Product Name: Iron Change Gear for Dalian CD6150A/CD6140A LatheSpecifications: 48 teeth (Z48), module 1.75 (M1.75), outer diameter approx. 87.5mm, inner hole size 6-30*8, total length 25mm.Material & Craftsmanship: Made of high-strength cast iron/carbon steel, processed with precision machining and surface treatment, it has excellent wear resistance and transmission accuracy, suitable for lathe operations such as thread cutting and feed transmission.Function & Application: As a key component of the lathe change gear set, it is used to adjust the transmission ratio between the spindle and feed system, enabling machining with different pitches and feed rates. It is the original supporting wearing part for Dalian CD6150A, CD6140A and other conventional lathes.