Cylinder lock insert GERDA WKE1S04040 brass 40-40 mm with 3 keys

GERDA WKE1S04040 brass 40-40 mm cylinder lock insert with 3 keys is a double-sided mechanical cylinder designed for standard residential and commercial doors. The 40/40 mm split profile offers a symmetrical fit for doors requiring equal internal and external cylinder lengths. Constructed from brass, the insert delivers corrosion resistance and reliable mechanical performance for everyday locking and unlocking operations. It is supplied with three identical keys and is compatible with locks that accept GERDA profile cylinders.

Advantages

The brass construction ensures durability and resistance to rust in common indoor and sheltered outdoor environments. The 40-40 mm symmetric profile simplifies installation where a centered cylinder is required and reduces the need to modify the door or lock body. Supplied with three keys, the cylinder supports immediate use and basic key distribution. The mechanical design does not require power or batteries and provides straightforward, low-maintenance operation.

Suitable for

• Standard residential entry doors with centered cylinder requirement
• Commercial interior doors with matching cylinder dimensions
• Replacement of worn or damaged double-sided cylinders
• Doors where a brass finish and moderate corrosion resistance are acceptable

Key specifications

• Cylinder type: Double-sided (double cylinder) insert
• Material: Brass
• Length: 40 mm + 40 mm (symmetrical split profile)
• Operation: Mechanical key-operated
• Number of keys included: 3
• Compatibility: Fits door locks accepting GERDA profile cylinders

How to use

Install the cylinder insert into the existing lock body by removing the fixing screw, inserting the cylinder until it seats flush with the rose or escutcheon, and refitting the fixing screw. Test operation by turning the supplied key from both sides to ensure smooth engagement of the bolt or latch. If necessary, adjust the cylinder position slightly to achieve proper alignment with the door hardware. Use only the supplied keys or authorized duplicates cut to the same profile.

Usage recommendations

For reliable long-term performance, avoid exposing the brass cylinder to prolonged direct weather without shelter. Periodic light lubrication of the keyway with a graphite or dry lubricant will help maintain smooth operation; avoid heavy oils that attract dust. When replacing an existing cylinder, confirm that the 40/40 mm symmetric length matches the door thickness and hardware clearance to ensure a secure fit.