Inertia ratio: It is recommended that, in low-temperature environments, the load inertia to motor rotor inertia ratio be controlled within 5:1 (compared with around 10:1 under normal temperature conditions), because system stiffness may change at low temperatures, and an excessively high inertia ratio can easily cause oscillation.
Gain adjustment: Temperature variations can change the friction coefficient and stiffness of the mechanical transmission system. When selecting the motor and drive system, it should be confirmed whether the drive has automatic gain adjustment or temperature compensation functions, so that the response speed can be optimized across different temperature ranges.
For more information, please feel free to contact SENYD electrical engineers for selection support.
Conventional servo motors subjected to frequent thermal expansion and contraction may experience the following issues:
Magnet detachment risk: Low-quality adhesives may fail under repeated thermal shock. When selecting a motor, it should be confirmed that the magnets are fixed using high-temperature-resistant inorganic adhesives or mechanical retention (press-fit/clamping) processes.
Bearing damage: Differences in thermal expansion coefficients between the inner and outer bearing rings may lead to loss of preload or even seizure. Ceramic ball bearings or steel bearings with specially designed clearance grades should be used.
Insulation aging: The winding insulation layer may crack due to repeated expansion and contraction. It is necessary to ensure that the insulation class reaches H class (180°C) or higher and has passed thermal shock testing validation.
Therefore, extreme high and low temperature environments require dedicated high and low temperature servo motors to ensure stable operation without failures. SENYD high and low temperature servo motors are designed specifically for such extreme environments.
1.Fit tolerance: Considering thermal expansion, in high-temperature applications the fit tolerance between the shaft extension and the flange may need to be adjusted (e.g., from H7/g6 to a looser or tighter fit, depending on the specific temperature direction) to prevent seizure or slippage.
2.Alignment requirements: At low temperatures, couplings may become brittle. During installation, extremely high concentricity must be ensured to avoid additional stress that could lead to shaft breakage.
3.Preheating/pre-cooling: Before starting in extreme low-temperature conditions, it is recommended to run the motor at low speed and no-load for a period of time for “warm-up,” allowing the lubricant to distribute evenly.
If needed, you may contact SENYD engineers for remote commissioning or on-site technical support.
Cause: Uncompensated torque derating; insufficient encoder heat resistance; reduced cable insulation performance.
Countermeasure: Re-tune drive gain settings, check encoder temperature rating, and replace with high-temperature-resistant cables.
Cause: Thermal expansion of the lead screw or mechanical structure, rather than an issue with the motor itself.
Countermeasure: Add temperature compensation algorithms in the control system, or use a linear scale (grating ruler) for full closed-loop control.
If you encounter any of the above issues during the use of SENYD high and low temperature servo motors, you may contact our technical engineers at any time for troubleshooting and commissioning support.
SENYD high and low temperature servo motor / high-speed motor selection samples are designed to be simple and easy to use, allowing customers with industry experience to complete product matching and selection independently. In addition, we also have dedicated technical engineers to provide selection support based on specific operating conditions. The following information is required.
To obtain an accurate selection solution, please provide:
1.Temperature profile: minimum/maximum ambient temperature, duration, and temperature change rate.
2.Load characteristics: rotational inertia, maximum torque, rated speed, and acceleration/deceleration requirements.
3.Environmental medium: air, vacuum (pressure level in Pa), corrosive gases, and humidity conditions.
4.Installation method: horizontal/vertical installation, and cooling conditions (whether water cooling or air cooling is used).
5.Feedback requirements: resolution and communication protocol (BiSS-C, EnDat, Tamagawa, etc.).
High and low temperature servo motors are special-purpose motors designed for extreme temperature environments. Through core technologies such as low-temperature-resistant materials, specialized lubrication systems, and anti-condensation design, they solve common issues of conventional motors, including grease solidification, material embrittlement, and seal failure at low temperatures, as well as demagnetization and insulation aging at high temperatures.
SENYD high and low temperature motors are mainly used in the following applications:
Our products cover a standard temperature range of -40°C to +150°C and can be customized to extend to extreme ranges from -55°C to +200°C.
Compared with general-purpose servo motor brands, SENYD’s core advantage lies in its deep customization capability for special operating conditions:
1.Extreme environment adaptability: Our high and low temperature motors use low-temperature-resistant alloy steel, wide-temperature aerospace-grade lubricants, and special insulation treatments, enabling stable operation from -40°C to +80°C and even wider temperature ranges. Our high-speed motors are specially designed with optimized rotor dynamics and ultra-low vibration control, reaching speeds of up to 60,000 rpm.
2.Agile customization response: For non-standard installation requirements in industries such as automotive component testing and semiconductor equipment, our engineers can provide customized solutions within 2 working days. Delivery time is more than 50% shorter than imported brands, with on-site technical support ensuring reliable implementation.
3.Rich application validation: Whether it is high and low temperature servo motors used in automotive component testing and environmental test chambers, or high-speed motors applied in spin testing and axle testing scenarios, we have accumulated mature application experience, significantly reducing customers’ selection risks and commissioning cycles.
SENYD currently offers high and low temperature servo motors, high-speed servo motors, vacuum motors, and complete system integration solutions based on special-purpose motors.
The SENYD brand focuses on the field of special-purpose motors. Our core R&D team has over ten years of technical experience in this domain. We adopt a “technology-first, application-driven” strategy. Before launching products to the market, we conduct long-term real-world validation under demanding conditions such as automotive testing, environmental test chambers, semiconductor equipment, and axle testing.
To date, we have served more than 100 industrial customers, and our products have accumulated over 10,000 hours of stable operation. We have achieved industry-leading performance in key technical areas such as wide temperature adaptability and high-speed dynamic response.
We do not pursue the fastest expansion in scale, but rather the highest reliability under extreme operating conditions.
