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Classification of lock cylinder

Views:1     Author:Site Editor     Publish Time: 2020-11-24      Origin:Site

I believe you have more or less contact with the lock cylinder. Now there are many types of lock cylinder on the market. Many people are not clear about the classification standard of lock cylinder. When purchasing lock cylinder, we need to understand the classification and introduction of lock cylinder. We all know that the quality of the lock cylinder determines the safety of the family. We know that the most important part of anti-theft is its lock cylinder, so for the selection of lock cylinder, we should first understand the guide for choosing lock cylinder.



Classification of lock cylinder



Lock cylinder classification standard I: a



In the lock cylinder, the most common is A-level lock cylinder, which is also the lowest level of anti-theft lock cylinder. Almost the ordinary anti-theft doors on the market are using A-level lock cylinder. Usually from the shape of the key, we can see that they are not class a locks. The appearance of this key can be divided into a-word key and a cross. Because their internal structure is very simple, there are few marbles slots inside, and the position is relatively forward, and there is no anti prying ability. They are usually used in or, and it is better not to choose the entrance and exit doors.



Lock cylinder classification standard II: Grade B



Different from A-class locks, B-class locks have double row bullet slots, and their keys have non-standard curves. The anti-theft lock cylinder level is higher. Their lock cores are mainly computer double row, double-sided blade and double-row crescent, which can ensure the anti prying performance of 15 minutes. Now many residential areas or households use this kind of high safety factor b lock cylinder. Due to their higher safety factor, the price of B-class lock cylinder is between 100 and 300 yuan



Guide to purchasing lock cylinder



Introduction: the key is flat or crescent type, with a row of concave or cross keyways on one side or both sides, and convex key groove on four sides; national standard: the number of keys for the pinlock shall not be less than 6x104, and the number of keys for magnetic bullet lock, leaf lock and lever lock shall not be less than 2.5x104, and the difference exchange number shall be one; the theoretical key quantity of mechanical password lock shall not be less than 1x106;



Technical parameters: the anti-theft door resistance abnormal opening time is 30min, anti drilling damage time is 30min, anti sawing damage time is 10min, anti prying damage time is 30min, anti pulling damage time is 30min, anti impact damage time is 30min, anti technology opening time is 5min, mutual opening rate is ≤ 0.01%.



Class a anti-theft door lock core is relatively common. From the technical parameters, its anti-theft performance is the lowest, which is easy to be damaged and impacted. What's more fatal is its high mutual opening rate. This kind of lock cylinder is generally suitable for unimportant living rooms, such as waste stacking room. Even if it is pried open, it will not lose too much financial resources.



How to select the lock cylinder - B level anti-theft lock cylinder



Introduction: the key is flat or crescent type, with two rows of concave key slot or cylindrical multi-point concave key hole on one side or both sides; national standard: the number of keys for bullet lock shall not be less than 3x104, the number of keys for magnetic bullet lock, leaf lock and lever lock shall not be less than 1x104, and the difference exchange number shall be two; The theoretical key quantity of mechanical password lock shall not be less than 6x107, and the actual changeable key quantity shall not be less than 60% of the theoretical key quantity.




Technical parameters: the anti-theft door resistance abnormal opening time is 15min, anti drilling damage time is 15min, anti sawing damage time is 5min, anti prying damage time is 15min, anti pulling damage time is 15min, anti impact damage time is 15min, anti technology opening time is 1min, mutual opening rate is ≤ 0.03%.



Class B anti-theft door lock cylinder is more reliable than A-level anti-theft door lock cylinder in terms of technical parameters, and the price of this class of lock cylinder is also moderate. Therefore, class B anti-theft door is a lock cylinder with high cost performance, which is currently used by most anti-theft doors.



How to select lock cylinder - C level anti-theft lock cylinder



Introduction: the key is flat plate type, with two rows of concave and S-shaped keyways on one side or both sides, or double snake type keyways inside and outside; national standard: since it is a reinforced B-class lock cylinder designed by the enterprise itself, this standard is the same as grade B, so it is not introduced much;



Technical parameters: the anti-theft door resistance abnormal opening time is 15min, anti drilling damage time is 15min, anti sawing damage time is 5min, anti prying damage time is 15min, anti pulling damage time is 15min, anti impact damage time is 15min, anti technology opening time is 260min, mutual opening rate is ≤ 0.0003%.



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