Lock Cylinders of Various Types
The European cylinder 40-40, known as the standard lock cylinder, represents the classic and most widely used type of security cylinder. Equipped with 6 pins, it provides additional protection against drilling and picking, which can be included at a minimal additional cost. Typically supplied with five keys, available in flat (economical) or reversible (pinched) versions, this cylinder features nickel finishes.
There are different configurations of lock cylinders to suit various doors and locking systems. These include classic cylinders, detachable or friction cylinders, knob cylinders, and half cylinders.
In terms of security, lock cylinders offer various protective features such as anti-drilling, anti-picking, anti-breaking, and anti-duplication. Some models, less common and from specific brands, have a completely round shape, unlike traditional European cylinders.
The European standard EN 1303:15 defines the classification criteria for lock cylinders based on their security, reliability, and durability characteristics. These criteria include key-related security, attack resistance, and durability over time.
To replace a cylinder, it is essential to know its length, expressed in millimeters. The cylinder's length is measured from the center of the mechanism to the keyhole. The most common lengths include 30-30, 30-40, 40-40, and 40-50 millimeters, with the mechanism usually pointing at 7 or 4 o'clock on a clock face when viewed from the front, although some specific locks may have different positions. Some cylinders have an adjustable mechanism for greater flexibility.
Furthermore, there are independent private certification bodies that guarantee the security, reliability, and durability of cylinders through their own evaluation and classification criteria.
