If you are evaluating a cracking mill for corn processing, one practical question comes first:

What does the cracked corn actually look like under different cracking conditions?

This page presents a real corn cracking trial carried out on a C25125G Cracking Mill at Bellaex’s factory in Dalian, China, on March 10, 2026.

The trial was designed as a short-duration test to compare visible cracking results under different machine settings. It included both double-pair operation, where the material passes through both roll pairs, and single-pair operation, where one roll pair is used.

The purpose here is simple: to show the recorded trial conditions alongside the actual corn samples, so you can see how the output differed during this specific test.

Caption: C25125G Cracking Mill during the corn cracking trial at Bellaex’s factory in Dalian, China.

Trial Record

A roll gap is the working clearance between two opposing rolls. Changing this clearance changes how the material passes through the cracking zone.

This was a short-duration trial focused on visible output comparison, so you should read the samples as practical trial references rather than continuous-production performance data.

Caption: Corn was briefly fed through the machine and output samples were collected under different trial conditions.

Double-Pair Evidence

The double-pair portion of the trial provides the clearest setting-based comparison.

Setting A — Upper 3.5 mm / Lower 2.75 mm

For the first recorded condition, the upper roll gap was set to 3.5 mm and the lower roll gap to 2.75 mm.

The collected corn provides a visual reference for a relatively coarser cracked output under this trial condition.

Caption: Double-pair corn output collected with the upper roll gap at 3.5 mm and the lower roll gap at 2.75 mm.

Setting B — Upper 0.5 mm / Lower 0.2 mm

For the second recorded condition, the roll gaps were reduced to 0.5 mm on the upper pair and 0.2 mm on the lower pair.

The collected sample shows a more intensively cracked output compared with the first recorded condition.

Caption: Double-pair corn output collected with the upper roll gap at 0.5 mm and the lower roll gap at 0.2 mm.

The two samples let you compare two documented double-pair settings side by side and see how the observed output differed during this specific corn trial.

They should not, however, be treated as universal target settings. Actual cracking results can depend on the material and operating requirements of the individual project.

Caption: Roll-gap adjustment during the C25125G corn cracking trial.

The trial also included single-pair operation.

During this part of the test, the machine was switched so that the corn was processed through one roll pair. Additional samples were then collected under different adjustment conditions.

The available trial record does not provide complete numerical roll-gap values for these single-pair samples. For that reason, the results below are presented as visual references rather than a numerical setting comparison.

Single-Pair Reference A

The first confirmed sample shows the relatively finer single-pair cracked-corn result recorded during the trial.

Caption: Single-pair reference showing the relatively finer cracked-corn output recorded during the trial.

Single-Pair Reference B

After further adjustment, another sample was collected to show a visibly coarser cracked-corn result.

Caption: Single-pair reference showing a visibly coarser cracked-corn output after further adjustment.

These samples help you compare the visible results recorded during the single-pair portion of the trial without assigning unrecorded numerical settings to them.

Caption: The machine was switched into single-pair working mode during the trial.

What This Trial Can and Cannot Show

The strength of this trial is that it provides real operating evidence and real corn samples under recorded conditions.

What this trial can show

• A C25125G Cracking Mill was tested with corn.

• Both double-pair and single-pair operating modes were used.

• Two specific double-pair roll-gap settings were recorded.

• Different visible cracking results were collected during the trial.

• Photos and video were recorded during the test process.

• The samples provide practical references for discussing different target cracking results.

The images on this page should therefore be used as trial references, not as guaranteed output specifications.

If your project requires a defined particle-size range, tight fines control or another specific output requirement, the result should be evaluated against your own material and process conditions.

What Does This Mean for Your Project?

The most useful question is not whether corn can be cracked.

It is:

What cracking result does your process actually need?

A suitable setup depends on factors such as your corn condition, required capacity, target output and what happens to the material after cracking.

For example, you may need relatively coarse cracked pieces for one process, while another application may require further size reduction before the next processing stage.

The settings shown in this trial are therefore useful as comparison references, but your final cracking setup should match the requirements of your own material and downstream process. 

Discuss Your Cracking Requirement

If you already have a target cracking result in mind, share your corn condition, required capacity, target output reference and downstream process with Bellaex.

We can use that information to discuss the cracking requirement and determine whether further technical evaluation is needed.

Discuss Your Cracking Requirement

View the C-Series Cracking Mill