EVVA 4KS half cylinder

SKU

EV.4KS.HZ

Producer No. 4KS HZ SYMO

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€95.15

incl. VAT, excl. Shipping Cost

Delivery Time

3 - 5 weeks

factory profile

Please note that the delivery time may be extended for options marked with *!

Product settings

locking type

single lock

keyed alike + €8.30

cylinder length outside HZ

cylinder finishes

drilling protection

weather protection

number of keys

design cap for key *

colour selection design cap

key with coloured dot *

colour selection colour dot

extended key neck *

colour selection - special requests

Qty

Details

EVVA 4KS half cylinder

EVVA 4KS (4 Curve System) is the most resistant system among mechanical locking systems. With its patented springless curve technology, 4KS is suitable for the toughest applications such as high up in the mountains or in production plants with high levels of dirt. The reversible key offers a comfortable insertion behaviour and turns easily and quietly in the cylinder. Of course, 4KS also has an EVVA-own feature: the overlapping curve milling. This guarantees maximum security and prevents key manipulation within the locking system.

The patented reversible key system is suitable for highly complex structured locking systems.

Patent protection until 2035

Basic length:

from 32/10 mm
measured from the middle of cam
extension in 5 mm steps

Technical characteristics:

modular design (SYMO)
springless technology
locking authorisation query in at least 18 query positions (authorisation positions)
12 springless, massive locking pins are brought into a specific position via positive control of the six key curves and scanned by 2 control bars
locking bar in the core controls the additional coding of the key
carbide drilling protection in core and body
picking and scanning protection
impact key protection
pulling protection through chrome-nickel connecting axle
cam movement 360 degrees, cam removal position 45 degrees
width of cam: 9,3 mm
certified according to DIN EN 1303:2015 160B0C6D

Execution:

reversible key system
vertical, easy key insertion
cylinder body: brass matt nickel plated, cylinder core: base material nickel silver
slide coating of all locking elements
cam adjustable in 8 positions
combination with electronic locking system possible

Key:

key thickness: 2,2 mm
reversible key made of special resistant nickel silver alloy
more stable and ergonomic due to the new bow shape
more compact due to shortened key tip
highest wear resistance
overlapping curve milling protects against key manipulation and ensures maximum safety
easy key insertion through uniquely rounded key tip
optional: key caps, key with coloured dot, key with extended key neck
the original 4KS key is produced exclusively by EVVA and is only available from an EVVA partner.
The fourth hidden curve: One of the three curves on one side runs asymmetrically on the other side. It is the hidden fourth curve that gives the 4KS its name.

Options / Special equipment:

different finishes (Attention: extended delivery time)
weather protection
seawater version

Operational area:

for single- or multi-turn mortise locks and various other locks
garage doors, key-operated switches, arming devices, rolling doors (where the attachment is lateral)
very large properties with a complex locking system structure and a large number of different user groups (EVVA's extensive expansion capability is included in the planning)
industrial enterprises
universities
large retail chains
cultural and leisure facilities

Scope of delivery:

half cylinder incl. 3 or more keys
fixing screw M5
assembly tip: cylinder should be flush with the fitting or rose
Security card

Manufacturer:

EVVA Sicherheitstechnik GmbH
Höffgeshofweg 30
47807 Krefeld
www.evva.com

Technical details

Unlike other locking systems, the locking elements in the 4KS cylinder move along the curves on the key. They are no longer pressed against a spring force. A total of 12 springless, massive locking pins are brought into a specific position via positive control of the six key curves and scanned by two control bars. A locking bar in the core controls the additional coding of the key. In total, the 4KS key is interrogated four times. This is 3 queries more than with other systems and offers maximum security.

The fourth hidden curve
One of the three curves on one side runs asymmetrically on the other side. It is the hidden fourth curve that gives the 4KS its name.

EVVA 4KS cylinder cross-section

EVVA 4KS key features

Modular design (SYMO)
The 4KS cylinder is manufactured in modular design (SYMO) and is therefore more than flexible. It can therefore be adapted to the respective door situation directly on site by a specialist dealer. It is also possible to convert the 4KS cylinder to a specific function (e.g. lockable on both sides) on site. This saves time and costs.

Locking cylinder security
The innovative technologies of the 4KS cylinder offer sustainable protection against illegal opening methods:

Picking and scanning protection
The 4KS cylinder is equipped with several locking pins. It is not possible to tell which locking pin is effective in each individual case. Due to the freely movable position of the locking elements in the core, it is almost impossible to scan a milling pattern for a duplicate key. In addition, the springless function protects against impact picking.
Drilling protection
The carbide metal side control bar, the core drilling protection and the body drilling protection in the 4KS cylinder offer effective protection against drilling.
Pulling and tear-off protection
The carbide metal side control bars and the modular design (SYMO) have a high protective effect against pulling and tear-off attempts.
Impact key protection
With this complicated opening method, burglar professionals use a so-called impact key to try to bring the query positions in the cylinder into the correct position.

Cam position

It is possible to move the cam into different positions. To do this, press the small pin directly on the cam of the cylinder with a pointed object and move the cam to the desired position.

How to measure the cylinder length correctly?

You can also find help in determining the correct length in our Help Center for "Cylinder Gauge.

Options

Cylinder finishes:

standard finish: nickel
optional: brass (front polished), brown patinated, black patinated
for individual design requirements
if desired, homogeneous appearance of door cylinder and fitting
optional finishes cannot be combined with: seawater resistance, dust and weather protection

Please note:
If a different finish, different from the standard finish, is ordered, extended production times may occur.

nickel

brass polished

brown patinated

black patinated

SEW - Seawater resistance:

for cylinders that are exposed to strong environmental influences
cylinder parts susceptible to corrosion are delivered with a special surface finish
Please note:
If you order this option the delivery time will be extended.

SSW - Protection mechanism against dust and weather conditions

Spring-loaded locking plates integrated in the locking cylinder, which open or close automatically when the key is inserted or removed. This design is one-sided on the outside.
The cylinder is extended by 3,3 mm.

Please note:
When ordering this option, the delivery time is extended.

Key with design cap:

colours: black, blue and red, yellow, green and white
material thickness design cap: 7,2 mm
plastic caps for special design requirements for the keys
ergonomic design and high quality for better haptics
easy optical differentiation
simple management of locking systems through colour assignment
consecutive numbering of the key (key with the same locking authorisation receives a consecutive number)
use exclusively for EVVA keys
factory assembly, subsequent opening and retrofitting is not possible