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Why the security door lock cylinder can be opened from the inside, hard to open outside?
Dec 12, 2017

Recently, many people have asked why the security lock cylinder can be opened from the inside and hard to open outside.

In fact, it is difficult to open there are 4 kinds of situations:

1. The lack of lubrication in the lock cylinder, causing the lock cylinder twist, a little hairpin, can scratch some of the pencil core powder, add the lock cylinder, this can play a lubricating effect, do not add grease in the lock cylinder Material.

2. Security door a bit tight, open the door, you can push it in the door forcefully twist the key, may be easier.

3. Anti-theft door, the world under the rod of the lack of oil, to stick some oil in the world pole.

4. The lock itself is faulty, to replace the lock or the lock.


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    Address: No.1 Dongsan RD, Xinlian Industrial Area, Lishui Town, Nanhai District, Foshan City, Guangdong Province, China
    Mob: +86-13826111091
    Tel: +86-757-85619957
    Fax: +86-757-85619955

    Email: hyh5@china-hyh.com


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