How to distinguish between good and bad Second-hand industrial sewing machine:
1. Be sure to see if the movement is made of metal when purchasing.
2. Are the main transmission parts made of metal?
3. Are the transmission parts of the back half-moon made of metal?
2. Ask the person who bought the machine whether the machine has a rotary shuttle structure or a swing shuttle structure. Generally speaking, the stability of the shuttle structure of the household sewing machine is better, and it is also relatively solid. The structure of the hook is generally easier to entangle. After a long time, the internal bobbin running-in distance will be too large, the sound will become louder, and a series of problems such as tangled thread will be highlighted, making the machine difficult to use. In addition, the machine transmission gear of the rotary shuttle structure is mostly made of plastic material, which is also a disadvantage after a long time.
Second-hand industrial sewing machine Brother automatic industrial sewing machine