Tactile

WJBY Lab × HMX Longjing Tea S Tactile Switch

HMX Tactile 5-pin Factory Lubed
At a glance

Key specifications

The most important verified numbers for this product, shown before the deeper sections.

45 gfOperating force
3.7 ± 0.3 mmTotal travel
TactileSwitch type
5-pinMount
YesFactory lubed
POMStem material
50 gfBottom-out force
Light tactile; clean/clacky-leaning tendencySound profile
Character

Sound & feel

How this product sounds and feels to type on, described in plain terms.

Sound profile

Specialist descriptions place Longjing S on a clean or clacky-leaning side while keeping the tactile bump light. This is a directional description rather than a measured acoustic result because the case, plate, mounting system, keycaps, foam and desk surface can materially change the finished keyboard sound.

WJBY Lab × HMX Longjing Tea S Tactile Switch — sound profile
WJBY Lab × HMX Longjing Tea S Tactile Switch — typing feel

Typing feel

Longjing S provides a restrained tactile cue rather than a large bump. The 37gf version lowers resistance for easier repeated presses, while the 45gf version adds a little more force. Both remain light-tactile choices built around the same PA66/POM five-pin platform.

Fit & build

Compatibility & build notes

What to check before ordering, and how the build is put together.

Tactile 5-pin PCB Mount Factory Lubed POM Stem

Compatibility

Longjing S uses a five-pin MX-style mechanical footprint. It is intended for conventional mechanical keyboard PCBs and compatible hot-swap sockets, not Hall Effect or magnetic systems. Check that the PCB accepts five-pin switches because boards designed only around a three-pin footprint may not provide clearance for the two locating pins. Both force options are factory lubricated. 5-pin mount — confirm PCB and plate support for your board.

Build notes

Longjing S is a conventional 5-pin MX-style mechanical switch, not a Hall Effect switch. A hot-swap keyboard must specifically accept standard five-pin MX-style switches, so check the PCB and socket before ordering. The 10-switch pack suits testing or replacements; the 70-switch pack can cover many compact layouts, but some 75%, TKL and full-size boards need more, so count the actual switch positions first.

Fit & trade-offs

Decide quickly whether this product fits your build

A strong fit if you want

Typists who want tactile feedback without the fatigue of a heavy or sharply defined bump / HMX users moving from linear switches toward a lighter tactile response with familiar smoothness / Five-pin MX-style mechanical keyboard builds that can use factory-lubed switches without extra prep

Consider alternatives if you prefer

A different switch type

If you need tactile feedback or a silent build, compare other families.

A specific force target

Pick a switch whose operating force matches your preference.

Another build use case

Match the product to how and where you actually type.

Sizing help

How many switches do you need?

Switch count depends on your keyboard's layout. The typical ranges below are a starting point — the exact number depends on the specific model and any extra keys.

60% 61 – 68 keys
65% 66 – 75 keys
75% 81 – 88 keys
TKL 87 – 92 keys
Full-size 104 – 110 keys

This product is available in packs of 10 / 70 switches — pick a pack that covers your layout with a small margin for testing or replacements.

Exact switch count depends on keyboard model / layout (and any novelties or extra keys). Always confirm against your board's official key count before ordering.

Product deep dive

Understand the product before you choose it

Focused sections explain the details buyers care about, supported by the product's specification data.

WJBY Lab × HMX Longjing Tea S Tactile Switch — A restrained tactile direction
CORE EXPERIENCE

A restrained tactile direction

Longjing Tea S is a light tactile switch built around a subtle bump and a longer-travel feel.

It is for buyers who want tactile guidance without a large, abrupt event.

  • 37gf provides the lower-force option for users who prioritize easy repeated presses and lower finger effort
  • 45gf adds resistance while remaining a light tactile option.
  • Both versions use the same verified five-pin PA66/POM product family and factory-lubed construction
Bottom line: A subtle tactile choice with a longer-travel direction.
WHAT MATTERS

A choice between easier and firmer tactility

The 37gf and 45gf options let buyers choose an easier or slightly firmer press while keeping the product’s restrained tactile character.

Construction facts matter as part of the switch format; they do not predict one fixed sound.

  • POM is the stem material for both force options.
  • PA66 is used for both the top and bottom housings.
  • The 22mm single-stage extended KOS spring applies to the 45gf option.
What it means: Choose resistance without changing the subtle-bump intent.
WJBY Lab × HMX Longjing Tea S Tactile Switch — A choice between easier and firmer tactility
WJBY Lab × HMX Longjing Tea S Tactile Switch — Confirm the footprint before choosing quantity
FIVE-PIN FIT

Confirm the footprint before choosing quantity

Longjing Tea S uses a five-pin MX-style footprint. Confirm that the PCB and hot-swap socket accept the two locating pins before ordering a tester or full-build pack.

Once fit is confirmed, choose quantity from the board’s actual switch count and any desired spares.

  • Pre-travel is listed at 2.0mm with a ±0.3mm tolerance.
  • Total travel is 3.7 ± 0.3 mm.
Spec transparency: Verify five-pin fit before planning quantity.
WHO IT SUITS

For a subtle tactile preference

Choose Longjing Tea S when you want light resistance and a restrained tactile event.

Choose a large-bump tactile for stronger feedback or a linear when uninterrupted travel is the priority.

  • 37gf is the easier-press option and is best considered when lower resistance is the main priority
  • 45gf is slightly firmer and is the more consistently specified option.
  • Both options use the same five-pin mount, PA66 housings, POM stem and factory-lubed construction.
Build note: A light tactile option for restrained feedback.
WJBY Lab × HMX Longjing Tea S Tactile Switch — For a subtle tactile preference
Decision support

Compare WJBY Lab × HMX Longjing Tea S Tactile Switch with realistic alternatives

The goal is to make the key trade-offs visible: weight, travel, stock preparation, sound direction, and the type of user each product serves best.

Open full comparison →
Specifications
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Type
Tactile
Linear
Linear
Tactile
Operating Force
45 gf
45 gf
37 gf
55 gf
Bottom-out Force
50 gf
50 gf
42 gf
62 gf
Total Travel
3.7 ± 0.3 mm
3.5 mm
3.6 mm
3.2 mm
Sound Profile
Light tactile; clean/clacky-leaning tendency
Crisp, loud, clacky; bright-leaning tendency
Deep/muted-leaning; build-dependent; not KeebPilot-tested
See embedded sound test
Factory Lubed
Yes
Yes
Yes
Yes
Mount
5-pin
5-pin
5-pin
5-pin
Stem Material
POM
POM
Not specified
Best For
Structured product data

Detailed specifications

General

Brand
HMX
Switch type
Tactile
Mount
5-pin
Factory lubed
Yes

Performance

Operating force
45 gf
Bottom-out force
50 gf
Pre-travel
2 mm
Total travel
3.7 ± 0.3 mm
Sound profile
Light tactile; clean/clacky-leaning tendency
Typing feel
Subtle light tactile bump with selectable 37gf or 45gf resistance

Construction

Stem material
POM
Top housing
PA66
Bottom housing
PA66

Compatibility

PCB mount
5-pin
In the box

What's in the box

Exactly what ships with this product. The switch count and color update with the options you select.

WJBY Lab × HMX Longjing Tea S Tactile Switch — what’s in the box
Selected pack
10 switchs
  • Included switches10 switchs
  • Selected color
Product-specific FAQ

Frequently Asked Questions

Straight answers to the questions that most often decide a purchase.

Longjing S is a tactile MX-style mechanical switch. Its bump is intentionally light and restrained rather than sharply pronounced. Two operating-force options are offered — 37gf and 45gf — so you can choose a lighter or slightly firmer version within the same five-pin PA66/POM product family.
The difference is force. The 37gf version uses 37±5gf operating, 45±5gf tactile and 43gf bottom-out. The 45gf version uses 45±5gf operating, 52±5gf tactile and 50gf bottom-out.
Choose 37gf if your priority is lower resistance and easier repeated presses. Choose 45gf if you prefer a little more firmness. Both are still light-tactile choices, so neither should be expected to feel like a heavy or aggressively tactile switch.
Yes. Both the 37gf and 45gf Longjing S switches are factory lubricated. They are not hand lubed, and a specific lubricant formula is not published.
Yes. The Longjing S is a five-pin MX-style switch. Check the PCB before ordering because a five-pin switch requires clearance for the two additional plastic locating pins.
It can work in a hot-swap keyboard when the PCB and sockets support standard five-pin MX-style mechanical switches. Hot-swap compatibility belongs to the keyboard system rather than the switch alone, so do not assume every hot-swap board accepts five-pin mounting. This conventional switch is not intended for Hall Effect or magnetic-switch PCBs.
Total travel is 3.7 ± 0.3 mm, and conducting (pre) travel is 2.0 ± 0.3 mm.
Count the switch positions on your exact keyboard layout and add a few spares. The 10-switch pack is useful for testing, macro pads or replacements, while the 70-switch pack can cover many compact builds. Some 65%, 75%, TKL and full-size keyboards need more than 70 switches, so confirm your layout before ordering.

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