a worker is in a  hurry because he found his cylinders of press brakes is free-running.He has to stop work and wait for maintaining.However, they can not find any people to help him in his town,so,he sent us emails and mentioned all situation.

Accoding to his words, we think the machine is no quality problem. There are a transmission shaft between life cylinder and right cylinder.It is used to control the depth of cylinder.Please kindly adjust this and check if your problem would be dealt with.

Another reason is cylinder travel.Maybe somebody adjust its travel and you have to return,this is the reason that we do not allow other people to touch your press brakes

As a summary, before sending us your problem, please tell us machine style and date of pruchasing. so, we can make a quick judge for you.