Our selection of replacement cylinder locks will add extra security to your door. We supply many recognised brands of door cylinder including AGB, Cisa, ERA, Fullex, Mila & Winkhaus. Many of the door cylinders that we supply have security features in place able to withstand the common types of attacks, such as anti-snapping, anti-picking, anti-bumping and anti-drilling. Try and choose the best cylinder that you can afford to minimise the impact of a forced entry to your property. For those of you who want to find out the function of a cylinder lock, we have an explanation at the bottom of the page.
A door cylinder is a form of pin-tumbler lock, usually fitted to UPVC doors and commercial doors. The cylinder fits into the door, underneath the door handle. When the key is turned,the pins operate a deadlocking mechanism inside the door. The main advantage of a cylinder lock is that can be fitted without interfering with any other bolted hardware and is easily removed by fixing screw. The most common type of door cylinder are Euro cylinder locks and Oval cylinder locks.
Cylinder locks have a certain number of security ‘Pins’. You can tell how many pins a cylinder has by looking at the dots along the bottom edge (marked in green on the example photograph below).
It stands to reason that the higher the quality of the cylinder, the better your door security. There has been a lot of discussion and media attention in recent years in regards to the vulnerabilities of low quality cylinders. Thieves have developed many different methods to bypass a cylinder including bumping, picking, snapping. The need for high-quality, anti-thief cylinders is a growing concern among property owners.
Cylinders which are reinforced and are designed to withstand forced entry, will protect your property far more successfully than a standard entry-level cylinder.
Lock snapping is a method used by some burglars to gain access to your property very quickly. They have worked out that the weakest point of a door is actually the cylinder itself. The door handle plate can bent upwards to reveal the cylinder. If the cylinder protrudes too far, it can be grasped and snapped using a tool.
The part of the cylinder lock that is vulnerable to attack is the middle of the cylinder itself, where the mechanical part and set screw are both located. The solid body of the cylinder is thinner in the middle, which gives the cylinder a weak point.
Older doors are often fitted with outdated door hardware that can be snapped by twisting the cylinder until it snaps. In some cases the door can even be chiselled away to expose the lock, making it easy to prise out.What can be done to prevent lock snapping?
A preventative measure is to replace your cylinder lock with one that complies with Kite-mark standards. A further way of making your cylinder less vulnerable to attack is to fit an escutcheon plate to the door. This makes it harder to get to the cylinder without having to remove the plate first.
Some cylinders are also duplication protected, meaning that any copies of keys can only be made with the proper authorisation from registered dealers.
The security of your door cylinder can be increased further by fitting a metal cylinder guard to make a forced entry more difficult.