Interchangeable Core Overview and Benefits
– Interchangeable cores rely on a control key for insertion and extraction of combinating components.
– Small format interchangeable cores (SFIC) have a figure-eight shape standardized among lock manufacturers.
– Large format interchangeable cores (LFIC) come in varying sizes.
– Interchangeable cores can be easily extracted and installed into different lock types without disassembly.
– They are adaptable for master keying systems and can be quickly replaced when security is compromised.
History of Interchangeable Cores
– The modern interchangeable core has its roots in a bulkier, pedestal-shaped removable configuration developed in 1919 by Frank Best.
– The classic interchangeable core with an A keyway was introduced by Best Universal Lock Company.
– Over time, interchangeable cores have evolved into a de facto standard for keying interoperability in the commercial door hardware industry.
– Best Universal Lock and Falcon Lock were the original competing companies offering interchangeable cores.
– Now, many OEM and aftermarket door hardware brands produce their own interchangeable cores or offer product options to accommodate them.
Mechanism and Advantages of Interchangeable Cores
– Interchangeable cores require a notch at the tip of each key to align with the combinating pins in the mechanism.
– Conventional cylinders and removable cores use a shoulder near the bow of each key for alignment.
– Interchangeable cores can be machined to fit smaller system configurations, allowing integration and different levels of access control.
– Conventional cylinder and removable core systems have limitations in integrating different pin systems.
– Interchangeable cores offer more flexibility in keying configurations.
Small Format (SFIC) and Large Format (LFIC) Cores
– Interchangeable cores have become a standard for keying interoperability in the commercial door hardware industry.
– SFIC and LFIC cores can be specified from various brands in North America.
– Large format removable cores are not interchangeable with any other make or model.
– Each brand’s interchangeable core has unique features and functions.
– SFIC and LFIC cores have different installation and control mechanisms.
Electronic Lock Cores
– The electronic lock core is a modification of the mechanical lock core.
– It integrates a miniature electronic single-chip microcomputer and does not have a mechanical keyhole.
– The electronic key is used to unlock the lock, with unlocking authority set through software.
– Electronic lock cores provide controllability and traceability, solving the issues of picking mechanical lock cores and frequent replacement.
– They are increasingly applied in various security fields.Sources: https://en.wikipedia.org/wiki/Interchangeable_core
