Why choose a knob cylinder?
A knob cylinder has a fixed turning knob on the inside. This allows you to open the door without a key. This is convenient when you want to leave quickly, when children or family members do not have the key with them, or when you do not want to leave a key in the lock on the inside.
Convenience on the inside
Open the door quickly without searching for a key.
Safely outside
Handy at front doors, back doors, and escape routes.
SKG 3 security
Strong protection against core pulling and forcing.
What types of knob cylinders are there?
The right knob shape depends primarily on ease of use, appearance, and the location of the door. For frequently used doors, grip is important. For visible doors, the finish can be the deciding factor.
Round button
A practical all-round choice for daily use.
Oval button
Compact, neat, and pleasant when the knob is close to the frame.
Tulip bud
More grip, especially useful for doors that open and close frequently.
Black knob cylinder
Modern finish for black hardware or a sleek door frame.
Buying a knob cylinder: what to look for?
1. Measure the cylinder size
Measure from the center of the screw hole inwards and outwards. If in doubt, use our measuring manual.
2. Choose the button shape
Round is universal, oval is compact, and a tulip knob provides extra grip.
3. Check security
For exterior doors, we recommend SKG 3 with core pull protection and certificate.
Frequently asked questions about knob cylinders
These answers help you find the right one faster. M&C to choose a knob cylinder for your front door, back door, or other exterior door.
What is a knob cylinder?
A knob cylinder is a cylinder lock with a turning knob on the inside. On the outside, you simply use a key. This allows you to quickly open the door from the inside without a key.
Is a knob cylinder safe?
Yes, provided you choose an SKG 3 knob cylinder with core pull protection. The knob is located on the inside; therefore, the security on the outside remains the determining factor.
When should I choose a knob cylinder?
Choose a knob cylinder when you want to easily open a door from the inside, for example for a front door, back door, shed door, or escape route.
What size knob cylinder do I need?
Measure from the center of the screw hole to the inside and outside of the door. The knob side is usually the inside. Carefully check that the cylinder does not protrude too far.
Can a knob cylinder be keyed alike?
Yes, knob cylinders can be supplied keyed alike. You then open multiple doors with the same key, while the knob remains on the inside.
Which tasks and skills are truly crucial to success in this role and which baggage you can eliminate. M&C Which knob cylinder fits best?
For a strong foundation is M&C Suitable for Minos. If you want extra key control or a higher finish, choose M&C Matrix, Condor or Move.
Also important for a knob cylinder
These pages help you choose the right version, size, and security before ordering a knob cylinder.
Cylinder lock with knob: what is it and when do you choose it?
Create a cylinder lock with knob — also known as a knob cylinder or cylinder with a rotary knob — has a rotary knob on the inside instead of a keyhole. You open and close the door from the inside with a simple turn of the knob, without a key. This is ideal for the front door, back door, or an escape route, where you want to be able to get outside quickly.
Create a cylinder lock with rotary knob van M&C It fully retains SKG★★★ security with core pull protection: so you do not compromise on safety for extra convenience. You choose the size, color, and whether the knob is on the left or right yourself, and you can also choose a cylinder lock with a knob. keyed alike have made with the rest of your cylinders.
