Description
PR Cylinder
PR Cylinder for housing complex(two-way rotary cylinder, reversible key type)
- A two-way rotary tumbler cylinder with high security
The PR Cylinder has a 2-way construction consisting of main and side tumblers whose contact surfaces are different, giving 100 billion possible number of key combination. - Enormous number of key combination
Eleven tumblers in eleven chambers, whose main and
sidetumblers are positioned at four-level and two-level
respectively, give the lock 100 billion possible number of key combination. - Superior durability
Like the U9 Cylinder,PR has extreme dust-proof and wear
resistance.
- High security
The cylinder is extremely difficult to pick because the locking
bar does not rotate until all tumblers are aligned at the
same time and the anti-picking structure has a complicated
shape. Also PR is highly resistant to drilling due to the use of
extremely hard parts in the cylinder.
- Available key systems
● Master-keying system
● Keyed-alike system
● Grand master-keying system
● Construction keying system
● Multi-master-keying system
● Double construction keying system
● Common keying system - Square Cylinder available.
Square Cylinder is also available. Specifications differ from those for a standard cylinder.
- As shown in Fig. 1, without the key inserted, the locking
bar is pushed by a spring into a groove on the cylinder
body. Also, the tumblers are pushed by tumbler springs.
In this condition, the cylinder plug is impeded by the
tumblers (because the tumbler notch is not above the
locking bar); therefore, it is impossible for the locking bar
to rise, and it is impossible to turn the cylinder. - When a standard change key is inserted, the tumblers
are pushed in by the key cuts and rotation occurs until
the notch lines up with the top of the locking bar. In this
condition, the taper of the groove and locking bar works
against the spring, and the locking bar is pushed up,
making it possible to turn the cylinder plug.
