Modulus 0.2 Brass Worm Gear Set 90° Reduction for RC DIY Models
Modulus 0.2 Brass Worm Gear Set 90° Reduction for RC DIY Models
5-Set Modulus 0.2 Brass Worm Gear Set – 90° Reduction Transmission for RC & DIY Models
Upgrade your RC car, DIY robot, or miniature model build with these precision-cast brass worm gears. Each set includes a matched worm and gear pair engineered for smooth 90-degree power transmission and efficient speed reduction — perfect for tight-space drivetrains where accuracy and reliability matter most.
Made in Mainland China.
Why Choose These Worm Gears?
- Premium Brass Construction: Durable, low-friction copper alloy ensures long-lasting performance and smooth meshing under continuous operation.
- Precision Casting: Tight tolerances on every tooth profile for consistent, backlash-minimized transmission.
- 90-Degree Drive Angle: Ideal for redirecting drive shafts in RC cars, servo linkages, and custom model mechanisms.
- Multiple Variants Available: Choose the bore and tooth count that fits your specific shaft and gear ratio requirements.
- 5 Complete Sets per Order: Includes 5 worms + 5 gears — great for prototyping or stocking spares.
Specifications
| Variant | Modulus | Teeth | Worm Hole Ø | Gear Hole Ø |
|---|---|---|---|---|
| 0.2M 12T | 0.2 | 12T | 1 mm | 1 mm |
| 0.2M 15T (0.8/1) | 0.2 | 15T | 0.8 mm | 1 mm |
| 0.2M 15T (1/1) | 0.2 | 15T | 1 mm | 1 mm |
| 0.2M 15T (2/1) | 0.2 | 15T | 2 mm | 1 mm |
| 0.2M 20T (1/1) | 0.2 | 20T | 1 mm | 1 mm |
| 0.2M 20T (2/1) | 0.2 | 20T | 2 mm | 1 mm |
| 0.2M 20T (1/2) | 0.2 | 20T | 1 mm | 2 mm |
| 0.2M 30T (0.8/3) | 0.2 | 30T | 0.8 mm | 3 mm |
Package Contents
- 5 × Worm
- 5 × Gear
Please note: These are mini, custom-sized precision parts. Due to their specialized nature, please allow a little extra time for fulfillment — your patience is greatly appreciated.
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Frequently Asked Questions
Q: What material are these worm gears made from?
A: These worm gears are precision-cast from brass (copper alloy), which offers excellent durability, low friction, and smooth meshing — ideal for miniature RC car and DIY model transmissions.
Q: What does "Modulus 0.2" mean for these gears?
A: Modulus (M) is a standardized measure of gear tooth size. A modulus of 0.2 indicates very fine, small teeth suited to miniature drivetrains found in RC cars, micro robots, and precision DIY models. Always match the modulus of your worm and gear pair for proper meshing.
Q: How do I choose the right variant for my project?
A: Select a variant based on (1) the number of teeth (12T, 15T, 20T, or 30T) for your desired gear ratio, and (2) the worm hole and gear hole diameters that match your existing shaft sizes. The table above lists all available bore combinations to help you find the perfect fit.
Q: What is included in each order?
A: Each order includes 5 sets — that's 5 worm pieces and 5 matching gear pieces — giving you multiple sets for prototyping, replacement, or multi-axis builds.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.