In brief
The M47 Classic is the first grinder Kinu launched, and still the most heavily built of its M47 hand grinders. It pairs 47 mm conical burrs with a stepless adjustment, in an all-metal body. Kinu sells it direct and ships to US customers from its own store.
Homegrounds, reviewing the M47 line, says the Classic, Simplicity and Phoenix share identical internal mechanics and the same burr set. What the Classic adds is metal where the others use ABS plastic. That includes a stainless steel funnel and a steel catch cup held on by 11 magnets.
The trade-off is cost for feel. You pay more for the build, not for a different grind. Like the rest of the M47 line, it is strongest at espresso and fine filter, and weaker at coarse sizes.
What it does well
- All-metal body and internals, including a steel funnel, per Kinu
- Burrs auto-centred on a Morse taper design, per Kinu
- Stepless dial with a zero point and 50 marks per turn, per Prima Coffee
- Homegrounds praises its build quality and says grinding is effortless
- Five-year warranty and a travel case included, per Kinu
Where it falls short
- Homegrounds calls the Classic's price hard to justify over the cheaper M47s
- Heaviest of the M47 line, per Prima Coffee's comparison
- Homegrounds says coarse grinding is not the M47's specialty
Specs
- Type
- Hand grinder, Conical burrs
- Burrs
- 47 mm conical, coated, self-centring
- Adjustment
- Stepless, 50 marks per turn, 0.01 mm per mark
- Power
- Hand
- Weight
- 1,175 g
- Capacity
- 40 g (Kinu)
- Body
- All-metal, stainless steel, with an 11-magnet steel catch cup
- Warranty
- 5 years (Kinu)
Where to start on the dial
Espresso 14 clicksMoka pot 22 clicksAeroPress 31 clicksPour-over 43 clicks
Every method on the settings chart →On this page · 5 sections
What it does well
The build is the reason to choose it. Kinu lists an all-metal body and internal parts, and burrs auto-centred using a Morse taper design. Homegrounds calls it a sturdy grinder with excellent build quality, and says precision machining makes grinding easy.
The adjustment suits espresso. Prima Coffee lists 50 marks per turn, each moving the burr 0.01 mm, with a visible zero point. Kinu says you can adjust in steps as fine as 5 microns, because there are no detents.
Daily use is smooth. Kinu fits four ball bearings across the body and handle knob. Homegrounds says the M47 is "a joy to use, rather than a workout."
Where it falls short
Value is the main complaint. Homegrounds notes that the Simplicity and Phoenix both cost much less than the Classic. Unless you are set on the magnetic catch cup, it says, the cheaper models "offer far better value for money."
Weight cuts both ways. Kinu gives 1,175 g, and Prima Coffee's comparison shows it as the heaviest of the three M47s. Prima lists the Phoenix at 715 g.
Coarse grinding is not its strength. Homegrounds says the M47 handles coarser grinding but "that's not its specialty," and suggests the Comandante C40 for coarse pour-over.
Who should buy it, and who shouldn't
Buy it if you brew espresso, moka pot or fine filter and want a hand grinder built to last. It suits someone who will use it daily at home and values a metal, magnetic catch cup.
Skip it if you want the M47 grind for less money; the Phoenix has the same burrs, per Homegrounds. Skip it too if you brew mostly French press or coarse pour-over, or need something light to carry.
How it compares
The Kinu M47 Phoenix is the closest alternative. It shares the burrs and internals but uses ABS parts, and Prima Coffee lists it at 715 g. For most buyers, Homegrounds suggests the cheaper model is the better value.
The 1Zpresso J-Ultra is another espresso-focused hand grinder, with an external dial in place of stepless marks. The 1Zpresso J-Ultra vs Kinu M47 Classic page shows both dials for each method.
The KINGrinder K6 costs far less and still reaches espresso. KINGrinder gives it an external dial at 16 microns per click, so you can count back to a setting. See KINGrinder K6 vs Kinu M47 Classic for the settings side by side.
Owning it
Kinu's product page does not set out a cleaning routine, and Homegrounds does not cover one. The general hand grinder cleaning guide walks through brushing the burrs and catch cup.
Kinu offers a five-year warranty on all its grinders.
Because the dial is stepless, note your own positions from the zero point; the stepless grinder entry explains how. When you first set it up, find the zero point and work outward, as the dial-in guide describes. The settings chart on this page gives a starting point for each brew method.
Also worth a look
Sources
- Kinu: M47 Classic
- Kinu: grinder range and US shipping
- Prima Coffee: Kinu M47 Classic
- KINGrinder: Comparison of the KINGrinder models
- Homegrounds: Kinu M47 review
By Jeff Gluck · Checked 2026-10-21