• AF4 Accumulator

    Kuhns AF4 Hay Accumulator for Small Hay Field Farm - Kuhns Manufacturing


    The AF4 accumulator arranges the bales on their strings, 4 wide and 1 long.

    • Our smallest accumulator.
    • Handles bales from 32″ to 48″ long
    • Bundle dimensions are 72″ wide and length can vary, depending on bale dimensions.
    • The AF4 4 bale accumulator is the solution for hay production around 6,000 bales or less per year.
    • Can handle 14×18″ and 16×18″ bales from 32″ to 48″ long at whatever density is needed, with no adjustments.
    • The two bale length allows for narrower wagons or for longer bales than the models that arrange the bales 3 long.
    • If your bales are 36″ long, you can cross stack the bales with the EGF8 grabber.
    • The low weight requirement for the grabber allows for the use of a small loader.

Works With

How the Accumulator Works:

The innovative design of the accumulator allows it to be fully automatic without the use of hydraulics or electronics. Using excess energy from the baler plunger, the bales are pushed up and out the top of the front chute. There is no extra pressure applied to the plunger and the chute does not deform the bales. As gravity moves the bales downward, the last bale in each row swings a gate to open the next row. The last bale in the grab opens the back gate. As the accumulator unloads itself, springs and counterweights automatically return all the gates back to their starting position, ready for the next bale.


The Kuhns Hay Accumulator is built from the ground up as a durable machine. The concept has logged thousands of hours in many different areas, terrains, and types of hay with exceptional customer satisfaction.

Set up your baler in 4 easy steps: bolt on the bale chamber extension, adjust the hitch to the correct position, trim the guide belt to the proper length, and loosen the pressure in the bale chamber to compensate for the back pressure caused by pushing the bales up the chute.

Features & Benefits


    Fully automated without the use of hydraulics, electronics, buttons, switches, sensors or chains.


    Short footprint allows for easy maneuvering in small fields.


    Sharp turns are no problem as the guide belt keeps bales properly aligned and moving up the chute.

Baler Efficiency Calculator

The Baler Efficiency Calculator has been preloaded with default values from an average hay operation. Change the numbers in Red to customize the calculator to your operation. This will demonstrate how changing from a pulled wagon to an Accumulator and Grabber System will increase the daily output of your baler.

BALING DETAILS(Replace with your operation averages)

Manually Loading Bales

Automated Accumulator & Grapple



Disclaimer: The Baler Efficiency Calculator is an estimation tool used to estimate an approximate gain in efficiency using an accumulator and grabber system versus a pulled bale wagon and does not factor turning at the end of the rows or changing twine, etcetera. The Baler Efficiency Calculator calculations are in no way a guarantee by Kuhns Mfg as to the output of our equipment or any accumulator and grabber system on your farm. Conditions on every farm are different and vary by the day. Please call us if you have any questions about the calculator or would like to work with us on calculations for your farm.