Knob Cylinder at Thirard

What is a Knob Cylinder?

The knob cylinder, also known as a thumbturn cylinder, features a key entry on one side and a knob on the other. This design allows you to open and close a door from the inside without needing a key. The knob cylinder is ideal for securing spaces where ease of access and safety are paramount. The external key entry is fortified based on the chosen security level, while the internal knob allows for quick locking and unlocking without a key.

When to Use a Knob Cylinder?

This type of lock cylinder is particularly recommended for confined spaces or areas open to the public, such as cellars, attics, classrooms, and technical rooms. The thumbturn cylinder prevents accidental lock-ins of individuals without a key. However, it is not advised for use on glass doors, as breaking the glass would allow access to the knob, making it easy to unlock the door. In such cases, a double cylinder lock is preferable.

Key Features and Security:

• Dimensions and Variants: At Thirard, our knob cylinders range from 30x30mm to 40x40mm, similar to a classic barrel. They can be used with a classic key, a reversible key, or be part of a keyed alike system where one key can open multiple cylinders.
• High Security: Our knob cylinders can include advanced protections, such as anti-drill and anti-pick systems, to minimize the risk of break-ins.

Can a Knob Cylinder Be Keyed Alike?

Yes, knob cylinders can be keyed alike. This means that one key can operate several different cylinders, making it convenient for users who need to access multiple locks with a single key. The external part of the knob cylinder is identical to a double entry cylinder, enabling compatibility in keyed alike systems.

Measuring a Knob Cylinder:

To measure a knob cylinder, exclude the length of the knob. Measure from the middle of the cylinder fixing screw hole to the edge of the door on both the interior and exterior sides. This ensures a precise fit and optimal security.

Disengageability:

A knob cylinder is generally disengageable, meaning the knob is fixed to the cylinder bit, which turns simultaneously with the external rotor. This feature ensures that in case of an emergency, such as a fire, occupants can easily unlock the door and exit without needing to find a key.

Why Choose Thirard’s Knob Cylinder?

At Thirard, we provide a wide range of high-quality knob cylinders designed to meet your security needs. Our products are guaranteed for 5 to 10 years and offer unparalleled reliability. Whether you need a lock for a door, cabinet, tool chest, or storage unit, Thirard has the right solution for you. Our knob cylinders are engineered for durability and maximum security, ensuring peace of mind for both residential and commercial applications.

Explore our extensive selection of knob cylinders and other security solutions at Thirard, your premier destination for secure padlocks and more.