Simple latches require just a quarter-turn to operate

06-02-2020 | Emka | Subs & Systems

EMKA ex-stock quarter-turns are quick to fit and to operate latch locks, suiting factory to office, computer room to laboratory where quarter-turns are a simple and low-cost latching and locking system. So useful is the quarter-turn concept that new styles, sizes, and specialist designs are continually being introduced in materials such as hi-tech plastic, zinc die or stainless steel to satisfy new applications and more diverse environments. Sizes vary from mini locks, usually for use on very small enclosures up to medium and large which can be employed on larger cabinets or enclosures. Where a single point closure is inadequate, then two quarter-turns are frequently installed.


Quarter-turns are the universal door closing workhorse of the enclosure world often giving IP65 degrees of sealing – a preference is the insert lock with a triangular, square or double bar format, which allows a variable degree or security dependent on the key design, including good leverage where the key doubles as a handle.


Frequently loosely categorised under quarter-turns are many compression latch/locks which are based on the same body pattern. Strictly they latch with a quarter-turn and then compress the gasket with a further 90-degree turn., but provide a considerably enhanced level of sealing, and vibration resistance, such as in stainless steel for pressure washed hygiene areas.

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