20:1 Worm Gear Wheel Bronze Metal Shaft High Torsion Industrial Robot Parts Replace for 4:1

Feature: 1. Can replace 4: 1 worm gear, provide more torsion or slower output speed 2. The device reduces the chance of reverse drive to almost 0 3. The product is made of bronze worm gear wheel and metal shaft, durable and long service life 4. Simple structure, easy to install and remove 5. High quality and great processing, good accessories for industrial robot Specification: Item Type: Worm GearGear Ratio: 20: 1 Material: Bronze worm gear wheel, metal shaft . Package List: 1 x Worm Gear Wheel1 x Shaft Note: 1. Worm gear wheel mounted on 4.7mm D‑shaft diameter, worm gear shasft mounted on 6mm or 4.7mm D‑type shaft2.