Dew Axis-4 linear mute mechanical keyboard switch bottom with Japanese silencing oil and 38g operating force

These Dew Axis-4 switch bottoms are engineered components for custom mechanical keyboard builds, focusing on a linear keystroke profile and reduced operational noise. The core design principle replaces standard spring grease with a specialised Japanese silencing oil, targeting a smoother, less audible keypress. With a 1.9mm trigger stroke and a 38g operating force, they cater to users seeking a light, consistent actuation. The construction involves multiple specialised materials, including a POM shaft core and a POK polymer upper cover, assembled into a bridge plug-in shell structure. Sold in a pack of four, they provide the essential parts for modifying or constructing a section of a custom keyboard.

Features and Construction

The switch bottom is defined by its material composition and specific silencing approach. It moves away from conventional switch lubrication to achieve its performance characteristics.

Material and Build

The shaft core is a three-colour assembly with a central POM (Polyoxymethylene) body. POM is selected for its low friction and wear resistance, which can contribute to a consistent feel over repeated use. This core is integrated with a custom-formulated soft silicone gel, which works in conjunction with the silencing oil to dampen sound. The upper cover surrounding the core is moulded from POK polymer, a material noted for its toughness and low moisture absorption. The bottom shell uses a base of PA (Polyamide) reinforced with GF C5, an improved glass-fibre material likely added for structural rigidity and dimensional stability during the keystroke cycle.

Size and Practical Fit

The switch is built around industry-standard dimensions for mechanical keyboard switches, allowing it to fit into typical MX-style switch sockets on custom printed circuit boards (PCBs). The specified trigger stroke of 1.9mm (±0.3mm) indicates the travel distance needed to register a keypress, while the total bottom-out stroke is 3.7mm (±0.3mm). The 16mm long, single-section XC55 spring is responsible for the force curve, providing a light 38g operating force and a 55g bottom-out force. The outer shell uses a bridge plug-in design with large buckles on both sides, which secures the internal components and interfaces with the keyboard plate.

Uses and Placement

As individual switch bottoms, these components are the foundation for a fully assembled keyboard switch. They are intended for hands-on keyboard customization.

Event or Professional Use

For users in environments where keyboard noise is a distraction, such as open-plan offices, libraries, or during live streaming or recording, the muted linear profile can be beneficial. The linear action, lacking a tactile bump, allows for rapid, repeated keystrokes which some programmers or gamers may prefer. The specified force and travel parameters provide a known, repeatable typing experience that can be standardized across a full keyboard build.

Everyday Home Use

At home, these switches allow keyboard enthusiasts to build or modify a peripheral to their exact preference. The linear feel and focus on reduced noise can make for a more pleasant and less intrusive typing experience during long sessions, whether for work, communication, or gaming. The pack of four allows for testing the feel on a few keys or for replacing specific switches on an existing board, such as the often-used spacebar or WASD keys.

Benefits and Buying Value

The value of these switches lies in their specialised construction and the specific typing experience they are designed to deliver, based on the provided specifications.

Reuse and Low Maintenance

The use of durable polymers like POM, POK, and reinforced PA suggests a design focused on longevity through material choice. The silencing oil and silicone gel are integrated during manufacture and are not intended for end-user maintenance, which can simplify ownership. As a core mechanical component, the switch bottom is built to withstand millions of keystrokes as per general mechanical switch standards.

Why Choose This Product

This product is for the keyboard builder seeking a switch with a documented, light linear action and a specific approach to noise reduction via Japanese silencing oil. The detailed specification of materials (POM shaft, POK cover, GF-reinforced PA shell) and mechanical specs (1.9mm travel, 38g force) provides transparency for an informed purchase. It offers a distinct alternative to switches using common grease lubrication and standard plastic composites, making it a component for a tailored typing experience.