It depends on the parameters of your knitting machine. Different knitting opportunities will change the required gears. I have contacted Putai knitting machine in England and Nanyang knitting machine in Shanghai, and the gear parameters of these two machines are different. Putai knitting machine needs two gears and Nanyang knitting machine needs four gears. I suggest you consult the knitting machine manufacturer for details. Lipada Mould hopes to help you.
I have the transmission ratio of one of the above two knitting machines, but it's no use giving it to you if your knitting machine is not the same model.