If you intended something else — for example:
: Frequently associated with heavy-duty lap seaming (e.g., the side seams of jeans) where durability and high-speed production are required. kansai enkou 87 37 better
While "87 37" isn't a standard single model number, it likely refers to a comparison between two specific configurations or series within the Kansai Special catalog, such as the (multi-needle) or the NW series (top and bottom coverstitch). Kansai Special Industrial Machines If you intended something else — for example: