These products are steel flanges for woodturning lathes, also known as face plates or chuck flanges, primarily used to secure wood for turning operations. They connect to the lathe spindle via a central internal threaded hole, while the mounting holes around the edge are used to secure the wood or chuck to the flange surface with screws.
Based on the model numbers you provided, these flanges are primarily available in two thread specifications:
M25/1''-8: This is an imperial thread specification—1 inch with 8 threads per inch—commonly used on woodturning lathes that meet European and American standards.
M333.5 and M182.5: These are metric thread specifications; M333.5 is typically used on large lathes, while M182.5 is suitable for small or precision lathes.
In terms of dimensions, “2-inch,” “3-inch,” “4-inch,” and “6-inch” refer to the outer diameter of the flange. The larger the size, the larger the diameter of wood that can be secured, making them suitable for woodworking projects of varying scales. For example, a 6-inch flange is suitable for turning large-diameter bowls or plates, while a 2-inch flange is better suited for smaller items.
These flanges are typically made of No. 45 steel or stainless steel, with precision-machined surfaces to ensure a precise fit with the spindle and long-term stability. In practical use, selecting the appropriate thread size and dimensions is crucial; otherwise, it may result in unstable installation or reduced machining accuracy.
