When the key fits the cylinder the pins inside the cylinder move engaging the bolt sometimes called a latch within the door lock.
Door lock cylinder types.
You will likely see these in sliding doors that can only be locked and unlocked from the inside.
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There are three varieties of these locks.
Find lockset cylinders and assigned or shared use keypad locks.
It has a circular head that houses the lock mechanism and an oval bottom.
The inside of a deadbolt can be operated with a thumb turn or key depending on which option you order.
Locks that are grade 1 offer the highest level of strength and security.
Single cylinder locks are far more prevalent but some homeowners opt to use double cylinder deadbolts for the added.
Types of cylinders deadbolt cylinders.
Types of cylinder locks.
From the outside of the door a key must rotate the cylinder to retract the deadbolt.
It s mainly found in the uk and europe hence the name euro cylinder.
Single cylinder uses a key or rotating thumb turn on one side that actuates the locking mechanism.
The double cylinder is also mounted internally.
This lock is the most common deadbolt type.
It is mounted inside the door and has a twist knob in the interior and key cylinder on the exterior of the door s face.
Cylindrical lever locks can be operated with a key or through the combined use of a key and a push button.
Some exterior door locks are designed to automatically lock when the door closes.
For instance push button lever locks are another popular common commercial door lock type but not all of them utilize a cylinder.
Another type of cylinder most of us use every morning when heading out the door is the deadbolt cylinder.
It s defining feature is its shape see image left.
This is the part of the lock that moves in and out and rests in the carved out part of the door frame known as the box when the door is locked keeping it in place.
By far the most recognisable and easily replaced cylinder lock on the market is the euro cylinder lock.
It s a reflection of the durability of the internal door lock types not the amount of security they provide.