ROK GrinderGC Manual Coffee Grinder – Portable Stainless Steel Conical Burr Grinder with Adjustable Settings for Smooth Grinding, Ideal for Espresso, Travel & Camping – Silver
$249.00
Price: $249.00
(as of Mar 28, 2025 05:22:33 UTC – Details)
Product Description
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Customer Reviews
2.7 out of 5 stars 2
4.0 out of 5 stars 14
3.8 out of 5 stars 39
3.6 out of 5 stars 60
5.0 out of 5 stars 3
4.0 out of 5 stars 370
Price
$59.00$59.00
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— no data $249.00$249.00
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Material/Color
Glass, Silicone Black Silver Aluminum Aluminium, Steel, and Glass Chrome and Aluminum
Capacity
250g Coffee 1000 Milliliters 1 Cup – no data
1 Cup 1 Cup
Product Dimensions
4.33″L x 3.94″W x 4.33″H 6″D x 6.11″W x 11.42″H 14″D x 14″W x 14″H 12.71 x 8.94 x 8.11 in 30.9 cm x 26.9 cm x 20.1 cm 3.5 lbs and 11.5 inches tall
Special Feature
Zero Air Coffee Storage Non-electric Manual and Reusable Non-electric grinder Milk Frother Manual
Coffee Maker Type
All Espresso Machine Espresso Machine All Espresso Machine Espresso Machine
Custom Precision: Fine-tune your grind with this manual coffee grinder, offering a full range of adjustments from coarse to espresso-fine. Its hardened steel burrs deliver consistent, flavorful grounds, whether you’re making a delicious pour-over, or rich espresso.
Effortless Quiet Grinding: Enjoy a quiet, smooth grinding experience with this hand coffee grinder. The manual design offers complete control over the grind, without the noise of electric machines, creating a peaceful coffee-making ritual.
Built to Last: Crafted from premium materials, this manual grinder is built for long-term durability. It’s designed to last for years, with easy burr replacements to ensure consistent grinding performance over time.
Sustainable Efficiency: Requiring no electricity, this manual coffee bean grinder reduces energy use while providing premium, fresh coffee grounds. Ideal for eco-conscious users, this grinder supports a sustainable lifestyle while delivering exceptional grinding performance.
Sleek and Compact: Its compact, stylish design makes it easy to store or carry, whether you’re at home or on the go. The wide hopper ensures convenient grinding, making it ideal for travel, a camping trip, or daily use.
13 reviews for ROK GrinderGC Manual Coffee Grinder – Portable Stainless Steel Conical Burr Grinder with Adjustable Settings for Smooth Grinding, Ideal for Espresso, Travel & Camping – Silver
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SKYSOLDIERDOC –
Grinds light roasted beans
1st ROK grinder purchased while posted to Germany. Worked great with one coffee bean spitting out of open hopper every time. Wife took that one still working perfectly. Second arrived with a loose part in gears that caused plastic geRs to break off. Manufacturer replaced it immediately, within a week. This third hand grinder works perfectly adjusting easily from espresso grind to drip grind for visiting relatives grinding light roast and medium roast Ethiopian beans and Mexico organic. The handle was not rolling to easily but that was fixed with a spray of silicone lubricant and now turn much more easily. I would strongly recommend purchasing. Kinda pricey but works on light roast where my old hand grinder struggled.
Mike –
Cool but not for me
Itâs cool. Grinds are espresso quality although you donât have much variation in that range. Real issue I had was when at the finest setting you are cranking for over a min. Also it be cool if the gears werenât plasticâ¦. A wood v base would make this a statement piece and almost worth the hastel. All the plastic makes the price to high. Prob better off spending more for a flat burr⦠but for what it is Iâd say itâs cool.
Tyson –
Overpriced.Garbage quality.Nice grind though.
Like other reviews. Unstable, lots of plastic, hard to adjust. Produced a nice grind, though. Should have purchased something else.
David Frautschi –
Bear bang for the buck!
I did considerable research on different grinder options for espresso makers on a budget. It wasnât an easy choice for me, since âbeginnerâ espresso grinders are still formidably expensive. I chose this based on the reviews I both read and watched online. While Iâm still learning how to dial in my espresso, I am still very pleased with my purchase. It gives me the quality and the adjustability I have sought.
Mr. Awesome –
Fantastic grind, but with one big problem
I received my ROK grinder in the mail, today. Everything arrived assembled except for the handle. Once I got it set up and began the first grind of 16 grams of beans, I immediately began pulling the grinder off of the counter. It is so light and made the grinder feel like a toy I might break.That said, It was very easy to set for espresso, only took 3 tries from 0 and for me that is exceptional. Grind quality is fantastic at this size. I have not tried it on larger grinds yet. I purchased this as my backup grinder, as my electric one had to be repaired. I would recommend this if you are unable to spend more on a grinder or if you want one that can be used without electricity.
John Boddie –
A first-rate grinder for personal use.
Two days after I recieved the ROK grinder, i got rid of the Rossi commercial grinder I had been using for seven years. I only brew espresso, but I drink six or seven cups on a normal day. I brew single shots, not doubles. It takes under thirty seconds to grind about seven and a half grams of coffee. The grind is perfect, with minimum dust. The ROK is much quieter than my old unit and the slow speed of the grinding does not heat up the grounds prior to loading. If you add a couple of drops of water to the beans before grinding, static is non-existant. I made a plastic cover for the grind chamber, so none of the beans are kicked out while you are turning the crank. My prep area stays much cleaner now.The ROK is well made and looks great on the counter. I need to put my hand on top of it to keep it stable while grinding, but it’s much easier than wrestling with a hand held manual grinder.If I was preparing coffee for multiple people or needed to grind for french press and drip as well as espresso, I’d probably want to have an electric grinder available, but for an individual whose coffee preferences are stable, the ROK grinder merits serious consideration.
Ingo 11 –
Nice design and looking good on the first view – but cheap materials.
The design of the grinder is VERY nice, unfortunately only on the first view.If one looks further, they used cheap plastic, the base looks like cast iron but is from plastic too.The grinder when one is grinding, is VERY unstable.The grinder is not clicking correctly from the first minute on but I have to say that the grinded coffee is very nice.If they charge $50 US for this grinder – that could be a reasonable price tag.
S. quraishi –
Almost perfect
This is the grinder I learned to make espresso on and I can’t see myself ever replacing it with an electric grinder. I only make up to two espressos a day so the additional cost seems like overkill. The quality of grind and flavor is fantastic from the ROK, but it could certainly benefit from a stepless adjustment method. The central drive shaft can make loading beans from the cup a bit weird, and it would have been great to have a dosing cup that fit a portafilter. I think with a V3 they could taper the output to fit a narrower cup and add some kind of agitating mechanism after the burs to sweep the walls for better retention.
john o riordan –
Delighted with my purchase. This hand grinder is everything that I wanted and exactly what I needed. I found it so easy to use and I was able to dial in espresso immediately!I will start by saying that I am biased in that I wanted a hand grinder and I wanted this hand grinder. I have a greater tolerance for any potential “negative” points. I will start with the pros.Pros—Looks fab in the kitchen. Super easy and simple to use. Super easy to clean. Zero fuss to the machine. Zero grind retention. Super easy to adjust, I am sticking with the stepped adjustment and I dialed in my espresso grind immeadiately. In my opinion, I have not sifted the grinds, the grind is consistent. I am hitting my brew time and flow rate repeatedly. I am getting so much more flavour from my beans when compared to my similar priced electric burr grinder, baratza encore. I have never owned an more expensive electric grinder and thus cannot compare. I grind through 36g of in a few minutes, which is about the same time as it takes for my espresso machine to warm up. It is marginally slower than using my baratza encore. I have not used it to grind coarse coffee and I cannot comment on this.Not cons for me—Prior to purchasing, I agonised over some of the cons. Static was the main concern. Retention, somewhat linked to static, was another concern. Popcorning beans was another concern. They turned out to be such non issues. It’s actually funny how little concern I have for these points now that I own the machine.For where I live and the beans that I use, I do not have an issue with static. I have not used the water droplet method as I do not want grinds caking up in the grinder. I simply grind the beans as normal into the grind cup. Then, when I have ground all the beans and before I remove the cup from under the grinder, I lift the cup up slightly and spend up to 10seconds tapping the cup from left to right against the base of the grinder where the grinds exit from. A kind of ding a ling motion and noise if that helps you picture what I do. This gives the static enough time to disperse and knocks any retained grinds from the grinder.I do not have any retention issues. Following on from the previous point, I do not have any static related retention issues. I put 18g in and I get 18g out. I put 36g in and I get 36g out. I am fairly confident in my hario weighing scales accuracy. If I loose anything then it is due to popcorning and usually 0.1 to 0.3 of a gram……but only if I don’t get any bean pieces back into the hopper before finishing my grind.Cons—Popcorning is another non issue for me but it does happen. Therefore it is a con. I grind slowly, I did not buy a hand grinder to grind quickly. I rarely get popcorning. If I do I will loose 2 full beans or a few fragments from a single bean. Normally I just put them back in. It’s not every grind. I am sure that adding more speed would cause more popcorning.The grinder needs two hands to use. I have found that it takes a little getting used to, to know how to hold it so that it doesn’t move about when cranking the handle. I have almost perfected a technique now that minimises effort and increases stability. I like to have the grinder at an almost 45° angle to my body. This allows me to put minimal pressure down with my holding arm at a key crank point while the other hand cranks. For most of the crank rotation I do not need to apply any pressure with my holding arm. This is just a technique for using minimal effort to grind. If I did not do this adjustment then I would use slightly more effort when cranking and the machine might move once or twice while doing a full 36g grind. Again, this is a non issue.Summary—I love it. I really enjoy using it. It has greatly improved my espresso. I cannot find an issue with the negative points that others raised. It is so much better than my baratza encore for making espresso. It is better than the other hand grinders that I have tried. If you really want a hand grinder and you feel this is the one for you, then I would say buy it 🙂
Philippe Lépine –
Excellent moulin à café avec une mouture très fine, en revanche, on en met partout, le système de récupération est à améliorer. Dommage sinon il aurait été parfait !
isaac –
Si sabes algo mas de cafe, te darias cuenta que este molino no vale mucho. La base empieza a resbalar despues de dos meses y se me rompio uno de los engranajes a los 6.Antes recomiendo otro molino.
Peter R. –
Nach langem Studium verschiedener Empfehlungen und Kritiken habe ich mich für Risiko entschieden und diese noch nicht bewertete, mit 177⬠relativ teure Handmühle gekauft.Leider ist die schwarze Bodenplatte nicht wie zu vermuten aus Aludruckguss, sondern aus schnöder Plastik. Ebenso wie die unter der abnehmbaren (Plastik)Abdeckung befindlichen Kegelräder des Antriebs. Na gut, wenn das Material auf Langlebigkeit ausgelegt ist, soll es mir recht sein. Auf der Unterseite sind zwei Antirutschstreifen, die gut funktionieren (eventuell muà man mal ein paar daran haften gebliebene Kaffee- oder Zuckerkrümel, die daneben gefallen sind, abwischen).Der Mahlgrad ist nicht einfach einzustellen, auf den Fotos sieht man das nicht vollständig entgratete Einstellrad und ein paar Kratzer daran. Da das Rad besonders im Bereich “fein” recht straff geht, empfehle ich ein Küchentuch zu benutzen. Eine Anzeige des Mahlgrades gibt es nicht, es nutzt auch nichts, mit dem Edding Markierungen zu machen, da das Rad sich beim Kurbeln mitdreht. Daher habe ich mir eine Mahlgradanzeige mit Blechstreifen, Klebeziffern und einem Magneten gebaut, der über der jeweils eingestellten Zahl, im Foto die 8 steht.Um ein System zu finden, habe ich das Rad im Uhrzeigersinn soweit “zu”gedreht, bis es fest war, dann drehte sich auch die Kurbel nicht mehr und ab dieser “Nullstellung” zähle ich beim Drehen gegen den Uhrzeigersinn die Rasten. 1 = feinster Mahlgrad für Räuberkaffee, 8 nehme ich für Filterkaffee. Vielleicht nicht wirklich hausfrauentauglich, mir macht das aber SpaÃ.Auch lustig, daà man dem Mahlwerk zuschauen kann, aber leider spritzen Kaffeebohnenstückchen immer wieder heraus, daher hab ich mir aus 2mm dickem Silikon eine Abdeckung gebaut. Bin noch auf der Suche nach glasklarem Silikon.Für 32-35g Kaffeebohnen (viel mehr paÃt in das Mahlwerk und in den Auffangbecher darunter im Betrieb auch nicht hinein) benötige ich ca. 110-130 Umdrehungen an der Kurbel. Die Zahl der Umdrehungen ist seltsamerweise scheinbar unabhängig vom Mahlgrad. In Stufe 1 ist es natürlich etwas schwergängiger, aber durch die Hebellänge und die ergonomisch natürliche Drehbewegung senkrecht geht das Mahlen relativ leicht.Die Mühle behalte ich! Wie schon gesagt, ich hab Spaà dran und ich freue mich schon auf den nächsten Kaffee!
wayne –
Easy to use, could do with numbered positions, but once you dial it in you kinda leave it, till the next time you need to dial in.A little rough first couple of uses, and then spins more freely