Square combination locks are a type of mechanical lock commonly used for securing valuables, bags, lockers, or gates. The principle behind these locks is based on a series of gears, rotating discs, and a specific sequence of movements, allowing the user to unlock the mechanism by correctly aligning internal components. These locks operate by requiring the user to enter a predetermined numeric code, which is used to unlock the device.

The main components of a square combination lock include a rotating dial, a locking mechanism, and a series of internal discs or gears. The dial is usually marked with numbers that correspond to positions on the rotating discs. When the user turns the dial, it rotates the discs, which are carefully aligned with the locking mechanism at specific points. Each disc has a notch that must align with a pin or lever within the lock to release the internal mechanism and allow the lock to open.

The process begins when the user turns the dial to the first number of the combination. The rotation moves the corresponding disc, aligning it with the internal mechanism. The user then proceeds to rotate the dial in a specific sequence of turns, typically right-left-right or left-right-left, each time adjusting the position of the discs. When the correct alignment is achieved for all components, the lock's internal latch or bolt is disengaged, allowing the lock to be opened.

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SQUARE KEY BRASS PADLOCK
ART. NO.    
SIZE
BE135
35mm
BE140
40mm
BE145
45mm
BE150
50mm