K-Max vs. J-Max

What is the difference between K-Max and J-Max?

Customer A

Are K-Max and J-Max shared the same magnetic catch-cup?

Customer B

Why is that the adjustment design of K-Max and J-Max are dissimilar design but shared the same name of the external adjustment? 

Customer C

Both K-Max and J-Max grinders are overall grinders that could brew for several methods.

The Stainless steel burr design aka K burr of K-Max grinder and the Titanium-coated burr design of J-Max grinder is different.

The adjustment design of K-Max and J-Max grinder is the External adjustment.
The adjustment mechanism of K-Max grinder is the same aligned with K-Pro & K-Plus grinder as 90 clicks per rotation, 10 clicks per number, 22 microns per click.
On the other hand, J-Max grinder employs the new adjustment mechanism as 90 clicks per rotation, 10 clicks per number, 8.8 microns per click.

The Magnetic catch-cup of K-Max and J-Max grinder allows you to remove it in a flash with the capacity of 35~40g.

K-Max grinder is considered the overall grinder and J-Max grinder is ideal for espresso brewing.
J-Max grinder produces more fine particles compared to K-Max grinder.

The Cylinder case is pairing with K-Max and J-Max grinder.


使用説明書 – J シリーズ

1Zpresso – J シリーズ 手挽きコーヒーミル

J-series grinder
J-series grinder

使用ガイド

J-series grinder
  1. 内部調整式のミルを最も締め込んだ状態から粒度調節し始めます。
  2. まずハンドルを押さえて軸を固定する。
  3. ネジを最も締めこんだ状態を原点として、そこからクリック数を数えていきます。
    注:原点は0ではない場合があります。
  4. 原点から反時計回りにまた原点まで回したら、一週ということです。
  5. 1週で10数字・30クリックがあり、内刃が0.75mm下がります。一つの数字は0.075mmで、一つのクリックは0.025mmです。
  6. 使用時間・分解回数・軸のネジ・残った粉により、原点が異なる場合があります。
  7. 様々な淹れ方については、挽き目設定のガイドを参照してください。
  8. コーヒー豆を入れて、時計回りにハンドルを回します。
Q2 Grinder - Pentagonal Version

分解手順

注意:手順2まで外刃を緩めないでください。

J-Series grinder
  • ハンドルを押さえしながら、反時計回りにネジを外す。
J-Series grinder
  • ネジ・ダイヤル・バネ・下ベアリング蓋を外す。
J-Series grinder
  • 外刃を時計回りに回します(逆ねじ)。
  • ミルを水洗しないでください。ブラシとブロワーで掃除するこはお勧めです。

組立手順

J-Series grinder
  • 外刃を最もきつくするように反時計回りに締めます(逆ねじ)。
J-Series grinder
  • 部品を正しい順で戻します。 下ベアリング蓋(凸起のある方が上)、バネ、内刃、ダイヤル。
J-Series grinder
  • ハンドルを押さえしながら、時計回りにネジを締めます。

警告:

以下の部品は工具で調整されているため、これ以上分解しないでください。

J-series grinder
J-series grinder
J-series grinder

外刃

ベアリング

注意事項

  1. 水洗い不可。
  2. 分解できる部分を水とアルコール以外の溶剤で拭かないでください。
  3. 乾燥した環境に保存したら耐用年数を延ばします。
  4. 説明書にそって組み立て、部品を正しい位置に配置してください。
  5. 安全の為、6歳未満の子供は使用禁止。

使用説明書 – J-Max

1Zpresso – J-Max 手挽きコーヒーミル

J-Max grinder
J-Max grinder

使用ガイド

J-Max grinder

挽き目調整

  1. ミルは箱から出してすぐに使用できます。 ハンドルが大きく動かない原点まで、ダイヤルを反時計回りに回します。 #0は挽き目マークと合わせ、ダイヤルの下端が挽き目マークの上端に接触します。
    jmax-coffee-grinder
  2. ピラミッド型の挽き目マークは、周数を示す複数の正方形で構成されており、粗い設定を行うと小さくなります。
  3. 合計で4周半があり、1周で9 0クリックがあります。クリックずつ、内刃が8 . 8ミクロン移動します。
  4. 挽き目設定は下記を参照してダイヤルを時計回りに調節してください。

    • トルココーヒー : 70 クリック
    • エスプレッソ:120 クリック
    • エアロプレス・モカポット・ドリップコーヒー:190 クリック
    • ポアオーバー・サイフォン:270 クリック
    • フレンチプレス:360 クリック

      様々な淹れ方についた挽き目設定はガイドを参照してください。

  5. 握りやすくなるため、ゴムバンドをミルに取り付けることをお勧めします。

    J-Max grinder


  6. コーヒー豆をホッパーに入れ、ハンドルを時計回りに回して挽きます。
  7. ミルを分解および再組み立てした後は、説明に従ってゼロ点調整してください。

分解手順

警告: 手順3まで外刃を緩めないでください。

J-Max grinder
  • 挽き目ダイヤルを時計回りに約2周緩め、刃を押さえながら、ネジを反時計回りに取り外します。
  • 上ベアリング蓋と上ベアリングを外します。
J-Max manual coffee grinder
  • 内刃と軸、バネと下ベアリング蓋を外します。
  • 外刃を前に回します(逆ねじ)。挽き目ダイヤルの分解はお勧めしません。
  • ミルを水洗しないでください。 ブラシとブロワーで掃除することをお勧めします。

組立手順

J-Max grinder
  • 外刃を最もきつくするように後ろに向けます(逆ねじ)。
J-Max grinder
  • 外刃を反時計回り回して、ゼロの下端を挽き目マークの上端に合わせます。
J-Max grinder
  • 部品を正しい順で戻します。 下ベアリング蓋(突起がある方が上)、バネ、軸と内刃。
J-Max grinder
  • 上から上ベアリングを入れます。
  • 上ベアリング蓋を戻します(ドットのついた方が上)。
J-Max grinder
  • 刃を押さえながら、ネジを時計回りに締めます。それでゼロ点調整完了。

警告

以下の部品は工具で調整されているため、これ以上分解しないでください。

J-Max grinder

内刃と軸

J-Max grinder

外刃

J-Max grinder

ベアリング

注意事項

  • 水洗しないでください。
  • 分解できる部分を水とアルコール以外の溶剤で拭かないでください。
  • 乾燥した環境に保存したら耐用年数を延ばします。
  • 説明書にて組み立て、部品を正しい位置に配置してください。安全の為、6歳未満の子供は使用禁止。
J-Max grinder
  • ノブが傷つかないため、上の写真のような置き方をお勧めします。

J-Max vs. JX-Pro

Is J-Max and JX-Pro grinder shared the same burr design? But the difference in burr set is that the coating burr with J-Max grinder.

Customer A

Is the espresso grinder – J-Max grinder can also brew for pour-over?

Customer B

Both J-Max and JX-Pro grinders are overall grinders that could brew for several methods.

The Titanium-coated burr design of J-Max and the Stainless-steel burr design of JX-Pro grinders are different
The adjustment design of J-Max grinder is the External adjustment as 90 clicks per rotation, 10 clicks per number, 8.8 microns per click whereas there is the Top adjustment design of JX-Pro grinder is 40 clicks per rotation, 4 clicks per number, 12.5 microns per click.  

The Magnetic catch-cup of J-Max grinder allows you to remove it in a flash with the capacity of 35~40g.
The capacity of the Classic catch-cup design with JX-Pro grinder is 30~35g.

Both grinders are the overall grinders for several brew methods and are ideal for espresso brewing,
J-Max grinder allows more minor clicks to explore the sweet spot of the espresso compare to JX-Pro grinder.
J-Max grinder produces more fine particles compared to JX-Pro grinder.

J-Max: 0.0088mm < JX-Pro: 0.0125mm

The Cylinder case is pairing with J-Max grinder.
The Cylinder case or the Travel case of JX-Pro grinder could be select with extra bucks.


Q2 vs. JX

Why is that both Q2 grinder and JX grinder specified lists as pour-over?

Customer A

Is Q2 and JX grinder is the right grinder for me? My brew methods are Aeropress, Siphon and French press.

Customer B

Q2 and JX grinders are made for pour-over and it suits the brew methods like Pour-over, Aeropress, Siphon, Moka-pot, drip coffee and French press.

In short, the burr designs of Q2 and JX grinders are different.
However, it shared the same Internal adjustment design as 30 clicks per rotation, 3 clicks per number and 25 microns per click.
The capacity of the Classic catch-cup design with Q2 grinder is 15~20g whereas JX grinder is 30~35g.

Q2 grinder is considered a lightweight grinder for the coffee user who enjoys outdoor activities like camping.
JX grinder produces fewer fine particles compared to Q2 grinder.

Both Q2 and JX grinders could be pairing with the Cylinder case or the Travel case.
Both weighted less than a kg that could be a great essential for your travel companion and you.


JX-Pro vs. K-Pro vs. K-Plus

Pardon, I was intriguing about the difference between JX-Pro and K-series grinder (K-Pro & K-Plus grinder).

Customer A

Why is it that JX-Pro & K-Pro & K-Plus grinders are listed as overall grinders that could do espresso pour-over?

Customer B

The burr design and the adjustment design of JX-Pro and K-series grinder (K-Pro & K-Plus grinder) are different, even it is the same burr size of 48mm and the same stainless steel burr materials.

The Top adjustment design of JX-Pro grinder is 40 clicks per rotation, 40 clicks per number and 12.5 microns per click.
The External adjustment design of K-series grinders is 90 clicks per rotation, 10 clicks per number and 22 microns per click where you could set the desired grind setting freely.
K-series grinder produces even consistent grinding results and generates fewer fine particles.

The capacity of the Classic catch-cup design with JX-Pro and K-Pro grinders is 30~35g.
The Magnetic catch-cup of K-Plus grinder allows you to remove it in a flash with the capacity of 35~40g.
And the bottom of the catch-cup is changeable to a more espresso-friendly feature to fits the 1Zpresso Coffee Maker Stainless Steel Powder Container and the 51/58mm Baskets.

The Cylinder case is pairing with K-Pro grinder.
The Travel case is pairing with K-Plus grinder.
The Cylinder case or the Travel case of JX-Pro grinder could be select with extra bucks.
It is an ideal gift for friends and family.

Find the post below for further details on K-series grinders (K-Pro & K-Plus grinder).

K-Pro vs. K-Plus

What is the difference between K-Pro and K-Plus grinder?

Customer A

What are the extra feature that K-Plus have and K-Pro grinder doesn’t?

Customer B

Why is “Plus” worth more few extra bucks than “Pro”?

Customer C

The burr design and the adjustment design of K-Pro and K-Plus grinder are the same, ipso facto, so as the grinding result.

The burr design is the 48mm stainless steel burr.
The External adjustment design of K-series grinders is 90 clicks per rotation, 10 clicks per number and 22 microns per click.
It is considered an overall grinder – K-Pro nor K-Plus grinder and it could brew several methods.

The main difference is K-Plus grinder came with a Magnetic catch-cup (35~40g), which allows you to remove it in a flash.
And the bottom of the catch-cup is changeable to a more espresso-friendly feature to fits the 1Zpresso Coffee Maker Stainless Steel Powder Container and the 51/58mm Baskets.
On the other hand, the capacity of the Classic catch-cup design with K-Pro grinder is 30~35g.

The Cylinder case is pairing with K-Pro grinder.
The Travel case is pairing with K-Plus grinder.


JX vs. JX-Pro

Why is that JX grinder only marked pour-over?
But why is that JX-Pro grinder is able to brew several methods?

Customer A

Why is the price difference between JX and JX-Pro grinder?

Customer B

Is “Pro” worth more few extra bucks? If yes, why?

Customer also B

Let’s break it down individually.

Both JX grinder and JX-Pro grinder shared the same burr design, the grinding result shall be similar. 
However, the dissimilarity between these grinders is the adjustment design.

There is Top adjustment design of JX-Pro and the advantage of the adjustment is gives more click (40 > 30) as compared to the Internal adjustment design of JX grinder.

Total of 40 clicks per rotation, 4 clicks per number and 12.5 microns per click of JX-Pro grinder whereas 30 clicks per rotation, 3 clicks per number and 25 microns per click of JX grinder.

You could tell with the adjustment design of JX-Pro grinder allow you to dial in more and minor clicks for several brew methods, especially espresso.

JX grinder and JX-Pro grinder lying with the cups
Adjusting the internal adjustment design of JX grinder
JX Grinder with the burr set
JX-Pro Grinder with the burr set
Adjusting the top adjustment design of JX-Pro grinder

Guy open the magnetic catch-cup of J-Max grinder

User Manual – J-Max

1Zpresso – J-Max Grinder

J-Max manual coffee grinder
J-Max manual coffee grinder
J-Max grinder

User Instructions

J-Max manual coffee grinder

Adjustment

  1. The grinder is ready to use out of the box. Turn the adjustment dial ring counter-clockwise all the way to the starting point where the resistance starts and the crank handle can’t spin freely. The #0 will be aligned with the scale mark and the bottom edge of the adjustment dial ring will touch the first tier of the scale mark.
    jmax-coffee-grinder
  2. The pyramid-shaped scale mark consists of multiple squares that indicate how many rotations you are at, and it gets smaller while you set coarser settings.
  3. There are four and a half rotations in total. 90 clicks in a single rotation and each click moves the burr by 0.0088mm/8.8 microns.
  4. Turn the adjustment dial ring clockwise to find the grind setting:

    • Turkish Coffee – 70 clicks
    • Espresso – 120 clicks
    • Aeropress / Moka-pot – 190 clicks
    • Pour-over – 270 clicks
    • French press – 360 clicks

      Refer to the grind setting tutorial post for different brewing methods.

  5. Attach the rubber band to the grinder for a better grip.

    J-Max grinder


  6. Put coffee beans in the hopper and turn the handle clockwise to start grinding.
  7. Follow the guide to calibrate the grinder after disassembling and reassembling the grinder.

Disassembly

Warning: Do not loosen the burr ring unit before step 3.

J-Max manual coffee grinder
  • Turn the adjustment dial ring clockwise by around two rotations and remove the knurled thumb nut counter-clockwise while pressing the burr.
J-Max manual coffee grinder
  • Remove the upper bearing cap and upper bearing.
J-Max manual coffee grinder
  • Remove the burr and central shaft, spring and lower bearing cap.
J-Max manual coffee grinder
  • Turn the burr ring unit forward (reverse threads). Disassembling the adjustment dial ring is not suggested.
  • Do not clean the grinder with water. Cleaning with a brush and blower is recommended.

Assembly & Calibration

J-Max manual coffee grinder
  • Turn the burr ring unit backward (reverse threads) to the tightest position.
J-Max manual coffee grinder

  • Align the #0 with the scale mark and the bottom edge of the adjustment dial ring touches the first tier of the scale mark.
J-Max manual coffee grinder
  • Put the components back in the right sequence: lower bearing cap (the raised edge side facing upward), spring, shaft and burr.
J-Max manual coffee grinder
  • Put the upper bearing back from the top.
  • While pressing the burr from the bottom, put the upper bearing cap back. The side with concave dots faces upward, and the U-shaped hole fits the shaft properly.
J-Max manual coffee grinder
  • Tighten the knurled thumb nut to calibrate the grinder while pressing the burr from the bottom.

    Note: There are four and a half rotations in total counted from the starting point. The starting point might be different within ±10 clicks due to the strength you tighten the nut and dial.

Warning

Do not disassemble the following components any further:

J-Max manual coffee grinder

The Burr and Central Shaft

J-Max manual coffee grinder

Burr Ring Unit

J-Max manual coffee grinder

Bearings

Precautions

  • Do not clean and wash the grinder with water.
  • Do not wipe your grinder with solvents other than water and alcohol.
  • Keep the grinder in a dry environment in order to extend its lifetime.
  • Follow the instructions of re-assembly, ensure to place the components into the correct positions.
  • Keep the grinder away from children for safety concerns.
  • To prevent the knob from being damaged, putting the grinder and the handle in the case as below picture is suggested.
J-Max manual coffee grinder

J-Max grinder lying to the table

How to Use 1Zpresso Bands on your Manual Coffee Grinder?

1Zpresso Bands Tutorials

1Zpresso rubber bands are designed to attach to the grinder for better hand grips so the grinder won’t slip out your hands when grinding the coffee beans.

Before Installation

The grinder needs disassembling before you install the bands.

Where to install the 1Zpresso bands?

The ideal location would be the top or middle body of the grinder where most of the users would grab during grinding coffee beans.

The diameter of the JE-Plus grinder is considerably large for some users.
Attaching the band on the grinder would resolve this issue.

I must admit that we were amazed by the creativity of the customer.
For instance, putting the bands onto the catch-cup to reduce damages in case that the catch-cup falls on the floor.

Do send us an image via the social platforms (Facebook, Instagram, Email) to share what do you think of the most creative and effective way.

The 1Zpresso bands attaching J-Max grinder
J-Max grinder

J-Max grinder with the 1Zpresso bands lying on the table
J-Max grinder