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91
Kailh BOX Spring  Linear

Kailh BOX Spring Linear Switches

This linear mechanical switch suits users who want a smooth, consistent keystroke with a relatively light actuation force. It fits well for typists and gamers who prefer a straightforward, non-tactile feel without added noise reduction. Its waterproof and dustproof design makes it a practical choice for environments where durability is important.</p... Read more
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Compare Kailh BOX Spring Linear vs Kailh BOX Winter Tactile vs Kailh BOX Ice Cream Pro Max Linear Specification

Compare similar switches side by side, or use the comparison table to compare all keyboards!
Kailh BOX Spring LinearKailh BOX Winter TactileKailh BOX Ice Cream Pro Max Linear
91
Kailh BOX Spring  Linear
91
Kailh BOX Winter  Tactile
96
Kailh Ice Cream PRO MAX
0.0 (0)
0.0 (0)
0.0 (0)
  • 40g actuation force
  • 40g bottom-out force
  • 1.6mm pre-travel
  • 3.3mm total travel
  • Stainless Steel spring material
  • Tactile actuation type
  • 38g actuation force
  • 52g bottom-out force
  • 2mm pre-travel
  • 3.6mm total travel
  • Thocky, sound profile
  • Stainless Steel, Steel spring material
  • Released in 2022
  • 45g actuation force
  • 45g bottom-out force
  • 1.7mm pre-travel
  • 4mm total travel
  • POM top housing
  • Muted sound profile

Compared with light linear switches

  • Overall / Value:91.1
  • Materials:86.8
  • Finish:100.0

Compared with light tactile switches

  • Overall / Value:91.3
  • Materials:85.8
  • Finish:100.0

Compared with medium linear switches

  • Overall / Value:96.2
  • Materials:94.2
  • Finish:100.0
Name
Kailh BOX Spring Linear
Name
Kailh BOX Winter Tactile
Name
Kailh BOX Ice Cream Pro Max Linear
Release year
2023
Release year
2023
Release year
2022
Switch type
Linear
Switch type
Tactile
Switch type
Linear
Factory lubed
 
Factory lubed
 
Factory lubed
 
Profile
Standard profile
Profile
Standard profile
Profile
Standard profile
Actuation force
40g
Actuation force
38g
Actuation force
45g
Bottom out force
40g
Bottom out force
52g
Bottom out force
45g
Pre travel
1.6mm
Pre travel
2mm
Pre travel
1.7mm
Total travel
3.3mm
Total travel
3.6mm
Total travel
4mm
Pins
5-Pin
Pins
5-Pin
Pins
5-Pin
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Top Housing Material
PC
Top Housing Material
PC
Top Housing Material
POM
Bottom Housing Material
POM
Bottom Housing Material
POM
Bottom Housing Material
POM
Stem Material
POM
Stem Material
POM
Stem Material
POM
Sound profile
-
Sound profile
Thocky
Sound profile
Muted
Spring type
Long
Spring type
Long
Spring type
Long
Spring length
20mm
Spring length
20mm
Spring length
-
Spring material
Stainless Steel
Spring material
Stainless Steel, Steel
Spring material
-
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
38g
Weight
-
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Product Description

This linear mechanical switch suits users who want a smooth, consistent keystroke with a relatively light actuation force. It fits well for typists and gamers who prefer a straightforward, non-tactile feel without added noise reduction. Its waterproof and dustproof design makes it a practical choice for environments where durability is important.

Feel & Sound

The switch offers a smooth linear feel with no tactile bump or click, making each keypress consistent from start to bottom out. It is not silent, so it produces moderate noise typical of linear switches. The bottom-out feel is firm due to the extended stainless steel spring, which may provide a noticeable feedback on keypress completion.

Actuation Characteristics

With a 40g actuation force and a short pre-travel of 1.6mm, the switch responds quickly to keypresses, supporting fast typing or gaming inputs. The total travel distance of 3.3mm is standard, allowing for comfortable key movement without feeling too shallow or deep.

Build Quality

The switch features a polycarbonate top housing and POM bottom housing, materials known for durability and smoothness. The POM stem reduces friction, contributing to the linear feel. A 20mm extended stainless steel spring enhances durability and provides consistent resistance over time. The switch is factory lubed, which reduces initial scratchiness, a common issue in new switches.

Compatibility

It uses a PCB mount with five pins, ensuring stable installation on compatible boards. The transparent light pipe supports enhanced backlighting effects with SMD LEDs. It is not designed for hot-swap compatibility, so soldering is required for installation.

Trade-offs

The switch is not silent, so it may be less suitable for noise-sensitive environments. Although factory lubed, additional lubrication might be needed for users seeking a smoother or quieter experience. The linear design lacks tactile feedback, which some typists prefer for error reduction. Unknown if it exhibits spring ping or stem wobble.

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