Have you recently moved into a new property and are worried about unaccounted keys from previous owners or maybe a set of keys has been lost connected to a property you own.
If this is something that you are worrying about then fitting a new door lock cylinder is a great solution. All you need to do is remove the existing lock to make sure that you buy the exact same size replacement as there are many sizes of door lock cylinders available.
How do you remove a door cylinder from the lock?
This is a simple operation; all you need to do is unscrew the single screw. You can find this screw located near to the existing lock barrel which is on the door edge.
When this particular screw has been removed, insert the key into the barrel and use this to remove the barrel. Turn the key and push the barrel at the same time and it will come free.
The overall size of the lock cylinder required can be determined by the overall length of the lock. Furthermore the actual size can be determined by looking at the two halves which make up the door lock cylinder which may be of different lengths or even offset.
How to measure a door lock cylinder?
Measuring from one end of the cylinder to the other is incorrect and will result in the wrong size, you need to measure from one end of the cylinder to the middle of the central screw hole and then from the other end to the middle of the central screw hole.
For instance from one end to the middle may be 40mm and from the other end to the middle screw hole may be 50mm. An order would be placed for a 40mm/50mm cylinder.
Suitable for UPVC Door Cylinder Replacement
The prices at Mercers are extremely competitive. Take a look at our top three door lock cylinders and if they aren’t exactly what you want then there are other sizes available in our full range of door lock cylinders.
5mm/45mm Double Euro Lock Cylinder Eurospec UPVC
40mm/50mm Double Euro Lock Cylinder Eurospec UPVC
70mm/70mm Double Euro Lock Cylinder Eurospec UPVC