How to Choose the Right Euro Cylinder Lock for Your Door

When it comes to securing your home or workspace, the humble door lock plays a far greater role than most of us realize. One of the most commonly used locking mechanisms across Europe and beyond is the Euro cylinder lock. But how do you choose the right one? Is 60mm enough? Do you need a longer barrel? Let's break it down.

🧠 What is a Euro Cylinder Lock?

A Euro cylinder lock, also known as a barrel lock, is a type of lock mechanism commonly used in doors throughout Europe, and increasingly in North America. It fits into a mortise-style locking body and can be easily replaced or upgraded without needing to change the entire locking hardware.

These locks come in different lengths—typically ranging from 60mm to 80mm or more—to accommodate various door thicknesses.

🔍 Key Considerations Before Buying

1. Door Thickness

Measure your door's total thickness. The length of your cylinder should align with it for a flush and secure fit. Common sizes include:

 
• 60mm Cylinder (30/30) – Standard internal or external doors
 
• 70mm Cylinder (35/35) – Slightly thicker or paneled doors
 
• 80mm Cylinder (40/40) – Often used on fire doors or high-security setups

2. Locking Mechanism

Double cylinders allow locking from both sides. Some versions also include emergency functions, allowing a lock to operate even if a key is left inside.

3. Material Quality

Brass cylinders, like our handcrafted models, offer superior durability and corrosion resistance—especially important for coastal or humid environments.

🛠️ Our Top Cylinder Lock Picks

At MIANDGEI, we blend timeless design with precise engineering. Here are our top Euro cylinder recommendations based on door type and use case:

 
• 🔗 N°49 – 60mm Key Cylinder: A reliable standard for most home or office applications.
 
• 🔗 N°50 – 70mm Key Cylinder: Ideal for paneled or thicker doors.
 
• 🔗 N°51 – 80mm Key Cylinder: Perfect for fire-rated or high-security doors.

✨ Why Choose MIANDGEI Lock Cylinders?

 
• ✔ Made from premium brass – built for longevity
 
• ✔ Precision-machined in Europe
 
• ✔ Comes with 3 keys – ready to install
 
• ✔ Elegant finishes to match any architectural style
 
• ✔ Compatible with most mortise lock bodies

🔎 Frequently Asked Questions (FAQ)

What size Euro cylinder lock do I need?

To choose the right size, measure the thickness of your door and select a cylinder that aligns with that measurement. Common sizes include 60mm, 70mm, and 80mm.

What is a Euro profile lock?

A Euro profile lock is a standardized locking mechanism commonly used across Europe. It features a replaceable cylinder that fits into a mortise lock body and is secured by a single fixing screw.

Can I replace a Euro cylinder myself?

Yes! Replacing a Euro cylinder lock is easy and usually takes less than 5 minutes using a flathead screwdriver and one of the original keys.

What materials are best for door lock cylinders?

Brass is considered one of the best materials due to its durability, corrosion resistance, and smooth operation. All MIMI & GUI cylinders are crafted from solid brass.

Are all Euro cylinders universal?

While they follow the same profile, lengths and features like key type or emergency override can vary. Always check your door measurements before purchasing.