Nmrv Double Step Helical Worm Gear Box

 Thorough Photographs   Product DescriptionComponents:one. Housing: Die-solid Aluminium Alloy CZPT (RV571~RV090)Cast Iron CZPT (RV110~RV150)2. Worm Wheel: Wearable Tin Bronze Alloy, Aluminum Bronze Alloy3. Worm Shaft: 20Cr Metal, carburizing, quenching, grinding, area...