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Radiation-Resistant Servo Motor KSSM Series from China Factory - Ideal for Hot Cell Multi-Axis Gripping Mechanisms, Suppliers
Options
- Safe brake
- 48/110VDC winding voltage
- Custom cable lengths
Ordering Information
① Product series
KSSM series servo motor
② Winding voltage
48=48VDC
220=220VAC
380=380VAC
220=220VAC
380=380VAC
③ Stroke length
400 = 400W
750 = 750W
1800 = 1800W
3800 = 3800W
750 = 750W
1800 = 1800W
3800 = 3800W
④ Safe brake
Blank = without safe brake
B = with safe brake
B = with safe brake
⑤ Environmental temperature ratings
| Environmental temperature rating code | Temperature range (℃) | Vacuum class (Pa, optional) | Radiation resistance (Gy, optional) |
|---|---|---|---|
| RHT | -20~+200 | 10-3 | 106 |
| SHT | -20~+200 | 10-3/10-5/10-7 | - |
| HT | -20~+150 | 10-3/10-5/10-7 | - |
| NTL1 | -40~+85 | 10-3/10-5 | - |
| NTL2 | -60~+120 | 10-3/10-5 | - |
| NTL3 | -65~+125 | 10-3 | - |
| NTL4 | -60~+150 | - | - |
| NTL5 | -80~+40 | 10-3 | - |
| SLT* | -196~+40 | 10-3/10-3/10-3 | - |
| L*H* | customized | customized | customized |
*It is recommended that, when the KSSM servo motor is operated in the SLT temperature range (-196 to +40℃), the speed should be limited to a maximum of 300rpm. Contact us for details.
⑥ Vacuum class
Blank = Non-vacuum
V3 = Low pressure or vacuum to 10-3Pa
V5 = Vacuum to 10-5Pa
V7 = Vacuum to 10-7Pa
V3 = Low pressure or vacuum to 10-3Pa
V5 = Vacuum to 10-5Pa
V7 = Vacuum to 10-7Pa
⑦ Radiation resistance
Blank = No radiation resistance
RH = Radiation resistance (total dose 106Gy)
RH = Radiation resistance (total dose 106Gy)
Description
Hot cells used in nuclear fuel reprocessing and radioactive waste management present a uniquely hostile environment: intense gamma and neutron radiation, restricted access, and the need for remote manipulation. The KSSM series radiation-resistant servo motor has been specifically developed for such conditions. This radiation-resistant servo motor can endure cumulative ionizing doses up to 1×10⁶ Gy without degradation, as its winding encapsulation, bearing grease, and position sensor all utilize radiation-stabilized materials. Stainless steel construction not only resists corrosion but also simplifies decontamination procedures. Within a hot cell multi-axis gripper, the radiation-resistant servo motor actuates shoulder, elbow, and wrist joints, while a resolver furnishes absolute angular feedback, enabling precise teleoperation. Because hot cells preclude hands-on maintenance, the radiation-resistant servo motor must demonstrate exceptional longevity — and the KSSM series has passed accelerated life tests exceeding 20,000 hours of continuous duty. Furthermore, this radiation-resistant servo motor operates across a temperature window of -60℃ to +120℃, accommodating the self-heating effect of radioactive decay without supplementary cooling. Deployed in national projects such as vitrification of high-level waste and spent fuel reprocessing, the radiation-resistant servo motor powers remote manipulators and transfer carts. Without a radiation-resistant servo motor of this class, automated hot cell operation would remain impractical. The KSSM series radiation-resistant servo motor thus delivers the ruggedness and longevity required for nuclear environments, reinforcing the indispensable status of radiation-resistant servo motors in radioactive material handling.
Frequently Asked Questions
Q: What radiation level can the KSSM series radiation-resistant servo motor withstand?
The KSSM series radiation-resistant servo motor is designed to endure cumulative ionizing doses up to 1×10⁶ Gy without degradation, utilizing radiation-stabilized materials for winding encapsulation, bearing grease, and the position sensor.
Q: What is the operating temperature range of these servo motors?
The standard operating temperature window ranges from -60℃ to +120℃. However, specific ratings are available for extreme conditions, such as the SLT rating which supports temperatures from -196℃ up to +40℃.
Q: What is the speed limitation when operating in the SLT temperature range (-196 to +40℃)?
For operations within the extreme SLT temperature range, it is recommended to limit the motor speed to a maximum of 300rpm.
Q: What feedback mechanism does the KSSM series use for precise teleoperation?
The KSSM series servo motor utilizes a resolver to furnish absolute angular feedback, ensuring high precision during remote manipulation in hot cell environments.
Q: What is the tested lifespan of the KSSM radiation-resistant servo motor?
To meet the demands of maintenance-free operation in hazardous zones, the KSSM series has successfully passed accelerated life tests exceeding 20,000 hours of continuous duty.
Q: What options are available for winding voltage and safe brakes?
Winding voltage options include 48VDC, 220VAC, and 380VAC (with custom 48/110VDC available). The motor can also be configured with or without a safe brake.










