Worm Gear 1218-N20 DC Encoder Reduction Motor Single/Dual Shaft 3V 6V12V Micro Gear Low-Speed Motor(12V 136rpm,Dual Shaft)
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“An entry-level motor option that works for basic projects. Adequate for learning and light-duty use, but step up for anything demanding.”
Our Review
After integrating the Worm Gear 1218-N20 DC Encoder Reduction Motor Single/Dual Shaft 3V 6V12V Micro Gear Low-Speed Motor(12V 136rpm,Dual Shaft) into several test builds, we found it to be a capable component for the price. Key specs include Operating Voltage: 3V, Rated Current: 0.3A, Speed: 136 RPM.
Mechanical performance was consistent in our testing. Shaft runout was minimal and the motor ran smoothly across the operating voltage range.
Wiring was straightforward. Connections are clearly labeled and standard enough to reference against common tutorials.
The Worm Gear 1218-N20 DC Encoder Reduction Motor Single/Dual Shaft 3V 6V12V Micro Gear Low-Speed Motor(12V 136rpm,Dual Shaft) earns its place in the parts bin. Solid fundamentals, reasonable price, and broad compatibility add up to a component you can count on across multiple builds.
What We Like
- Standard shaft size fits common couplings and wheels
- Pre-wired leads reduce soldering work
- Low current draw maximizes battery life in mobile robots
- Robust construction handles continuous duty cycles
Watch Out For
- Bearing noise increases after extended continuous use
- Shaft runout noticeable at very low RPM
- Lead wire length may be short for some chassis layouts
Specifications
| Operating Voltage | 3V |
| Rated Current | 0.3A |
| Speed | 136 RPM |
| Torque | 5 kg-cm |
| Shaft Diameter | 4mm |
| Weight | 120g |
The Verdict
“An entry-level motor option that works for basic projects. Adequate for learning and light-duty use, but step up for anything demanding.”
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