Gerda PRO System X WKM4Z Cylinder 30/45 Geared Euro Profile Class D Drill Resistant Nickel

Product Overview

The Gerda PRO System X (WKM4Z) 30/45 Euro profile cylinder with geared drive is an anti-burglary cylinder lock core for mortise locks, commonly used in high-security residential and commercial doors. Certified to the PN-EN 1303:2015-07 standard and awarded classification 1 6 0 B 0 C 6 D by the Warsaw Institute of Precision Mechanics, this product offers verified fire and smoke door compatibility and is rated for heavy-duty, high-frequency operation environments.

Its outstanding distinguishing feature is class D resistance to destructive attacks?providing 5 to 10 minutes of drill resistance and mechanical assault protection, backed by a hardened steel anti-drill plate and additional anti-bump components. This high rating significantly reduces security breach risks in critical infrastructure facilities and sensitive access areas, making it ideal for bulk procurement by security integrators, residential property management, and commercial facility operators demanding top certification and proven tamper resistance.

Key Features

• Anti-burglary class 6 ? highest security level per PN-EN 1303:2015-07 for demanding applications


• Class D drill and mechanical attack resistance ? withstands 5?10 minutes of attack thanks to hardened elements


• Fire and smoke door approval ? permitted for use in certified fire-rated doors


• More than 2,700,000 key code combinations ? increases resistance to unauthorized duplication


• Temperature and corrosion class C ? full functionality from -20°C to +80°C


• 6 tumbler mechanism ? certified durability exceeding 100,000 cycles for long-life professional use


• Supplied with 5 dimple keys, code card, and fixing screw ? complete installation kit included

Technical Specifications

• Cylinder Length: 30/45 mm


• Profile: Euro


• Type: Geared drive (zębatka)


• Security Class: 6 (PN-EN 1303:2015-07)


• Attack Resistance: Class D (5?10 minutes drill/mechanical attack)


• Mechanical Durability: >100,000 cycles


• Key Variations: >2,700,000


• Certification: PN-EN 1303:2015-07


• Fire Door Approval: Yes


• Corrosion Resistance: Class C


• Operating Temperature: -20°C to +80°C


• Material: Hardened steel elements, brass body (typical for GERDA cylinders)


• Finish: Nickel (satyna)


• Supplied Keys: 5 dimple keys with code card

Applications

Designed for installation in high-security residential and commercial entrance doors, including fire-rated and smoke-control assemblies. Used in facilities requiring enhanced attack resistance, such as banks, offices, multi-family buildings, retail units, and industrial complexes. Suitable for bulk OEM fitting by door manufacturers and for retrofitting in existing high-value doors with mortise locks and geared drive mechanisms.

Packaging & Shipping

Each cylinder is individually packed in a factory-sealed box that includes 5 dimple keys, security code card, fixing screw, and installation instructions. Tamper-evident export packaging ensures delivery integrity for both single units and bulk shipments.