EU-profile Mortise lock is a important door hardware, Widely acclaimed for its many advantages, It is small in size and can be modified to meet the needs of different occasions. EN12209 is a complete set of clear standards for the mortise lock, which can be used by users to judge the performance of the mortise.
This is the standard lock with latch bolt and dead bolt. Insert the lock cylinder into the mortise lock, and the deadbolt is driven by the cam of the lock cylinder to make the door lock/open. When the deadbolt of the mortise lock is in the open state, press down the lever handle, and the latch bolt will return, the door can be open.
Sash lock is used in the most of interior door and fire-rated door, the mortise lock used for fire-rated door should be fire certified. SDH hardware is one of the most professional manufacturers in the world, the mortise lock made from us with good service life: the latch bolt can be open&close 200,000 times, the dead bolt can be open&closed 50.000 times.
The material is a Important factors determine whether the lock body is fire-rated and durable,
The forend and striking plate are explore parts, so we should choose the corrosion-resistant metal material to make, ss304 is good and ss201 is ok, the steel is not recommended, it rusts easily.
Someone could ask: why the forend has round head and square head? The round head is most used for wood doors, the shape of round head will easy to complete in one go when grooving with a milling cutter.
Why there has so many size of mortise lock?
Leave room for handles with intricate decorations.
Suitable for the wood frame of wood doors. The structure of some wooden doors is supported by a solid wood frame, filled with composite materials in the middle, and the width of the mortise lock should be smaller than the width of the solid wood frame.
Why the mortise lock with 85mm distance has a gap on the top of lock body?
Some user will use the long panel in one piece, the gap is a channel reserved for mounting screws through.
The strength of latch and deadbolt determine the security of mortise lock, SS304 and ss201 is good choose, the zinc alloy is cheap cost and not easy to rust, but the strength is not good. It is suitable for scenarios with low security requirements.
The material of lock case is Steel galvanised with blue coating, the blue coating is Anti-fingerprint coating, The steel lock case protected by the wooden door and zinc coating will not rust.
Compared to sash lock, the passage lock only has a latch bolt, this lock can be used in passage of public buildings. It has no locking function, can only be installed on access doors and doors without security requirements.
The deadbolt lock has a deadbolt only. It can be used in store room,equipment room and rooms with infrequent openings and security needs
Why use the whole lock body to install latch bolt only? If use a small lock body, the cost will be lower. The reason is the automatic production line of the door factory, use the whole lock body, The CNC machine only needs to cut the same groove as the sash lock on the door panel, without changing the parameters.
The lower part of the lock body does not have a hole for installing the lock cylinder, but the same flower as the upper half. User will install a red-green indicator in the flower.
The latch bolt made by nylon and will captured by the magnetic catch box. When the door is opened, the latch bolt will retract into the lock case and not protrude out. This is more secure than a latch bolt. In addition, the latch bolt made of nylon does not rub against the striking plate, and there is no noise.
5. Narrow lock
The feature of this mortise lock is that the backset is short, only 20-30mm. Narrow body locks are used in aluminum profile frame doors. Due to the size of the aluminum profile cavity, the width of the lock body must be narrower.
It is used for storeroom, with a latch bolt and a Anti-plug bolt, when door closing, the anti plug bolt will be pushed into the lock case, and the latch can not toggled by a tool inserted through the door slit.
It is used in large-scale supermarkets, schools, hospitals and other crowded public places.From the outside of the building, a key is required to unlock, and in case of danger, insiders can directly press the door handle to open the door to escape.
