01 What Is Euro Profile Cylinder?

01 什麼是歐規鎖心呢？

The Euro Profile Cylinder, also known as a pin tumbler cylinder, is a widely used and essential locking mechanism designed in accordance with European standards. It functions through a series of cylindrical components of varying heights—typically pins and springs—that align within the lock body. When the correct key is inserted, its notches push these pins to the same height, aligning them with the shear line and allowing the cylinder to rotate, thus unlocking the mechanism.

歐規鎖心（Euro Profile Cylinder），又稱為彈子鎖心，是依照歐洲標準設計的鎖心結構，也是鎖具中非常常見且關鍵的核心零件。它的運作原理是透過數個不同高度的圓柱型零件（通常是彈簧或珠子），利用它們的高低差來鎖住鎖心。當使用者插入正確的鑰匙時，鑰匙的齒形會將這些珠子或彈簧推至相同高度，使它們在鎖心的旋轉線上對齊，這時鎖心才能順利轉動，進而開啟鎖具。

There are several types of cylinders, including electronic cylinders, pin tumbler cylinders, and magnetic cylinders. Pin tumbler cylinders can be further divided into American (ANSI) standard and European (EN) standard formats, with the latter being our company's primary focus. In recent years, we have also expanded our offerings to include ANSI-standard cylinders to cater to a broader global market.

鎖心有許多不同類型，包括電子鎖心、珠子鎖心與磁性鎖心等。而珠子鎖心又細分為美規與歐規，其中歐規鎖心正是我們公司主要生產的類型。近年來，我們也逐步擴展至美規鎖心的開發，持續拓展更廣泛的市場。

As the name suggests, Euro profile cylinders are designed to fit lock systems that comply with European norms and are widely used across Europe and other regions that follow EU standards. Their symmetrical oval-shaped profile makes them highly versatile and compatible with various door lock configurations. Depending on operational needs, Euro cylinders come in three main types.

顧名思義，歐規鎖心主要應用於符合歐洲標準的門鎖系統，廣泛使用於歐洲及其他採用歐規的地區。其外型為對稱的橢圓柱狀，可安裝於多種門鎖上，適用性極高。歐規鎖心依使用需求分為單邊、雙邊與轉扭三種。

A half cylinder can only be operated from one side, making it suitable for doors that do not require two-way access. In contrast, a double cylinder can be operated from both the interior and exterior sides, and is ideal for doors that demand secure bidirectional access. A thumb turn cylinder features an internal knob that allows users to lock or unlock the door from the inside without a key. This design is especially favored in modern residential settings due to its intuitive operation and the convenience it brings to everyday use.

單邊鎖心只能從一側操作，常見於不需要雙向開鎖的門；雙邊鎖心則可從內外兩側開啟，適用於多數需要雙向操作的門；而轉扭鎖心則在內側配置旋鈕，無需鑰匙即可轉動開啟，這類設計在現代住宅中特別受到青睞，不僅操作直觀，也大幅提升了日常出入的便利性。

Security is always a top priority in lock design. Euro profile cylinders are often built with advanced security features such as anti-pick, anti-drill, and anti-snap mechanisms. High-security variants may incorporate reinforced housings made of hardened materials to withstand forced entry. Additionally, several international testing and certification bodies assess and verify the security levels of these products. For more in-depth information on certifications, please refer to our related articles.

在鎖具設計中，安全性始終是最重要的考量之一。歐規鎖心通常具備防盜、防撬等多項安全設計。許多高安全性產品甚至採用更強大的防撬結構與堅硬的材料所製作的外殼，有效提升鎖心對外部破壞的抵抗力。此外，也有專業機構負責測試並認證鎖心的安全等級，相關說明我們在其他文章中有更詳細的介紹，歡迎有興趣的讀者點擊參閱。

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• Double-sided (Double Cylinder): Operable from both sides, ideal for exterior doors and areas requiring secure bidirectional access.
• 雙邊鎖心（Double Cylinder）：可從門內外兩側開啟，適用於外門與高安全需求門鎖，提供更高的安全性。
• Single-sided (Half Cylinder): Operable from one side only, suitable for doors that require one-way access.
• 單邊鎖心（Half Cylinder）：僅可從一側操作，常見於倉庫門、辦公室門或機房門。
• Thumb Turn Cylinder: Equipped with a turn knob on the interior side, allowing the user to lock or unlock the door without a key. This type is particularly popular in modern residences due to its convenience and ease of operation.
• 轉扭鎖心（Thumb Turn Cylinder）：內側配備旋鈕，無需鑰匙即可開鎖，提升便利性，特別適合住宅與商業場所。

02 Where Are Euro Profile Cylinders Used?

02 歐規鎖心的用途有哪些?

Euro profile cylinders are globally recognized and widely adopted, thanks to their modular construction, exceptional durability, and robust security features. Their popularity is also supported by government safety regulations and building standards across various regions.

歐規鎖心之所以能在全球廣泛使用，一方面與各國安防政策有關，另一方面則是因為它具備模組化設計、高安全性與優異的耐用性。

In residential applications, Euro cylinders are used in both interior and exterior doors, as well as in security entry doors. Exterior and anti-burglary doors often incorporate double cylinders to enhance security, given their strong mechanical construction and tamper-resistant design. For interior doors, half cylinders or thumb turn models are commonly used to prioritize daily convenience and ease of access, such as in bathrooms and bedrooms.

在住宅應用方面，不論是室內門、外門，或防盜門，都非常適合使用歐規鎖心。防盜門與外門為了有效抵抗非法入侵，通常會搭配具有高防盜功能的雙邊鎖心，其堅固的結構與設計能大幅提升門鎖的防破壞能力。而室內門則常搭配單邊或旋鈕鎖心，更注重日常使用的便利性，例如浴室與臥室門多採用這類結構，開關操作更加直覺。

Beyond residential use, Euro profile cylinders are extensively employed in commercial buildings and public facilities. They can be tailored to suit specific operational scenarios, such as controlled access areas or high-traffic environments. In offices, double cylinders or electronic cylinders are often preferred, enabling efficient control over who can enter or exit while simplifying internal management.

除了住宅，歐規鎖心在商業與公共空間的應用也十分廣泛。它能依據不同使用場景與需求，量身打造專屬的鎖心結構。像是某些空間需要控制出入權限，或有高頻率使用的需求，就特別適合選用具備高度模組化能力的歐規鎖心。辦公室的門鎖多搭配雙邊或電子鎖心，能有效控管進出權限，也更容易進行內部管理。

For storage and warehouse doors, stronger resistance against physical attacks is essential. Our high-security Euro cylinders are built with hardened steel housings and complex internal mechanisms, ensuring robust protection against forced entry and lockpicking.

在倉儲環境中，門鎖往往需要具備較強的防破壞結構，以確保財產安全。高等級的歐規鎖心通常使用硬化鋼外殼與複雜的內部機構，能有效防禦技術性開鎖與暴力攻擊。

In multi-unit properties such as hotels or apartment complexes, thumb turn or double cylinders are most frequently used. When integrated with electronic access systems, they provide residents with an intuitive and secure experience. For public infrastructure—schools, hospitals, and government buildings—requirements often include long-term durability and emergency accessibility.

而像酒店、公寓等多戶型建築，最常選用的是旋鈕鎖心或雙邊鎖心。若結合電子控制系統，不僅能提供住戶更便利的使用體驗，也提升了整體出入安全性。至於在學校、醫院、政府機構等公共場所，則更需要具備耐用性與能夠快速應急的能力。

The widespread adoption of Euro profile cylinders can be attributed to their multi-layered security features—including anti-drill, anti-pick, and anti-bump technologies—and their flexibility to integrate with both mechanical and electronic locking systems.

歐規鎖心之所以能如此廣泛應用，除了其高彈性的模組設計，還有其多層防護機制，例如防鑽、防撬、防撞匙等技術，讓歐規鎖心得以滿足安全性的需求。

Common Applications Include:

主要用途包括：

• Residential front and security doors
• 住宅防盜門：確保家庭安全，防範技術性開鎖與暴力破壞。
• Commercial buildings (offices, warehouses, banks, retail spaces)
• 商業建築：應用於辦公室、倉庫、銀行與零售業門鎖，提升安防等級。
• Public infrastructure (schools, hospitals, government facilities)
• 公共設施：如學校、醫院與政府機構，確保門禁管理的可靠性。
• Smart home and remote access systems
• 智慧門鎖整合：可搭配電子門禁與智能家居系統，提供遠端控制與安全監測功能。

Key Benefits Include:

其廣泛應用的關鍵因素包括：

• Multi-layered security (optional features: anti-drill, anti-pick, anti-bump)
• 多層防護機制：可選擇防鑽、防撬、防技術開鎖等高級防盜功能。
• High compatibility with diverse door and locking systems, High compatibility with diverse door and locking systems
• 靈活適配性：可與多種門鎖系統搭配，支援機械與電子鎖具應用。

03 What Types of Cylinders Does FEDERAL LOCK Manufacture?

03 FEDERAL LOCK製作的鎖心有哪些呢?

At FEDERAL LOCK, we have a long-standing dedication to lock innovation, developing a diverse range of Euro profile cylinders tailored for various security demands and operational environments. Among our double-cylinder offerings, customers can choose between versions with or without pin stacks, as well as models with break-off lines for anti-snap protection. We also offer three distinct locking mechanisms to suit different security strategies.

FEDERAL LOCK 長年專注於各類鎖心產品的研發，針對不同使用需求，開發出多款具備獨特功能與結構的歐規鎖心。以雙邊鎖心為例，我們提供有鎖珠與無鎖珠版本，也有具備折斷線結構的設計，並依上鎖機制區分為三種不同類型，提供用戶更多選擇。

Our cylinders utilize two types of cam connectors—CH Connector and F Connector—each optimized for specific mechanical configurations. These are further divided into Single Clutch and Double Clutch options, providing flexibility for varying door access requirements. Additionally, we provide three keying systems, supporting a range of use cases from individual access to large-scale master key operations.

在結構方面，我們的鎖心連桿分為 CH 連桿與 F 連桿兩大類型，依需求再細分為Single Clutch與Double Clutch，以對應不同的上鎖設計與開關邏輯。鎖匙系統也同樣提供三種不同樣式，滿足從單一使用者到多戶共享的鑰匙管理需求。

To ensure aesthetic integration and corrosion resistance, we offer several surface finishes such as satin nickel, polished brass, bright chrome, and raw brass. Every FEDERAL LOCK cylinder is certified by leading global security bodies, including BSI (British Standards Institution) and SOLD SECURE, meeting criteria ranging from 1-star to 3-star security ratings.

我們提供多樣化的表面處理選擇，包括鍍鎳、亮銅、亮鎳與銅本色等，可依據客戶需求與空間美感選擇最合適的搭配。除此之外，FEDERAL LOCK 的所有鎖心皆通過多項國際權威安全認證，如英國 BSI、SOLD SECURE 等。無論是追求最高等級的三顆星認證，還是一般防盜需求，我們都能提供對應產品。

Moreover, we support full customization, including Master Key Systems, which allow a single master key to open multiple sub-level locks—perfect for apartment complexes, corporate campuses, or managed rental properties. For added functionality, we also offer laser engraving services, making it easier to identify and manage individual locks within a larger system.

此外，我們也支援客製化需求，包括常見的鎖王系統（Master Key System），讓管理者能以一把主鑰匙開啟所有子鎖對於大樓、企業或長租住宅的管理者來說，是極具效率的鑰匙控管解決方案。或是為了方便辨識，也能在鎖心上客製化雷雕。

04 What Are the Key Features of FEDERAL LOCK Cylinders?

04 接下來就來簡單介紹FEDERAL LOCK的鎖心有哪些特色吧

Our Euro profile cylinders incorporate multiple advanced security technologies. One of the most notable is the RE-LOCKING system, which automatically engages an internal locking mechanism if the outer body is damaged or tampered with, effectively preventing forced entry. Another is the Trap Pin system, which activates during unauthorized manipulation attempts, instantly locking the cylinder to block further access. Additionally, the Firing Pin mechanism locks the cam upon impact, making it impossible to rotate the cylinder under attack.

我們的鎖心融合了多項安全技術，包括當鎖心遭受破壞時能自動鎖定的 RE-LOCKING 系統（當鎖心外部受損時，內部機構會自動鎖定，防止強行開啟）、在技術開鎖過程中啟動防護的 Trap Pin 機制（在遭遇技術性開鎖攻擊時，Trap Pin 會立即鎖住鎖心，使開鎖無效），以及可在遭撞擊時即刻鎖定凸輪的 Firing Pin 裝置（當鎖心遭受破壞時，Firing Pin 會鎖定凸輪，阻止未允許的開啟。）這些設計皆大幅提升了鎖心抵抗非授權開啟的能力。

Structurally, we use multi-tiered pin configurations and hardened steel components, ensuring maximum resistance to both forceful and technical entry methods. Whether facing drilling tools, lock-picking instruments, or bump keys, our cylinders offer reliable, multi-layered protection.

在結構設計上，我們採用多段式珠子配置與硬化鋼零件，進一步提升對抗破壞工具的能力。無論是電鑽、撬鎖工具或技巧性開鎖方式，我們的鎖心皆能有效抵抗，提供多層次的保護。

Thanks to their modular architecture, FEDERAL LOCK cylinders are also highly adaptable. Our MSC Pinning Kits allow for quick component replacement, structure adjustment, and user reconfiguration, enabling customers to reduce inventory pressure and streamline on-site installation and maintenance.

模組化的產品設計也讓 FEDERAL LOCK 鎖心在維護與升級上更加靈活。我們提供 MSC Pinning Kits，協助用戶在更換零件、調整結構或因應使用者變動時迅速進行配置，大幅降低庫存與人力成本。