HMX Gulf 57 Linear Switches

The HMX Gulf 57 Linear is a smooth, linear mechanical switch suited for users who prefer consistent keypresses without tactile feedback or audible clicks. It fits well for typists and gamers seeking a straightforward, responsive feel with moderate actuation force. This switch is not designed for quiet environments, as it is not silent.

Feel & Sound

• Linear action provides a smooth, uninterrupted keystroke without tactile bumps or clicks.
• Moderate actuation force offers a balance between light and heavy keypresses, reducing finger fatigue during extended use.
• Not silent, so it produces noticeable sound when bottoming out, which may be distracting in quiet settings.

Actuation Characteristics

• Actuation force of 50g delivers consistent resistance, suitable for users who want deliberate keypresses without excess effort.
• Total travel of 3.8mm allows for a standard key travel distance, providing familiar typing feedback.
• Bottom-out force slightly higher than actuation force, giving a defined end to each keypress.

Build Quality

• Polycarbonate top housing and nylon bottom housing combine durability with moderate sound resonance.
• Polycarbonate T2 stem material supports smooth movement and reduces friction.
• 21mm spring length contributes to the switch’s consistent force curve.
• Factory lubed, which helps reduce initial scratchiness, a common issue with new switches.

Compatibility

• PCB mount design with 5 pins ensures stable installation on compatible PCBs.
• Supports single LED lighting, suitable for keyboards with basic backlighting setups.
• Unknown if compatible with hot-swap sockets, so may require soldering.

Trade-offs

• Not silent, so less ideal for noise-sensitive environments.
• Force variance of 5 cN means some slight inconsistency between switches, which may affect uniformity.
• Unknown long-term durability and modification potential beyond factory lube.