How Do Round Balers Work?

What Does a Round Baler Do?

A round baler is a hay baling system, or bundling system, that picks up hay from the ground and feeds it into a bale chamber. From there, the hay is then wrapped in layers with the help of 6 to 8 long rubber belts and becomes a rolled spherical shape, filling the bale chamber.

What Are the Benefits of Using a Round Baler?

Since John Deere introduced the industry’s first bale ejector - the 14T Baler - in 1957, haying has become a one-person operation. With built-in automation features, John Deere round balers reduce operator fatigue while delivering consistent bales that are achieved through communication between the tractor and the baler. By using a round baler, farmers will see bales that are less vulnerable to weather and are easy to unravel for feeding.

How Does a Round Baler Work?

Designed to improve hay pickup and overall baling speed, the capabilities of a round baler help operators achieve maximum productivity out in the field. This is achieved in a few key steps:

Step 1:

As the hay enters the forming chambers from the pickup, belts instantly turn to shape it into a tight, dense core.

Step 2:

Incoming hay is fed between the bale and the lower gate roll. It is then compressed into smooth, dense layers once entering the bale itself.

Step 3:

As the bale grows, the idler arm rises, forcing oil from the hydraulic cylinder through a pressure-relief valve to maintain consistent bale density throughout the shaping process.


The size of the tractor depends on the size of the baler. However, most standard balers require a tractor with around 35 horsepower and a minimum tractor weight of 3000 pounds.

For more information regarding John Deere round balers, contact your local John Deere dealer.

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