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Rain is a conventional 5-pin MX-style mechanical switch. It is intended for keyboards and hot-swap PCBs that accept 5-pin mechanical switches, not Hall Effect or magnetic-switch PCBs.
Not every hot-swap board accepts the two extra plastic locating pins. If your plate or PCB is designed for 3-pin switches only, verify the socket and mounting holes before ordering rather than assuming every hot-swap board is universal.
Rain is intentionally textured through the press rather than tuned for a glassy, friction-free feel. That sandy sensation is part of its character, not a tactile bump, so the switch stays linear while giving your fingers more feedback on the way down.
The rail bottom-out gives the end of the stroke a more defined stopping point. Choose Rain when that combination of texture and linear travel sounds appealing; choose a smoothness-first linear if low-friction movement matters more.
The 37g option is the lightest Rain and bottoms out at 45g with a 22 mm spring. The 42g option sits in the middle at 50g bottom-out, while 48g is the firmest at 57g; both use 20 mm single-stage springs.
All three keep the same rail-bottom-out, full-travel, deliberately textured concept. Choose 37g when lower resistance matters most, 42g for the middle option, or 48g when you want more resistance without changing Rain’s core design.
The switch uses PA66 for the top and bottom housing with a POM-blend stem. Youth Studio's launch material describes the material and mold tuning as part of the effort to make the sandy feedback feel consistent rather than randomly scratchy or snaggy.
Factory lubrication is part of that tuning. The goal is not to erase every trace of friction; it is to control unwanted noise while preserving the characteristic texture. If you normally relube every linear for maximum smoothness, Rain is a switch where that habit can work against the design intent.
37g / 42g / 48g · 70 / 90 / 110 switches
Rain gives you deliberately textured travel without adding a tactile bump. It makes the most sense when that extra surface feedback is something you actively want, not something you plan to polish away.
Rain fits compatible MX-style mechanical PCBs and hot-swap sockets. Check for 5-pin clearance before ordering, and do not treat it as a Hall Effect or magnetic-switch replacement.
10 switches — best for sampling Rain before committing to a full-board pack. Choose 37g, 42g or 48g for resistance, then count your board before selecting 10, 70, 90 or 110 switches. Force and quantity change; Rain’s textured linear concept does not.
Choose your keyboard layout to get a practical starting quantity. Then confirm the exact key count for your board and decide how many spare switches you want for testing or replacement.
Use verified force, travel, mount and lubrication fields to see how this switch differs from nearby alternatives.
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HMX Rain Rail Bottom-Out Linear SwitchCurrent
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|---|---|---|---|---|
| Type Linear | Type Linear | Type Linear | Type Linear | Type Linear |
| Operating force 42 gf | Operating force 45 gf | Operating force 37 gf | Operating force 42 gf | Operating force 40 |
| Bottom-out force 50 gf | Bottom-out force 50 gf | Bottom-out force 42 gf | Bottom-out force — | Bottom-out force 50 |
| Pre-travel 2 mm | Pre-travel 2 mm | Pre-travel 2 mm | Pre-travel — | Pre-travel 2 |
| Total travel 4 mm | Total travel 3.5 mm | Total travel 3.6 mm | Total travel 3.7 mm | Total travel 3.3 |
| Mount 5-pin | Mount 5-pin | Mount 5-pin | Mount 5-pin | Mount 5-pin |
| Factory lube Yes | Factory lube Yes | Factory lube Yes | Factory lube Yes | Factory lube Yes |
The texture is intentional. Rain was designed to keep an even sandy or scratchy sensation through the press instead of trying to feel glass-smooth. It remains linear because there is no designed tactile bump.
The rail bottom-out gives the end of the stroke a more defined stopping point. Rain has 4.0 ± 0.2 mm total travel.
The 37g version is the lightest and bottoms out at 45g with a 22 mm spring. The 42g version is the middle option at 50g bottom-out, while the 48g version is firmest at 57g bottom-out; both use 20 mm springs.
The 42g version on this page is specified at 42g actuation and 50g bottom-out.
It works in hot-swap keyboards that accept 5-pin MX-style mechanical switches. It is not for Hall Effect or magnetic PCBs. Some boards or plates only accommodate 3-pin switches, so check your PCB and plate before ordering.
Yes. The factory lubrication is tuned around the intended textured feel rather than trying to remove every trace of friction. Heavy relubing may change the character that makes Rain distinctive.
No. If your main goal is extremely smooth travel with as little texture as possible, Rain is the wrong design direction. Its sandy feedback is one of the product's defining traits.
The current authoritative product material does not confirm a specific LED or SMD compatibility claim. If lighting compatibility is essential to your build, verify your PCB and switch orientation before buying.
10 switches — best for sampling Rain before committing to a full-board pack. Choose 70 switches for many smaller builds, 90 for many 75% or TKL layouts, and 110 for full-size boards or extra spares. Always count the switch positions on your exact keyboard because layouts vary.