. The motors utilize high-temperature-resistant enameled wire for the windings, eliminating the risk of high-temperature breakdown and short circuits, making them suitable for high-temperature simulation test stations around engines. High-temperature stepper motors are available in a full range of flange sizes—28, 42, 57, 60, and 86 mm—to accommodate the mounting dimensions of various testing fixtures.
This high-temperature stepper motor maintains a torque range of 0.1–7.5 Nm, covering light- and heavy-load testing requirements for automotive door handles, windows, accelerator pedals, and brake mechanisms. High-temperature stepper motors come standard with position feedback, transmitting real-time motion and travel data to ensure high-precision, traceable test data and meet the stringent testing standards of automotive manufacturers. High-temperature stepper motors can be equipped with an optional safety braking mechanism that rapidly locks the motor during impact tests or fatigue power-off conditions, mitigating the risk of collision damage to testing equipment. For custom automotive testing fixtures, high-temperature stepper motors support customized shafts to accommodate special mounting configurations such as eccentric shafts and extended shafts. In automotive interior high-temperature aging tests, these motors provide continuous reciprocating drive to the testing mechanism; in high-temperature simulation tests for powertrains, they maintain constant torque output without decay; and within whole-vehicle humidity-heat cycle chambers, they operate stably while resisting corrosion from humid heat.
High-temperature stepper motors eliminate the design flaws found in general-purpose motors and enhance industrial-grade vibration resistance, high-temperature tolerance, and resistance to humidity and heat, fully meeting the automotive testing industry’s requirements for high intensity, high frequency, and high precision. Without the need for additional cooling devices, these motors can operate continuously for extended periods in sealed high-temperature chambers, effectively reducing equipment modification costs. Overall, thanks to their outstanding advantages of stability, durability, adaptability, and data accuracy, high-temperature stepper motors are widely used in testing equipment for original equipment manufacturers (OEMs) and third-party testing institutions, providing a solid and reliable power solution for automotive component reliability testing and whole-vehicle environmental testing.