Anti core-pulling protection (Dutch “kerntrekbeveiliging”) is protection against “core pulling”: a fast burglary method in which the intruder screws a bolt into the lock cylinder and yanks out the core (the inner workings) in one pull. Without the core, the lock can be opened in seconds. Anti core-pulling protection prevents this by shielding or reinforcing the cylinder.
Two approaches
- Security escutcheon with core-pulling protection — a thick, hardened-steel door plate that covers and reinforces the cylinder so there is no grip on the core. Hardware with an approval mark (such as SKG*) must withstand a high pull-out force
- Anti core-pull cylinder — a cylinder with a break zone or hardened core that prevents it from being pulled out
Application
- Front and back doors of homes, especially doors reachable from the street
- Part of burglary resistance according to resistance classes (e.g. for national security certification schemes)
Points to note
- The cylinder should protrude only a few millimetres beyond the hardware; if it sticks out further, it is easier to grip
- Thicker doors need a longer cylinder — choose the correct length
- Hardware and cylinder must match; a strong cylinder behind weak hardware helps little
Related terms
- Door hardware
- Burglar-resistant hardware
- Burglar-resistant
- Multi-point locking
- Window restrictor
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