Currently unavailable.
We don't know when or if this item will be back in stock.
Have one to sell?

ROK Coffee Grinder, Aluminum

4.3 out of 5 stars 102 ratings

Currently unavailable.

We don't know when or if this item will be back in stock.
Material Aluminum
Colour Aluminum
Brand ROK
Item dimensions L x W x H 21 x 17.3 x 28 centimeters

About this item

  • Switch between stepped or step less grinding with an easily removable set of washers
  • Grind consistency and stability on par with electric grinders
  • Quieter grinding than electric coffee grinders
  • Non-slip ring prevents sliding or wobbling while grinding
  • Easy to adjust for left-handed use

Product information

Technical Details

Additional Information


Would you like to tell us about a lower price?

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question might be answered by sellers, manufacturers, or customers who bought this product.

Please make sure that you've entered a valid question. You can edit your question or post anyway.

Please enter a question.

Product description

Made possible by a dedicated community of fundraisers on Indiegogo, the ROK Coffee Grinder is a manual burr coffee grinder that is suitable for all forms of coffee brewing. Made from durable die-cast aluminum, this grinder uses a set of 48mm stainless steel conical burrs to produce grounds on par with more expensive electric grinders. Unlike other manual grinders, the ROK Coffee Grinder grinds beans with minimal effort, require a mere 62 revolutions (30 seconds of grinding time) to produce a double shot of espresso. Longevity of the grinder is ensured by the quality engineering grade components used in its construction. Each grinder ships with an included grounds cup that can be used for measuring beans and catching coffee while grinding.

Customer Questions & Answers

Customer reviews

4.3 out of 5 stars
4.3 out of 5
102 global ratings
How are ratings calculated?

Top review from Canada

Reviewed in Canada on December 4, 2017
Verified Purchase

Top reviews from other countries

Edgar villalobos
5.0 out of 5 stars Excelente
Reviewed in Mexico on October 5, 2019
Verified Purchase
5.0 out of 5 stars 使ってます。とてもいいですよ!
Reviewed in Japan on October 14, 2016
Verified Purchase
2.0 out of 5 stars Great Design - mediocre material quality, too many functional flaws.
Reviewed in the United States on March 16, 2017
Verified Purchase
243 people found this helpful
Report abuse
Kousou Otsuki
3.0 out of 5 stars Awesome!!!! -> well.......not bad....after one year of review...
Reviewed in the United States on May 10, 2017
Verified Purchase
Customer image
3.0 out of 5 stars Awesome!!!! -> well.......not bad....after one year of review...
Reviewed in the United States on May 10, 2017
I just got it today. So i did test grinding at my office.
Grinding consistancy seems really good at this time. i will see how it holds. Manual says level 1-10 is for espresso, and it seems true. I ran it with grining level 9 and it just looks like maximum size for espresso. At This size you definitely need pressurized portafilter. Any way it is still for espresso size that is way too small for drip or any other type of brewing so, true!
Statics: not a problem here. Today is 72 F and shiny and breezy. 6mph wind 32% humidity. I started grinding right out of the box without any cleaning to see how it handles statics. I just wiped aluminium cup with wet towel, that is it, I did not clean the grinder at all. Result is what you see in the picture. I will say it is low level. I did this in my office. Even aluminium ground cup has very little statics that I did not have any problem pouring the ground into another cup nicely and neatly. And aluminium cup is coated which I did not expect. Very nice touch. Cup feel like ceramic coated although I dont know what kind of material ROK used, I just hope it will last long.
Bottom pad is super super super sticky. You can use only one hand. I thought it was glued to the surface :-)
Sturdyness is the most atteactive part of this product.
It makes pleasant low grinding noise.
Grinding speed is awesome for the manual grinder. Twice faster than Hario.
I made gound for three cups of coffee now and it was effortless.
I removed infinite level washers and it made nice clicks.

Tip. Do not change grinding levels in the middle of grinding.

So far so good!!!!
I wil update if there is any issues arise.
Update 5/19 2017
So far so good. I found changing grinding level with stepping is hard. So I put the washers back because I had to frequently change the level and it was not good. Consistancy still the with washers. Level Wheel stayed the same position after grinding 12oz of coffee bean and until today. I use about 35oz whole bean everyweek. It started to make squeeky sound. I found sound is from the plastic roller part on the handle so not a big deal.
Sticky pad became little sticky after 2weeks of use. But don't worry washing the sticky pad will bring that super stickyness back!!
Cleaning the burr is little tricky because of limited reach.
Broken coffee beans pop out when there is about 6oz beans left. But i cover it with hand and I think it as signature thing of this manual grinder.
Will update if I find anything major.

—after 3rd a year)----now reduced to 3 stars...

I bought my third one to use at the office....this one is like my first one....burr is not aligned in the perpendicular to the is not a shaft...if shaft is off center to one point burr touches the outer butt with consist noise which is really big problem...but the inner burr touches outer burr at a specific degree, mine, 9 o'clock. maybe inner burr is not held straight or what? or it could be the outer burr too...I don't know I work in the industrial design field and I can not get this straight. and I do not want to try whole-make-over on this machine...I can but I do not want to....somehow my second one was almost perfect when it comes to alignment. BUT still a lot better than most sub$200 grinders, but it seems like it is your luck. coffee taste definitely different from my second grinder. I lose significant control over targeted particle size... I have micron mesh filters and the first one and second one definitely drop more fine particles than the second one.
Images in this review
Customer image Customer image Customer image Customer image Customer image
Customer imageCustomer imageCustomer imageCustomer imageCustomer image
20 people found this helpful
Report abuse
Sean Marcellus
5.0 out of 5 stars Excellent Grinder, can't beat it for under $600.
Reviewed in the United States on August 7, 2016
Verified Purchase
18 people found this helpful
Report abuse