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HMX SU Color Blue R2  Linear

HMX SU Color Blue R2 Linear Switches

This linear mechanical switch is designed for users who prefer a smooth, consistent keystroke without tactile bumps or clicks. It suits typists and gamers seeking a light actuation force with a clear bottom-out feel. Factory lubrication reduces initial scratchiness, making it a good choice for those wanting a quieter, smoother typing experience without additional mods.</p... Read more
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Compare HMX SU Color Blue R2 Linear vs Gateron Milky Yellow Linear vs Keygeek Mingding Linear Specification

Compare similar switches side by side, or use the comparison table to compare all keyboards!
HMX SU Color Blue R2 LinearGateron Milky Yellow LinearKeygeek Mingding Linear
HMX SU Color Blue R2  Linear
Gateron Milky Yellow  Linear
Keygeek Mingding Linear
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  • 45g actuation force
  • 50g bottom-out force
  • 1.8mm pre-travel
  • 3.6mm total travel
  • Nylon stem
  • Released in 2024
  • 50g actuation force
  • 4mm total travel
  • POM stem
  • 48g actuation force
  • 48g bottom-out force
  • 3.8mm total travel
  • High-Pitched sound profile
  • Long pole design
Name
HMX SU Color Blue R2 Linear
Name
Gateron Milky Yellow Linear
Name
Keygeek Mingding Linear
Release year
2025
Release year
2024
Release year
2025
Switch type
Linear
Switch type
Linear
Switch type
Linear
Factory lubed
 
Factory lubed
 
Factory lubed
 
Profile
Standard profile
Profile
Standard profile
Profile
Standard profile
Actuation force
45g
Actuation force
50g
Actuation force
48g
Bottom out force
50g
Bottom out force
-
Bottom out force
48g
Pre travel
1.8mm
Pre travel
2mm
Pre travel
2mm
Total travel
3.6mm
Total travel
4mm
Total travel
3.8mm
Pins
-
Pins
-
Pins
-
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Top Housing Material
Nylon
Top Housing Material
Nylon
Top Housing Material
Nylon
Bottom Housing Material
Nylon
Bottom Housing Material
Nylon
Bottom Housing Material
Nylon
Stem Material
Nylon
Stem Material
POM
Stem Material
-
Sound profile
-
Sound profile
-
Sound profile
High-Pitched
Spring type
-
Spring type
-
Spring type
-
Double stage
 
Double stage
 
Double stage
 
Long pole
 
Long pole
 
Long pole
 
Dust proof
 
Dust proof
 
Dust proof
 
Water resistant
 
Water resistant
 
Water resistant
 
Weight
-
Weight
-
Weight
0.35g
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Product Description

This linear mechanical switch is designed for users who prefer a smooth, consistent keystroke without tactile bumps or clicks. It suits typists and gamers seeking a light actuation force with a clear bottom-out feel. Factory lubrication reduces initial scratchiness, making it a good choice for those wanting a quieter, smoother typing experience without additional mods.

Feel & Sound

  • Linear feel provides a smooth keypress without tactile feedback or audible clicks.
  • Factory lubrication helps minimize scratchiness, contributing to a quieter sound profile.
  • Bottom-out force offers a noticeable but not harsh end to each keystroke.

Actuation Characteristics

  • Light actuation force supports fast, effortless key presses, reducing finger fatigue during long sessions.
  • Short pre-travel distance allows for quick response, beneficial for gaming and fast typing.
  • Total travel length balances responsiveness with sufficient key travel for comfortable typing.

Build Quality

  • Housing made from PA12, a durable nylon material, ensures structural stability.
  • Blue T5 stem offers consistent smoothness and compatibility with MX-style keycaps.
  • 22mm spring length contributes to the linear force curve and bottom-out feel.
  • Factory lubed spring and stem reduce break-in time and initial scratchiness.

Trade-offs

  • Linear design lacks tactile feedback, which may be less satisfying for users who prefer noticeable keypress confirmation.
  • Force variance of 5 cN means slight inconsistency between switches, potentially noticeable in large key sets.
  • Unknown wobble and ping characteristics, which could affect feel and sound for some users.

Use Cases

  • Good for gamers who want quick, smooth key presses without distractions from tactile bumps or clicks.
  • Suitable for typists who prefer a quiet, light linear switch with minimal break-in.
  • Less ideal for users seeking tactile or clicky feedback for typing accuracy or preference.

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