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Front door locks

More security and ease of use for heroal front doors

Components of a front door lock

Deadbolt – the deadbolt locks or unlocks the door when the locking cylinder is operated, e.g. by key or fingerprint.

Latch – the lock latch (also called catch) holds the closed door in its position when unlocked. When there is a lever handle, the door can be opened by the handle, without the need of a key. Usually, the latch is bevelled on one side. When the door is closed, the latch is pushed into the lock along its bevelled surface and fits into the recess in the frame. The door is closed.

Mullion – the mullion is the metal element embedded in the door, which remains visible after installation. A mullion usually has two cutouts for fastening.

Lock nut with square hole – the nut is a rotatable element with a square hole for the lever handle. When the handle is operated, the nut transfers the movement to the lock latch. The latch retracts and the door opens.

Lock cylinder – the lock cylinder consists of a housing and a rotatable cylinder core. The cylinder core can only be turned if a matching key is used. Lock cylinders are distinguished in different security levels. The higher the security level, the higher the burglary protection.


Locking variants

Bolt lock

The bolt lock made from steel is a simple, basic locking variant. The bolt engages deeply into the closing parts and thus ensures increased tightening of the door. Bolts are also secured against being pushed back.

Massive deadbolt

A massive deadbolt is the standard locking variant for front door locking systems. The massive deadbolts of the multi-point lock are secured against being pushed back and sawn through.

Latch bolt

The latch bolt extends as soon as the door is locked. The special gliding surface of the latch ensures quiet and smooth closing. In addition, latch bolts are secured against being pushed back.

Automatic latch bolt

After the door is closed, the latch bolt automatically extends 20 mm and thus prevents the door from being pushed back. The door is completely locked after closing, and can only be opened from outside by turning the key. The door can be opened from inside by the lever handle. Thanks to a special coating, the automatic latch bolt locks extremely quietly.

Swivel hook

Swivel hooks provide for increased security of your door lock, as they prevent the door from being levered out in any direction, and secure it against being pushed back. The swivel hooks, made from a high-quality steel alloy, engage deeply into the locking parts and ensure ideal tightening of the door.

Swivel hook with duo-bolt lock

This deadbolt combination combines perfect burglary resistance with highest ease of use, since a swivel hook with duo-bolt lock combines the advantages of a swivel hook and a deadbolt. Therefore, it is considered to be the safest and most powerful type of locking system. It not only effectively prevents the door from being levered out, but also provides for a high ease of use and a perfect tightening of the door. Bolts and swivel hooks are also secured against being pushed back.


Electronic access components

Increased security with the right front door lock

Anti-drilling device

Pins made of hardened steel in the cylinder core and underneath the outer face of the housing make it difficult to drill into the front door lock. Even with special drills, it is very difficult to damage the pins.

Anti-pulling device

The anti-pulling device prevents burglars from breaking the movable cylinder core and pulling it out of the lock. The anti-pulling device can consist of a movable steel plate (pull protection fitting) which is positioned in front of the cylinder core and makes it difficult to apply any suitable tools, or of an extended cylinder core made of steel (pull protection core) which ensures that the cylinder core is anchored in the housing of the locking cylinder.

Multi-point lock

In addition to the deadbolt on the main lock, multi-point locks have additional secondary locks. A three-point locking system has a secondary lock both above and below the main lock. Depending on the size of the front door, the frames are equipped with additional strike plates. The bolts or swivel hooks of the secondary locks also engage in the frame and additionally anchor the door sash.


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