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Corn is harvested for grain, silage, and fresh market use. The corn combine machine is the main equipment for grain production because it threshes, cleans, and collects grain in a single pass. However, the self propelled maize harvester is also common for ear harvest and fresh corn. This article focuses on the corn combine machine, including its components, settings, and maintenance. It also explains when a self propelled maize harvester may be a better choice. Shijiazhuang Tianren Agricultural Machinery Equipment Co., Ltd provides harvesting equipment and parts for corn production.
A corn combine machine is a combine harvester with a corn header attached. The header has row units with gathering chains and snapping rolls. The rolls snap the ear from the stalk. The ear and some stalk material enter the combine. Inside, the threshing cylinder separates the kernels from the cob. The cleaning system removes chaff and cob pieces. Clean grain goes to the grain tank. The straw and cobs exit the rear and are chopped or windrowed.
The corn combine machine can also harvest other crops if the header and internal settings are changed. This makes it a versatile machine for farms that grow wheat, soybeans, and corn. However, the corn header and threshing settings must be correct for good results.
The table below lists the main components of a corn combine machine and their functions.
Component Function
Corn header Snaps ears from stalks and feeds them into the combine
Feeder house Moves crop to the threshing system
Threshing cylinder Separates kernels from cobs
Concave Works with cylinder to thresh grain
Cleaning fan Blows air to remove light chaff
Sieves Separate grain from cobs and debris
Grain tank Stores clean grain
Unloading auger Moves grain out of the tank
Straw chopper Cuts and spreads residue
Several settings affect grain quality and loss. Cylinder speed should be high enough to remove kernels but not so high that kernels crack. Concave clearance should be wider for corn than for wheat because the cob is larger. Fan speed should be moderate because corn chaff is heavier than wheat chaff. Sieve openings should be set for corn kernel size. Ground speed should match crop density and moisture. In dry corn, higher speed is possible. In wet corn, reduce speed to avoid plugging.
Moisture content at harvest should be between 15 and 20 percent for safe storage. Corn harvested above 20 percent needs drying. Corn below 15 percent may suffer kernel damage during threshing.
A self propelled maize harvester is often used for fresh market corn or ear harvest. It snaps and peels ears but may not thresh grain. A corn combine machine is used for dry grain. The table below shows the main differences.
Feature Corn Combine Machine Self Propelled Maize Harvester
Main output Grain Ears or grain
Threshing Yes Optional
Cleaning Yes Limited
Best moisture Dry grain Fresh or moderate moisture
Header Corn header Snapping and peeling header
Stalk use Chopped or windrowed Chopped
Field speed Higher Moderate
Use case Grain storage and sale Fresh market and ear storage
Farms that produce both fresh corn and grain corn may need both machines. A corn combine machine cannot produce fresh ears with husks because it threshes the grain.
Daily maintenance includes cleaning the header and threshing area. Check snapping rolls for wear and adjust clearance if needed. Grease all bearings and chains. Inspect the concave and cylinder for damage. Check the cleaning fan and sieves for blockages. Replace worn header knives and chains. Keep the machine shedded when not in use. Follow the manual for oil and filter changes.
Q1 What is a corn combine machine used for?
A1 It is used to harvest corn grain. It snaps ears, threshes kernels, and cleans grain in one pass.
Q2 What is the difference between a corn combine machine and a self propelled maize harvester?
A2 A corn combine machine produces grain. A self propelled maize harvester often produces whole ears and may peel them. Some models can also shell grain.
Q3 Can I use a corn combine machine for fresh corn?
A3 No. Fresh corn for market needs ears with husks. A corn combine machine threshes the grain and damages the ear.
Q4 How do I set the combine for corn?
A4 Increase cylinder speed, widen concave clearance, set fan speed to moderate, and adjust sieve openings for corn kernel size.
Q5 What moisture is best for corn harvest?
A5 Grain corn should be harvested at 15 to 20 percent moisture. Higher moisture needs drying.
Q6 Where can I find parts for a corn combine machine?
A6 Shijiazhuang Tianren Agricultural Machinery Equipment Co., Ltd supplies corn headers, knives, chains, and other harvesting parts.
The corn combine machine is the main equipment for grain corn production. It offers high capacity and good grain quality when set correctly. The self propelled maize harvester is a useful alternative for ear harvest and fresh market corn. By matching the machine to the crop and maintaining it properly, farmers can reduce loss and improve efficiency. Shijiazhuang Tianren Agricultural Machinery Equipment Co., Ltd provides reliable equipment and support for both harvest methods.