EVVA 4KS knob cylinder

EVVA 4KS knob 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 31/31 mm
• measured from the middle of cam
• extension 5 mm per side
• Ordering information: the knob is always located on the inside of the cylinder.

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
• blocking 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 home position 30 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
• lockable from the outside with key, inside with knob
• 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 cylinder finishes (Attention: extended delivery time)
• different knob designs, standard form AK (optional: KK, GK or X1K)
• weather protection
• seawater version

Operational area:

• front doors, connecting doors, office doors, interior doors, exterior doors, apartment doors, gates, wooden doors, aluminium doors, etc.
• for tubular frame door or full leaf door, security doors
• suitable for all ÖNORM, mortise locks according to EU standard and with PZ perforation
• for burglar-resistant doors of resistance class Wz6
• 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:

• knob cylinder incl. 3 or more keys
• fixing screw M5
• installation tip: When installing, ensure that there is an external projection of max. 3 mm in conjunction with a fitting that cannot be screwed off from the outside!
• Security card