M1 78-Tooth Internal Ring Gear For 1 By 12 Scale Hydraulic Crane And Engineering Truck RC Models Beefed-Up Powder Alloy Turntable Gear For Heavy-Duty Performance And Precise Fit

M1 78-Tooth Internal Ring Gear for 1/12 RC Crane
✔️ Powder alloy gear, 89.9 mm OD, 6 mm thick, 78 teeth, single unit

This internal ring gear is built from durable powder alloy and designed for the chassis turntable of 1/12 scale RC hydraulic excavators and crane trucks. It’s an essential upgrade to boost heavy-duty performance and keep precise alignment during operation.

✅ Powder alloy construction for high wear resistance
✅ 78 teeth, 89.9 mm OD, 6 mm thick
✅ Fits 1/12 scale RC hydraulic excavators and crane trucks
✅ Pre-assembled for easy installation and reliable rotation

💡 What is an internal ring gear used for in RC scale cranes and excavators?

It’s a handy, rugged piece that drives the slewing rotation and keeps motion smooth.

- Handy for the slewing drive in 1/12 scale models
- Provides precise fit to minimize gear backlash
- Supports heavy-duty operation under load