Two machines. One board apart.
Not the housing. Not the motor. Not the cutter disc.
Same mechanical structure, split into two machines: the Semi-Automatic Dough Divider & Rounder (Vertical) and the Smart Dough Divider & Rounder (Vertical).
Open the side cover on that old machine in your workshop: a bundle of wires — harnesses, wire lugs, zip ties tangled together. One jolt in transit and a terminal works loose. One humid season and it oxidizes. One breakdown and you call an electrician. And he may not come today — so your line is stuck on someone else's schedule.
The first thing we did on our own two machines (BK-Smart and BK-Ultra) was turn that bundle into a board: fewer wires, plug-in connectors instead of lugs, and when something really fails you do not trace wires or solder anything — you swap the whole board and you are back in minutes.
But the board is only the foundation. What really separates these two machines is how far that board takes over.
A machine's character is written by its control method long before you buy it.
On the old machine, the timing does not live in the machine. It lives in someone's hands.
How long do you round? A veteran reads the color and the feel. A rookie counts seconds. Count too fast and the dough never comes round. Count too slow and the surface tears. Same machine, two operators, two different products.
The lift? You flick a lever, or step on a pedal.
The machine only spins. The rhythm belongs to the person. The industry has run this control method for over 30 years and nobody thought it needed changing — it was filed under "normal," not under "fault."
Our first cut was not mechanical. It was electrical.
The first cut: move "time" into the board.
A 2.1-inch smart rotary screen. You set the rounding time yourself, accurate to 1 second. Set it and press once: the seconds run on screen, the countdown drops, it brakes automatically at zero.
That small margin a veteran built up in the palm of his hand becomes a number. And a number can be copied — a new hire matches the veteran on day one.
The craft stays with the master. The time standard stays in the machine.
People have asked: why not keep mechanical timing? Cheaper, and the structure is familiar.
Because a mechanical part makes time out of gears, springs and contacts grinding against each other. It is accurate out of the factory. Two years in, maybe not — and the moment you need it accurate is exactly after a few hundred thousand cycles.
Digital timing does not wear: set 8 seconds today, press it three years later, it is still the number you set — accurate to 1 second.
That is our first reason for building this board: the more complex the machine, the simpler things get on the floor.
On how the board is actually built, our first principle is simple: start with whoever's hand will touch it.
The heavy current — 220V, 380V — runs on its own power layer and terminal blocks and never enters the control circuit. Every button, knob and emergency stop that gets pressed, twisted and slapped hundreds of times a day runs on low-voltage signals.
High voltage never touches the board. No live voltage on the panel — press it hundreds of times a day and you are never at risk.
Nor can the interference from switching heavy current crawl along the wiring into the control circuit and make the machine misfire or throw off its rhythm.
Second principle: design for the worst day, not for the lab.
The reality on a bakery floor is humidity, grease, flour dust, machine vibration, an unstable grid. This board has to travel with a cast-iron body for over ten years. So the question is not "will it power up" — it is "will it still be accurate after years on the job."
There is one more thing overseas customers ask about first: the grid.
110V–415V, same machine. Export to any country without rewiring, and no need to stock a separate version for each market — for a distributor, one less version is one less pile of inventory.
Then service. We designed this as a spec, not as something to patch after a breakdown.
The old logic is "repair it if you can." But on site, "repair" means one very real thing: there is no electronics engineer in the workshop, and measuring wire by wire and soldering it back is beyond most customers — they wait for an electrician. Time spent waiting for the electrician is time your line is down.
So we turned it around: do not design for "easy to repair." Design for "easy to replace."
The board reports its own faults, instead of waiting for you to notice the product is off.
If it truly fails, you swap the whole board — maintenance drops from skilled work to a simple action, and you are back in production in minutes. For a distributor, when a customer has a problem the cheapest move is to mail out a board and let the customer fit it: no electrician, no engineer flying in. After-sales goes from sending a technician to sending a parcel.
There is also a number attached to it: once the industrial interlock switch separates the main circuit from the standby circuit, standby on both BK-series models drops from 3.6–4.8 kWh to 1.5–3 kWh a day — up to about 825 kWh/year saved.
By this point the board has answered all of those pain points. What actually makes people hesitate is the next question.
Should the machine take over the "lift" as well?
That step is the only hard line between the Smart model and the Semi-Automatic model.
The hard line sits in exactly one place: who does the lift.
On BK-Smart the lift goes to the electric actuator: press once, the lift rises into position → rotating and rounding → countdown runs → automatic braking at zero → automatic reset → a tone. You press once, and the machine walks through every step in between.
On BK-Ultra, timed rounding is there, the screen is there, the control board is there — it keeps both manual and automatic operation; but the lift itself is still done by hand.
Why is this step hard? Because one more motion path means one more set of safety constraints: no hand near the moving mechanism. Every one of those constraints has to be written into the control logic on the board.
In other words: this is not adding a part to an old machine — it is re-sequencing how the machine moves.
| Item | BK-Smart | BK-Ultra |
|---|---|---|
| Dividing weight tolerance | 0~3g | 0~3g |
| Rounding time setting | Yes, 1-second accuracy | Yes, 1-second accuracy |
| Who does the lift | Electric actuator | Manual |
| One-touch fully automatic cycle | ✅ | ❌ |
| Minimum weight | 10 g | 20 g and up |
| Control board + 2.1-inch screen | Yes | Yes |
Model scope: BK-Smart is the Smart model; BK-Ultra is the high-spec Semi-Automatic model (smart timing and control board included, manual + automatic operation retained, lift done by hand). RM-Pro / RM-Basic are the semi-automatic pure-manual models: no timer, no screen, no control board, and outside the scope of this table.
With a 36-piece cutter disc, the Smart model goes down to 10 g; every other model starts at 20 g.
Final data is set by the actual quotation and contract. Contact our official customer service if anything is unclear.
Why build both? Because customers come in two kinds from the start.
One kind wants no hands involved at all: the machine guarantees the rhythm, and it does not matter who is on shift today.
The other kind wants the feel of pressing that lift by hand, but the timing has to be exact and the output has to be consistent.
So this is not one machine with a different configuration you can switch between — we built it as a different machine. That is why you will see two different machines from us.
Now for what we cannot change.
The board cannot solve problems with the dough itself. Water content, oil content and gluten strength differ, and whether a dough divides and rounds is something you only learn by testing. Our rule has always been: send us your recipe, test on site, ship when it works. Hard doughs like bagel — we have done it.
Electrical safety outside the machine is not something we can cover either: the incoming air switch and earth-leakage protection have to be matched to your local electrical code. However solid the board is, the front end is no place to cut corners.
So why did we build the extra Smart machine?
- Time: from judgment in your hands to a number you can copy (accurate to 1 second)
- Safety: high voltage never touches the board, no live voltage on the panel
- Universal: 110V–415V, one machine for grids worldwide
- Serviceable: the board reports its own faults, swap it and restart in minutes
- Automation: the lift goes to the electric actuator, you press once
Same mechanical structure, two control methods — the split is on the circuit board: how far it takes over the motion.
Message Robert on WhatsApp and we will send you a machine video.
If you are willing to send your recipe over, we will test it for you.
Scope statement: this article covers the Smart Dough Divider & Rounder (Vertical, model BK-Smart) and the Semi-Automatic Dough Divider & Rounder (Vertical). They are two independent models with different functions; the specs are not interchangeable and neither can substitute for the other. The built-in control board and 2.1-inch screen are standard on both BK-series models (BK-Smart / BK-Ultra) and absent from the pure-manual models. All figures above are based on our factory's standard test conditions; actual results depend on your dough and recipe in a live test.