Comandante C40 MK4 Hand Grinder
- Capacity: 0.09 pounds
- Item Weight: 0.5 pounds
- Material Type: Stainless Steel
- Color: Black
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A precision manual hand grinder with a hardened steel burr set and a redesigned fill mechanism, built for consistent single-dose grinding.
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ASIN: B07JQ4P976Model: C40 MK4Category: Manual Coffee Grinders
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Overview
The Comandante C40 MK4 is a manual coffee grinder built around a high nitrogen martensitic stainless steel burr set hardened to roughly 58 Rockwell, paired with a redesigned internal axle for smoother filling.
Comandante is a known name in manual grinders, and the MK4 revision focuses on the fill mechanism rather than the burr itself: a redesigned tri-fan axle support is meant to make loading beans simpler. It ships with two catch jars, a brown glass jar and a clear polymer-glass jar, each holding about 40 grams of ground coffee.
- High nitrogen martensitic steel burrs, ~58 Rockwell hardness
- Redesigned tri-fan axle for easier filling
- Two ~40g catch jars, glass and polymer-glass
- Double-mounted stainless ball-bearing axle
Who it's for
Fits a pour-over or espresso-at-home enthusiast who wants a precise, durable manual grinder and does not mind hand-cranking each dose. Not for someone who wants electric, high-volume grinding for multiple people at once.
Pros and cons
- Hardened stainless steel burrs for consistent grind
- Double-mounted ball-bearing axle reduces wobble
- Two ~40g catch jars included
- Removable oak handle knob for storage
- Manual grinding only, no electric option
- Single-dose capacity limits multi-cup brewing
Performance notes
The burr set is made from high nitrogen martensitic stainless steel hardened to about 58 Rockwell, with individually sharpened Z-shaped cutting edges the maker says produce a homogeneous grind at roughly one bean per turn. The axle rides on a double-mounted, stainless steel ball bearing setup for reduced wobble, and the oak handle knob is removable for storage.
Specifications
| Brand | Comandante |
|---|---|
| Model | C40 MK4 |
| Dimensions & fit | |
| Item Weight | 0.5 pounds |
| Item Dimensions L x W x H | 2 × 2 × 5.5 inches |
| Capacity & performance | |
| Capacity | 0.09 pounds |
| Construction & materials | |
| Material Type | Stainless Steel |
| Color | Black |
| Included components | |
| Included Components | Coffee Grainder |
| Other details | |
| Number of Items | 1 |
| Specific Uses For Product | Coffee Grinder |
| Item Type Name | Comandante C40 MK3 Nitro Blade Black |
Closest rivals on specs
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1Zpresso J-Ultra Manual Coffee Grinder- Item Weight 0.5 vs 0.09 pounds (+456%)
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Frequently asked questions
What jars come with the Comandante C40 MK4?
A brown glass jar and a clear polymer-glass jar, each holding about 40 grams of ground coffee.
What is different about the MK4 version?
A redesigned internal tri-fan axle support that the maker says makes filling the grinder simpler.
Is this an electric grinder?
No, it is a manual hand grinder operated by turning the handle.