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Anonymous users2024-01-24Normal, normal engineering door locks are prone to this kind of problems, the main reason is because the installation or use of the marble is too worn out or caused by the marble is too tight. Solution: First, it is strongly recommended to replace the door lock, after all, the engineering door lock is really not very powerful, even if it is easy to use, it does not have any meaning for safety.
The second way: get some lock cylinder lubricant (or 2B pencil lead powder), put it on the key, and reach into the lock cylinder to lubricate it will be much better.
First of all, the national standard for anti-theft lock cylinders is Class A and Class B, and Super B is a level set by the lock cylinder enterprise, which is also called back to do enterprise-level. Answer. >>>More
Panpan how to change the lock and repair it after the problem with the anti-theft door lockIf you understand the principle of the door lock, you can remove the lock yourself, or you can just change the core... >>>More
It will not be difficult for the person to be difficult, and the lock cylinder will cost 180 yuan if it is super B, and yours should not be too expensive.
If it is a cross key, it will cost more than 60 yuan, if it is a flat key, it will be about 80 yuan, and it will be between 180-260 if it is a super B or C level
You can find a lock repair master, they can repair any lock, and they also have all kinds of locks.