At HOTEC MOTOR, we don’t just supply high-quality DC gear motors—we also provide value-added services to ensure your motors perform reliably in real-world applications. Among these services, wire soldering and heat shrink tubing are critical for durability, safety, and optimal performance.
Why Add Heat Shrink Tubing After Soldering?
When wires are soldered to motor terminals, leaving the joints exposed can lead to electrical failures, corrosion, or mechanical damage. Here’s why we recommend heat shrink tubing for most of our gear motors:
- Electrical Safety – Prevents short circuits by insulating solder joints from accidental contact.
- Mechanical Protection – Reinforces connections, reducing strain from vibrations and movement.
- Environmental Resistance – Seals out moisture, dust, and chemicals that could degrade the connection.
- Long-Term Reliability – Ensures stable performance in demanding applications (robotics, automation, medical devices, etc.).
Our micro gear motors (from 12mm to 56mm in diameter) are compatible with this service—except for one model.
Exception: N20 Gear Motors (HT-SOG12 Series)
The N20 gear motor has very short terminals, making heat shrink tubing ineffective because:
- The terminals may remain exposed even after shrinking the tube. Please refer to the video as below:
- The plastic motor housing can melt if reworked, causing terminals to retract.
Why Not Use Epoxy or Resin?
Some might consider epoxy resin as an alternative, but this isn’t viable for N20 motors because:
- Stringing Risk – Excess epoxy can seep into the open gearbox, contaminating gears and grease.
- Drying Issues – Curing epoxy requires a drying chamber, which can evaporate the gearbox grease, leading to premature wear.
The Best Solution: Hook Soldering
For N20 motors, we use hook soldering—a secure method that ensures strong connections without risking damage. (Check the attached photo for reference.)
Custom Solutions for Your Needs
At HOTEC MOTOR, we specialize in customized DC gear motors tailored to your exact requirements. Whether you need:
- Pre-soldered wires with heat shrink tubing (for most models)
- Hook soldering for N20 motors
- Expert advice on motor selection & integration
Our experienced engineering team is ready to assist you in optimizing performance and reliability.
