Kingrinder · Conical burrK4
A budget titanium-burr hand grinder built for espresso: 48mm conical burrs, external click adjustment, and shockingly good syrupy shots for the price. Now discontinued and replaced by the K6.
The short version
This is the grinder that made a lot of people question why they'd spend three times as much on a hand grinder for espresso.
Accept that it's discontinued, so buying one now means secondhand or leftover retailer stock, and that Kingrinder itself steers new buyers to the K6.
Why people buy it
- 48mm titanium-coated conical burrs deliver round, syrupy espresso shots well above its price class
- External adjustment ring with 60 clicks per rotation at 16 microns per click gives genuinely fine-grained dial-in
Why they don’t
- Discontinued by the manufacturer; the K6 is now the only model sold new
The full tally
- 48mm titanium-coated conical burrs deliver round, syrupy espresso shots well above its price class
- External adjustment ring with 60 clicks per rotation at 16 microns per click gives genuinely fine-grained dial-in
- Drill-compatible shaft turns tedious espresso grinding into a non-issue
- Near-zero retention with a simple flick or spatula pass, and full teardown for cleaning
- Discontinued by the manufacturer; the K6 is now the only model sold new
- Narrower and less clean-tasting on filter/pour-over compared to the K6's stainless burr
- Complete disassembly is possible but more technical than simpler rivals
What the community knows
Years of owner threads, distilled — well regarded.
The budget hand-grinder the community points beginners to before spending on a 1Zpresso.
Value
price-to-performance the community respects
Beginner fit
kind to first-timers
Ceiling per dollar
how far the cup can go, per dollar
All 8 community measures
price-to-performance the community respects
shows up every morning, year after year
parts and repairs — you are never stranded
mods, guides, and community know-how around it
kind to first-timers
years before you outgrow or replace it
how far the cup can go, per dollar
Worth knowing before you buy — Most owners who keep it long-term say they wish they'd spent the extra $40-60 on a 1Zpresso JX sooner — gets replaced rather than kept as a secondary.
Known weak points — Burr alignment drift reported anecdotally; inconsistent grind texture complaints in earlier lots (unknown if resolved); limited data on bearing wear over years.
The measurements
Scored 0–5 on the same rubric as everything on file — the words matter more than the numbers.
The measurements
0–5, one rubric- Espresso
- reference4.5
- Versatility
- narrow2.5
- Built to last
- durable3.5
Position in the market
Every dot is a rival, measured the same way. The gold one is this.
- Upper half for espresso suitability
- a higher ceiling than 112 of the 154 grinders we’ve measured
- A value pick at this level
- 100% of grinders this capable cost more
- Lower half for build
- sturdier than 25% of the field, by the community’s own record
Every dot is a grinder measured on the same rubric. See the whole market
Living with it
The part spec sheets skip: counter space, upkeep, and what owners learn later.
The honest note — Owners who want more clarity for filter/pour-over typically move to the K6 (same body, stainless burrs) or a larger flat-burr electric grinder; those staying espresso-only often stick with the K4/K3 lineage or step up to a single-dose electric like a DF64.
The full spec sheet
- Class
- Hand grinder
- Burrs
- 48mm conical
- Drive
- Hand-cranked
- Adjustment
- Stepped (micro)
- Clarity lean
- Syrup & body
- Espresso suitability
- 4.5/5
- Brew versatility
- 2.5/5
- Retention
- ~0.2 g
- Single dosing
- Yes
- Hopper
- 35 g
- Workflow demand
- 4/5
- Maintenance
- 2/5
- Noise
- 0/5
- Build longevity
- 3.5/5
- Dimensions
- 5.5 × 5.2 × 17 cm
Before it arrives
What completes this grinder — the faded pieces can wait.
Coffee scale with timer — Espresso is a ratio. A 0.1g scale with a built-in timer is the single biggest consistency upgrade for any manual machine.
- Coffee scale with timer — Espresso is a ratio. A 0.1g scale with a built-in timer is the single biggest consistency upgrade for any manual machine.
- Dosing cup — Pairs with single-dose grinding — grind into the cup, swirl, and transfer to the portafilter cleanly.
- Grinder cleaning kit — Brushes and grinder tablets keep retention and stale grounds in check.
Feed it right
Week one is dial-in — and stale beans will lose it.
Coffee more than a few weeks past roast won’t extract predictably, and a new grinder gets blamed for it. These burrs pull syrup — naturals and classic medium roasts play straight into their character.
Pick your coffee — any of these dials in beautifully here:
Highland Elixir - Papua New Guinean Sigri PlantationSCA 86Medium-dark · Wahgi Valley, Western Highlands · WashedBright Citrus · Caramel SweetnessSyrup and body, matched to these burrs.CA$22.43 · roasted to order
Lavabloom - Indonesian Sumatra MandhelingMedium-dark · Mount Leuser, Sumatra · Wet Hulled (Giling Basah)Dark Earth · Bittersweet ChocolateSyrup and body, matched to these burrs.CA$19.02 · roasted to order
Wild Ember - Ethiopian Buno Dambi UddoSCA 92Medium roast · Odo Shakiso, Guji Zone, Oromia · NaturalBlueberry · MarmaladeSyrup and body, matched to these burrs.CA$26.83 · roasted to orderWhole bean, dated, ready for your burrs the week it lands.
Roasted to order, daily, in Ajax, Ontario · ships Canada-wide. We’re the roastery behind this database — measuring the machines is how we make sure the coffee gets a fair shot.
On film
How it runs on camera, from around the community.
Common questions
Is the Kingrinder K4 still available to buy new?
No. Kingrinder discontinued the K4 and now sells only the K6, which uses the same body but stainless steel burrs instead of titanium-coated ones. You can still find leftover K4 stock at some retailers and on the secondhand market.
What's the real difference between the K4 and K6?
Both share the same aluminum body, 48mm conical burr geometry, 60-click external adjustment ring, and 16-micron steps. The only difference is the burr material: titanium-coated on the K4 versus plain stainless steel on the K6, which nudges the K4 toward syrupy espresso and the K6 toward cleaner filter cups.
Can the Kingrinder K4 handle pour-over or French press?
It can grind coarse enough for both, but owners consistently describe it as an espresso-first grinder that's merely adequate on brew methods, unlike the K6 which is tuned to be more balanced across the board.
Worth comparing
Turin / MiiCoffee
DF54
A 54mm flat-burr single-dose electric grinder that brings near-zero retention, stepless adjustment, and a plasma ionizer to a price bracket that previously offered only conical burrs — distributed under multiple private labels including Turin, MiiCoffee, and others.
US$229–249
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