Lock cylinder SYNOLOGY D6 30×30 mm Nickel — replacement door cylinder

Replacement lock cylinder SYNOLOGY D6 30×30 mm in a nickel finish designed for use in compatible door locking mechanisms. This 30×30 mm cylinder is a compact, symmetrical profile intended to provide the core mechanical operation of a door lock, enabling secure latching and key operation in residential and light commercial doors that accept a 30×30 mm double or single profile cylinder.

Advantages

The SYNOLOGY D6 cylinder offers a standardized 30×30 mm profile that simplifies installation and replacement in existing locks. Its nickel finish provides basic corrosion resistance and a neutral appearance that matches a range of door hardware. The cylinder is produced to deliver smooth key operation and reliable mechanical engagement with compatible lock cases.

Suitable for

• Residential external and internal doors with compatible 30×30 mm cylinder cutouts
• Light commercial doors and office doors requiring a standard profile cylinder
• Replacement projects where an existing 30×30 mm cylinder must be swapped without modifying the door or lock case

Key specifications

• Profile dimensions: 30×30 mm (symmetrical)
• Finish: nickel
• Function: mechanical cylinder for key operation (double or single profile use where applicable)
• Compatibility: designed for standard euro-style door lock cases accepting 30×30 mm cylinders
• Application: suitable for residential and light commercial door installations

How to use

Before installation, confirm the door and lock case accept a 30×30 mm cylinder and that the cam of the new cylinder aligns with the lock mechanism. Remove the retaining screw from the lock case, withdraw the existing cylinder, insert the SYNOLOGY D6 until the cam engages with the internal mechanism, and secure it with the retaining screw. Test key insertion, rotation, and latch operation with the door in both open and closed positions to ensure correct alignment and smooth operation.

Usage recommendations

For long-term performance, apply a graphite-based lubricant to the keyway periodically and avoid oil-based lubricants that attract dust and debris. If the cylinder is used on an external door, check the fit and sealing around the cylinder to reduce moisture ingress. Replace the cylinder if you notice excessive play, difficulty turning the key, or signs of internal wear.