Rated output is pieces per hour at one weight. Convert to kg/h, discount to 70% effective time, match the 15-35 g and 18-110 g ranges of the JGB-160 and JGB-210, and work through eight acceptance items.
Size the dumpling first, then the hourly rate
Jinan Shunxiang Central Kitchen Interconnection Technology is an equipment selection and process integration partner for central kitchens and food plants. In the dumpling and bun forming equipment category we configure machines for canteen groups, chain restaurants and frozen food factories running 30,000 pieces a day and above. This article covers one decision: how to calculate dumpling machine output, and what to check at acceptance.
The first line of most enquiries is "20,000 pieces an hour". Ask two questions and the number usually collapses: 25 g per piece, 30,000 pieces a day. A 10,000 pcs/h machine covers that. Buy the 20,000 unit and you pay twice the power, occupy a second station, and run the machine at half load for its whole service life.
Output is not a piece count. It is pieces multiplied by weight. At 25 g, 10,000 pieces is 250 kg/h; 20,000 pieces is 500 kg/h. Frozen food plants quote by the tonne, so piece counts mean little to them. Canteens plate by portion, where the weight decides how many dumplings go in a bowl. Change the weight on the same machine and output moves by a factor of two.
Rated output is not line output
The 0-10,000 pcs/h on the datasheet is continuous forming with an empty hopper and no interruptions. A real line loses time to filling changes, cleaning, dough reloading and stuck wrappers. At 70% effective time a 10,000 pcs/h machine delivers 7,000 pieces an hour; over an 8-hour shift with one hour for cleaning, that is 49,000 pieces. Two shifts take it close to 100,000.
Work backwards from the peak. A central kitchen at 30,000 pieces a day at 25 g concentrates output in the three hours before lunch service, so the peak is 10,000 pcs/h. One JGB-160 sits exactly on that number with no margin. If you want 30% headroom, take the JGB-210, or run two JGB-160 machines in parallel: the second option keeps half the line running during maintenance.
JGB-160 and JGB-210 side by side
| Item | JGB-160 | JGB-210 |
|---|---|---|
| Voltage | 220 V | 220/380 V |
| Power | 0.4 kW | 1.75 kW |
| Output | 0-10,000 pcs/h | 0-20,000 pcs/h |
| Weight per piece | 15-35 g | 18-110 g |
| Dimensions | 1650×580×1000 mm | 1760×760×1300 mm |
| Net weight | 140 kg | 330 kg |
Two differences matter. The weight range: the JGB-160 handles standard dumplings at 15-35 g, while the JGB-210 reaches 110 g for large filled products. The electrical load: 0.4 kW against 1.75 kW, a factor of 4.4. A 200-seat canteen can usually spare 0.4 kW on an existing 220 V circuit; 1.75 kW deserves a dedicated circuit.
Convert pieces into kilograms
| Model | Weight per piece | Rated pieces | Output by weight |
|---|---|---|---|
| JGB-160 | 15 g | 10,000 pcs/h | 150 kg/h |
| JGB-160 | 25 g | 10,000 pcs/h | 250 kg/h |
| JGB-160 | 35 g | 10,000 pcs/h | 350 kg/h |
| JGB-210 | 18 g | 20,000 pcs/h | 360 kg/h |
| JGB-210 | 50 g | 20,000 pcs/h | 1,000 kg/h |
| JGB-210 | 110 g | 20,000 pcs/h | 2,200 kg/h |
This is the table purchasing and the production manager should argue over. A contract that says "10,000 pieces an hour" has to be accepted at 25 g, which means 250 kg/h on the scale. Without a weight, the piece count is an empty number.
Weight tolerance you can measure on the floor
Write ±2% into the technical agreement, not ±1 g. At 25 g, ±2% is ±0.5 g, tighter than ±1 g; at 110 g, ±2% is ±2.2 g, looser. Take whichever is tighter and acceptance stops being an argument.
Weigh 30 consecutive pieces individually and record the mean and the range. Then run for 10 minutes and pull five pieces every two minutes to watch drift. As filling temperature rises and the wrapper softens, weight climbs. That drift matters more than single-piece error.
Filling and dough set the downtime
The machine rarely jams. The material does. Hold filling at a centre temperature below 12 °C so the fat stays solid and the mass holds together; that is what keeps forming stable. Dewater vegetable fillings first, because a wet filling softens the wrapper and the dumpling will not stand up on the tray.
Rest the dough for 20-30 minutes after mixing before it goes on the machine. The gluten relaxes and the sheet stops springing back. Wrapper thickness follows the product; thin-skin lines are more sensitive to roller gap, so re-set the gap and run 10 pieces before opening the throttle.
Hygiene: three places to look
Food-contact parts in 304 stainless steel are the entry line, and GB 4806.9-2016 sets the requirement for food-contact metallic materials. Second, check what comes apart: can the forming mould, conveyor belt and filling hopper be removed without tools? A machine that cannot be stripped is a machine the night shift only wipes. Third, check dead corners: dressed welds, no exposed bolts, sloped surfaces that drain. GB 14881-2013 clause 6.2 is explicit about equipment structure and cleanability, and GB 31654-2021 applies the same expectation to catering equipment.
Put cleaning time into the output calculation. A machine stripped in 40 minutes versus one that takes 90 costs 50 minutes a shift, which at 7,000 pcs/h is 5,800 pieces. That number belongs in the comparison sheet, not in the brochure.
Power, floor loading and footprint
The JGB-160 runs single-phase 220 V at 0.4 kW, under 2 A, so 2.5 mm² copper on a C16 breaker is enough. The JGB-210 comes in 220 V and 380 V versions; at 1.75 kW single-phase it draws about 8 A, still 2.5 mm² on a C16, while the three-phase version is wired per the nameplate. Give each machine its own circuit with 30 mA residual current protection.
The JGB-160 measures 1650×580×1000 mm and weighs 140 kg; the JGB-210 is 1760×760×1300 mm at 330 kg. At 330 kg on four feet a normal concrete slab is fine, but a raised floor needs checking. Leave 600 mm on both sides for the operator and 1.2 m at the discharge end for a receiving table. Do not push the machine into a corner.
Eight acceptance items
- Output: run one hour at the contracted weight, weigh the total and convert to pieces; 90% of rated output is the pass line.
- Weight: 30 consecutive pieces inside the agreed tolerance, range under 3 g.
- Forming: sample 200 pieces and count broken or leaking ones; above 2% means adjusting roller gap and filling dose.
- Electrical: measured running current against the nameplate, and one test trip of the residual current device.
- Material: 304 stainless on food-contact surfaces, no rust spots, no flaking coating.
- Strip-down: mould, belt and hopper removable by hand, and re-assembly without re-setting the knife.
- Cleaning: time the strip-down and record the actual downtime in the acceptance record.
- Documents: nameplate, certificate of conformity, wiring diagram, manual and spare parts list. Every missing item is retention money.
Four questions buyers ask
Q: For 30,000 pieces a day, one JGB-210 or two JGB-160 machines?
A: Look at the peak. If the three hours before lunch must deliver 10,000 pcs/h, two JGB-160 units are steadier because one keeps half the output running during a breakdown. If the product stays under 35 g, the larger machine buys nothing. Above 35 g, only the JGB-210 will do.
Q: How should the 15-35 g and 18-110 g ranges be read?
A: They are the adjustable range for one piece, not a promise that one machine covers everything. Moulds and filling dose can be changed inside the range; crossing into another range means another model. List your two or three standard products before signing and have the supplier run each one.
Q: Can a 0.4 kW machine really deliver 10,000 pieces an hour?
A: Yes, at 15-35 g with continuous feeding. Thick filling or a soft wrapper will pull the actual cycle time down. Accept the machine at your production weight, not against an empty test run.
Q: Can it make steamed dumplings, potstickers or wontons?
A: Different moulds and forming wheels produce different shapes, and steamed dumplings and potstickers belong to the same forming principle. Whether your recipe, wrapper thickness and filling dose run steadily has to be tested on the machine. Final specifications depend on the selected model, tooling and the supplier's technical documentation.
Closing
As of 2026 the specification envelope of this equipment class is stable: single-phase 220 V on the small model, dual voltage on the large one, 304 stainless on food-contact surfaces. What keeps moving is the product mix, with frozen dumplings trending toward smaller weights and canteen products toward heavier fillings. One machine rarely serves both ends. Fix the weight, the peak and the cleaning time before price and lead time, or the project comes back for rework.
Model data sits on the dumpling machine product page, related forming equipment under the dumpling machine category, and the rest of the range in the product directory. Send throughput, site conditions, power supply and your standard product sizes together and the quotation becomes comparable.