Grain Cracking Machine Operation Manual

Table of Contents

This machine is a Grain Cracking Machine, mainly used for cracking raw grains such as corn, wheat, and soybeans into uniform coarse particles.

Different from traditional grinding equipment, this machine adopts a roller structure and processes materials by extrusion. It does not produce a large amount of powder, effectively preserves the nutritional structure of raw materials, and improves the feed intake and digestion & absorption efficiency of animals.

With simple structure and stable operation, the machine is suitable for breeding farms, feed processing plants, small and medium-sized farms, etc. It is a key equipment commonly used in feed pretreatment.

Equipment Structure Display

First-Time Operation

Before use, refer to the equipment structure diagram to understand the position and function of each main component before performing the following operations.

Step 1. Connect Power or Start Power Unit

• Motor version: Connect the power correctly as required (recommended to be wired by a professional electrician), and confirm that the voltage/hertz/phase are consistent with the equipment parameters.
• Diesel engine version: Check fuel and engine oil, then start the engine according to specifications.

Step 2. No-Load Test Run

Start the machine and run it idle for 1–2 minutes. Observe whether it runs smoothly and whether there is abnormal noise or vibration.Stop immediately for inspection if any abnormality is found.

Step 3. Feeding Operation

After confirming normal operation, start feeding raw materials evenly:

• Control feeding speed
• Avoid excessive feeding at one time
• Maintain continuous and stable operation

Step 4. Shutdown Procedure

Shut down in the following sequence after use:

1. Stop feeding
2. Wait for materials to be completely discharged
3. Cut off power or turn off the engine

Discharge Particle Size Adjustment

The cracking effect of raw materials can be controlled by adjusting the gap between the rollers to achieve different discharge particle sizes.

Adjustment Method

Step 1:Stop the machine and cut off the power supply

Step 2:Rotate the adjusting screw with a wrench or adjusting handwheel

Step 3:Adjust the roller spacing as required:

• Increase spring compression (counterclockwise) → rollers move closer → finer discharge
• Decrease spring compression (clockwise) → roller spacing increases → coarser discharge

Step 4:Lock the fixing device after adjustment (if equipped)

Step 5:Start the machine and run a small amount of raw materials for test

Step 6:Observe the discharge effect and fine-tune further as needed

Equipment Maintenance

Regular maintenance is required to ensure normal operation and extend service life.

Roller Lubrication

Before first use, add lithium-based grease or lubricating oil to the oil injection holes on both sides of the rollers (four holes in total).Replenish lubrication timely according to usage after the machine runs for a period to ensure good lubrication of bearings.

Gear Lubrication

Keep the gear parts well lubricated. Apply gear oil evenly on the tooth surface with a brush.

Regular Inspection

Regularly inspect key parts of the equipment to ensure good operation:

• Check whether connecting bolts and fasteners are loose; tighten timely if loose
• Check the wear of the roller surface; repair or replace if necessary
• Check whether the transmission system (gears, bearings, etc.) runs smoothly without abnormal noise or vibration

Common Troubles and Causes