If the cylinder is removed, a standard keyway cylinder would look like a variant of the picture to the right. The cylinder is what holds the portion of the lock into which you insert your key. Types of Cylinders – Key in Knob/Lever CylinderĪ key in knob/lever cylinder is what you see on a regular knob lock or lever set. Much like mortise cylinders, rim cylinders are available in both standard keyway and interchangeable core formats. ![]() However, there are certain types of outside trim and exit device brands that use mortise cylinders. Ninety-percent of the time, if you have an exit device with keyed access from the outside, you will need to order a rim cylinder. It looks similar to a mortise cylinder but has a long tailpiece on the end. It is generally only used in exit devices. Types of Cylinders – Rim CylinderĪnother common type of cylinder is the rim cylinder. Mortise cylinders are available in both standard keyway and interchangeable core formats. Depending on the depth of the cylinder,you may need to install spacers to make the cylinder flush with the lock. Mortise cylinders are round threaded cylinders that screw into the lock body. Now onto the business at hand – let’s make sense of the different types of cylinders. The descriptions can be a bit technical, so rather than confusing you with words, I’ll let this picture do the talking. The terms cylinder, core, and plug are often used interchangeably. But don’t let this throw you – it’s pretty easy to distinguish each of the types of cylinders.īefore we define the cylinder types, a bit of basic lock component education will go a long way. ![]() The list of options is a long one: mortise, rim, key in knob, key in lever, deadbolt, and profile. When ordering locks, you will most likely need to specify the type of cylinder you need.
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