Cylinder lock SYNOLOGY 40×40 mm matte nickel, long core, 3 keys

Cylinder lock SYNOLOGY 40×40 mm matte nickel, long core, 3 keys is a symmetric profile cylinder designed for doors that require a 40×40 mm dimension with an extended core projection. The lock comes with a matte nickel finish that offers a neutral, low-reflective appearance suitable for a variety of interior and exterior door styles. Supplied as a long-core cylinder together with three identical keys, it is intended for replacement of existing cylinders or installation in new doors where the extended core is necessary for the fitting.

Advantages

The SYNOLOGY cylinder provides a standardized 40×40 mm profile for compatibility with many standard euro-profile lock cases while the long core accommodates doors with deeper fittings or added hardware such as escutcheons. A matte nickel surface improves resistance to visible fingerprints and blends with common metal finishes. The included set of three keys allows immediate use and straightforward key distribution for household members or light-commercial staff. The design focuses on practical fit and everyday reliability without decorative excess.

Suitable for

• Replacement of symmetric 40×40 mm euro-profile cylinders in residential doors
• Doors requiring an extended cylinder projection due to thick escutcheons or additional hardware
• Light-commercial premises where a standard cylinder with multiple keys is needed
• New installations in frames and doors compatible with euro-profile cylinders

Key specifications

• Profile type: symmetric euro-profile cylinder
• Dimensions: 40×40 mm (overall cylinder length in two halves)
• Core type: long/extended projection
• Finish: matte nickel
• Number of keys supplied: 3 identical keys

How to use

Measure the required cylinder length from the faceplate to the center of the fixing screw and to the exterior edge of the door to confirm the 40×40 mm symmetric size and the need for the extended projection. Remove the existing cylinder by unscrewing the fixing screw and sliding the cylinder out with the key turned to the release position. Insert the SYNOLOGY cylinder so the cam aligns with the lock mechanism, secure it with the fixing screw and verify smooth operation of the supplied keys from both sides. Ensure the cylinder is correctly seated and that door hardware such as handles and escutcheons do not obstruct rotation.

Usage recommendations

For reliable operation, periodically lubricate the cylinder with a graphite-based lubricant and avoid oil-based lubricants that can attract dirt. Verify key copies are kept secure and label one spare key for controlled access. If enhanced security features are required, consult a locksmith for compatible higher-security cylinders or additional locking hardware.