Line Can’t Keep Up? 6 Places Throughput Disappears in a Vegetable Plant
Your line is rated for one number and averages less. Measure from last good product to first good product, and the gap is often one slow station, the cleanout or a part that keeps failing, not the whole line.
Bigtem USA engineering guide · updated October 2026
By Dan Ghadiri, Bigtem USA
- The bottleneck is the station with the lowest real average lb/h, not the lowest nameplate.
- Count cleanouts and restarts: measure from last good product to first good product.
- Fix the slowest station first; adding capacity anywhere else does not raise line output.
Find the real bottleneck
Pick one full shift. At each station, record pounds in and pounds out per hour, plus every stop and its cause. The station with the lowest real average is where the line loses output. A machine rated well above the target can still be the bottleneck if it stops often or restarts slowly.
6 places throughput disappears
The peeler is the slowest station
A new or bigger line often outgrows one peeler first. Compare the peeler’s real average with the station after it.The roaster or blancher sets the pace
Residence time fixes how much product a roaster or blancher can hold. If the target goes up, the chamber, belt speed or number of tunnels has to follow.Uneven feeding
Surges and gaps from the hopper make every machine run below rating. A metering hopper and belt give each station a steady flow.Cleanout and restart
The line stops for cleaning and takes too long to come back. See sanitation downtime and hygienic design.The part that keeps failing
Belts that bend, drives that fail and knives that dull stop the line. Keep wear parts on site and use options such as the dual-head hydrocutter that switches knife sets without stopping.End of line can’t keep up
When case packing or palletizing falls behind, upstream machines stop. Bigtem lays out the conveyors and end of line so a partner’s robot cell can be integrated.
Published capacities by station
| Station | Published capacity |
|---|---|
| Abrasive roller peeler | Up to about 11,000 lb/h (5 t/h) max; recommended up to about 4,400 lb/h (2 t/h); above that we recommend steam |
| DORUK steam peeler | About 3,300 to 61,700 lb/h (1.5 to 28 t/h) of potatoes, six models |
| Gentle steam peeler | Peaches about 6,600 to 25,400 lb/h (3 to 11.5 t/h) at 8 bar |
| Dry airblast garlic peeling | About 550 lb/h per peeler (variety-dependent); standard lines 1 or 2 t/h (about 2,200 or 4,400 lb/h), expandable |
| Roasting tunnels | About 2,200 to 44,000 lb/h (1 to 20 t/h), VFD-adjustable; tunnels in parallel for higher targets |
| Blanchers | From a batch blancher at about 500 lb/h up to about 44,000 lb/h (20 t/h) blanching and cooling lines |
| Hydrocutter | Up to about 44,000 lb/h (20 t/h) input; dual head switches knife sets without stopping the line |
| Tomato reception line | Up to about 220,000 lb/h (100 t/h) |
Approximate figures from Bigtem specifications on each product page. Actual rates depend on crop, variety, size and condition.
Plant checklist
- Target lb/h for the line, and real average lb/h at each station
- Stops per shift by station and cause
- Cleanout time from last good product to first good product
- Feeding: steady flow or surges from the hopper
- Wear parts and a spare belt on site
- End of line: does packing or palletizing ever stop the line?
Send us a photo of your slowest station and your target lb/h, and we’ll tell you where the time goes.
Production bottleneck: FAQ
How do I find the bottleneck on my peel line?
Log actual lb/h at each station for a full shift, including stops. The station with the lowest real average, not the lowest nameplate rating, is the bottleneck. Measure from last good product to first good product so cleanouts and restarts are counted.
How do I increase peeling capacity?
First confirm the peeler is the slowest station. Then either add a peeler in parallel or move to a larger or different method. DORUK steam peelers cover about 3,300 to 61,700 lb/h (1.5 to 28 t/h) of potatoes across six models.
How many lb per hour can a potato peeler do?
An abrasive roller peeler runs up to about 11,000 lb/h (5 t/h) max and is recommended up to about 4,400 lb/h (2 t/h); above that, we recommend steam peeling for better yield. DORUK steam peelers run about 3,300 to 61,700 lb/h (1.5 to 28 t/h).
When is an abrasive peeler enough and when do I need steam?
Abrasive fits up to about 4,400 lb/h (2 t/h) recommended, with a maximum of about 11,000 lb/h (5 t/h). Above that, steam usually gives better yield. See steam vs abrasive peeling.
What pepper roaster capacity is available?
Bigtem roasters run from about 2,200 to 44,000 lb/h (1 to 20 t/h). Every roaster has a VFD, so capacity is adjustable, and tunnels can run in parallel for higher targets. See roasting and grill marking.
What blancher throughput can Bigtem supply?
From a batch blancher at about 500 lb/h up to blanching and cooling lines of about 44,000 lb/h (20 t/h), sized to line flow and residence time. See blanchers.
Can end-of-line palletizing be the bottleneck?
Yes. When stacking falls behind, upstream machines stop. Bigtem lays out the conveyors and end of line so a partner’s robot palletizing cell can be integrated. See packaging and palletizing.
Related: Peeling systems · DORUK steam peeler · Abrasive peeler · Roasting · Blanchers · Washers · Packaging & palletizing · Sanitation downtime
Send us your slowest station
A photo of the station and your target lb/h is enough to start. We’ll tell you where the time goes.