Manual grinders have increasingly blurred the line between portable coffee gear and genuinely high-performance grinders. With the new TIMEMORE Chestnut S5 Pro, TIMEMORE is leaning firmly toward the premium end of that spectrum, combining a relatively slim body with a large 48mm burr set, precise external adjustment, and an all-metal internal construction.
The basic idea behind the S5 Pro is straightforward: TIMEMORE wanted the speed and consistency of a larger-burr grinder without creating something bulky or uncomfortable to use. The result is a grinder built around 48mm burrs inside a body measuring just 56mm across.
Compared with TIMEMORE’s more value-oriented manual grinders, the S5 Pro is clearly designed as a more premium option. Let’s take a closer look at what makes it different.
Features of the Timemore Chestnut S5 Pro Manual Grinder
48mm TriB-048-I Burr Set
The centerpiece of the S5 Pro is its new 48mm TriB-048-I conical burr set. Rather than relying on a single cutting geometry, TIMEMORE designed the burr to combine three actions: compression, shearing, and piercing. Beans are partially broken apart before reaching the burr’s primary cutting geometry.
The 12-point design alternates larger seating teeth with smaller piercing teeth. According to TIMEMORE, this reduces bean-on-bean collisions that can create uncontrolled fines. It’s an interesting approach because instead of simply making the burr larger, TIMEMORE has put significant emphasis on controlling how beans enter and move through the burr.
Redesigned External Grind Adjustment
The S5 Pro features an entirely redesigned external adjustment system with 90 tactile steps, each spaced 15 microns apart.
Having the adjustment at the top of the grinder makes it easy to see your setting and quickly make changes without removing the catch cup. More importantly, the relatively small 15-micron increments provide a considerable amount of control when dialing in a coffee.
Improved User Experience and Ergonomics
Several smaller changes are focused purely on making the grinder easier to use. At the top, a wider inlet with a slight incline helps guide beans into the grinder while reducing the chance of beans bouncing or spilling out while dosing.
The crank knob has also been significantly enlarged compared with the S3. It’s 63% wider and 82% larger by volume than previous versions, giving your hand a fuller grip and providing additional leverage while grinding.
Tight Bearing Tolerances
TIMEMORE has also paid considerable attention to burr stability. The S5 Pro uses custom bearings manufactured to a 5-micron tolerance, designed to remain stable while the grinder is under load. At its finest setting, TIMEMORE lists the burr gap at just 75 microns.
That internal precision is an important complement to the grinder’s fine external adjustment—you want the burrs themselves to remain stable as you move through those small grind-setting increments.
30g Capacity
The S5 Pro has a 30g capacity, which is enough for most single-cup recipes and even larger two-person pour-over brews.
Compact and Travel-Friendly
Perhaps one of the more impressive aspects of the S5 Pro is fitting its 48mm burrs into a body that’s only 56mm wide. The grinder measures 180mm tall and weighs 798g, while its 185mm handle folds against the body when not in use.
It’s certainly heavier than an ultralight travel grinder, but the relatively narrow body and folding handle help maintain the portability you’d expect from a manual grinder.
The S5 Pro is available in Obsidian Black or Hunter Green, with both finishes maintaining the grinder’s clean, understated aesthetic. The Hunter Green in particular is a nice departure from the mostly black and silver finishes you typically see across premium hand grinders.
All-Metal Internals
The S5 Pro uses stainless steel and aluminum throughout its internal construction rather than relying heavily on plastic components. The overall grinder combines aluminum alloy, 304 stainless steel, and silicone, with a total weight of 798 grams.
What’s in the Box
The unboxing experience is minimal and straightforward. Inside, you’ll find:
- TIMEMORE Chestnut S5 Pro grinder (Hunter Green or Black)
- Integrated foldable handle
- Cleaning brush
What I Love About the Timemore Chestnut S5 Pro Manual Grinder
- 48mm Burrs in a Slim Body: This is probably the defining feature of the grinder. A 48mm burr set is substantial for a hand grinder, yet TIMEMORE has managed to fit it into a body only 56mm across. That helps provide the benefits of a larger burr without making the grinder bulky and awkward to hold.
- External Adjustment: The 90-setting external dial is a major usability win. Being able to make precise 15-micron adjustments without removing the catch cup makes switching settings much more convenient.
- Attention to Burr Design: The TriB-048-I is more interesting than simply putting a larger version of an existing burr into the grinder. TIMEMORE has specifically redesigned how beans are pierced, compressed, sheared, and ultimately cut, with the goal of limiting uncontrolled fines.
- Build Quality: All-metal internals, tight bearing tolerances, and an aluminum-and-stainless-steel construction make the S5 Pro durable and incredibly high-quality.
- Small Workflow Improvements: The larger inlet, enlarged crank knob, folding handle, and 30g capacity aren’t revolutionary individually, but together they make the S5 Pro feel like a grinder designed around actual daily use.
What Is Lacking in the Timemore Chestnut S5 Pro Manual Grinder
- Weight: At 798g, the S5 Pro isn’t especially light. The folding handle and slim 56mm body make it compact, but travelers prioritizing minimum weight may prefer a lighter grinder.
- Price: The S-series grinders sit in the premium category, so as a result the cost if more expensive than many other hand grinders in the space. The value and features you get justify the price point in my opinion, but it may be out of budget for many consumers.
Grind Sizes and Adjustments
| S5 Pro | |
|---|---|
| Use | Ideal for everything from espresso to pour-over to french press |
| Rotations | 1 rotation covers all settings |
| Adjustment Size | 0.015mm per click |
| Settings Per Rotation | 90 settings per rotation |
Recommended Grind Sizes for Different Brew Methods
Based on manufacturer guidance and practical use, these are suggested starting points:
| Brew Method | Suggested Click Range |
|---|---|
| Espresso | 0.0 – 2.0 (0 – 20 clicks) |
| Moka Pot | 1.0 – 3.0 (10 – 30 clicks) |
| Pour-Over | 5.0 – 8.0 (50 – 80 clicks) |
| French Press | 8.0 – 9.0 (80 – 90 clicks) |
As always, these settings serve as a starting point. Roast level, dose, and personal preference will influence where you ultimately land.
Overall Thoughts
The TIMEMORE Chestnut S5 Pro is a significant step up for TIMEMORE’s manual grinder lineup. The 48mm TriB-048-I burr set is the standout, combining a larger burr platform with a carefully designed pre-break geometry aimed at controlling fines and improving grind consistency. Pair that with the tight bearing tolerances and 15-micron external adjustment, and the S5 Pro has the precision and control I’d expect from a premium hand grinder.
What I like most, though, is that TIMEMORE hasn’t sacrificed usability to get there. The slim body, larger crank knob, wider inlet, 30g capacity, and foldable handle make it comfortable and practical for everyday brewing. This feels like a grinder designed for someone who wants high-end grind performance but still values the simplicity and portability of a manual grinder—and it’s easily one of the most complete hand grinders TIMEMORE has produced.
Who Should Buy the Timemore Chestnut S5 Pro Manual Grinder
The S5 Pro is a great fit for:
- Specialty coffee enthusiasts looking for a premium manual grinder with a focus on grind consistency, precision, and build quality.
- Pour-over and filter coffee brewers who want the performance of a larger 48mm burr set while maintaining a relatively slim, compact grinder.
- Brewers who regularly switch coffees or recipes and will appreciate the convenience and repeatability of the 90-step external adjustment system.
- Anyone upgrading from an entry-level hand grinder who wants better materials, tighter tolerances, a larger burr set, and a more refined overall experience.
- Brewers who value portability without sacrificing performance, thanks to the 56mm-wide body, foldable handle, and practical 30g capacity.
If you’re simply looking for an inexpensive grinder that can make a good cup of coffee, the S5 Pro is likely more grinder than you need. But if you care about grind quality, appreciate premium construction, and want a manual grinder you won’t quickly outgrow, the S5 Pro makes a compelling case.
Conclusion
The TIMEMORE Chestnut S5 Pro takes what TIMEMORE has done well with its manual grinders and pushes it into a decidedly more premium package. The 48mm TriB-048-I burrs, 90-step external adjustment, all-metal construction, and tightly controlled internal tolerances provide the performance-focused foundation, while details like the wider inlet, larger crank knob, 30g capacity, and folding handle make it genuinely enjoyable to use.
More importantly, the S5 Pro feels cohesive. None of its individual features seem added simply to make the spec sheet longer; they work together to create a grinder that is precise, substantial, and still practical for everyday brewing. For someone looking to invest in a high-end manual grinder, the S5 Pro is one of the strongest options in TIMEMORE’s lineup and a grinder that should comfortably serve as a primary grinder rather than simply a portable backup.
