Tub Grinders

Post Equipment in Rock Valley, Iowa, sells new and used tub grinders. Mighty Giant by Jones Manufacturing and Haybuster is our new equipment dealer brands for wood and hay grinders.

To discuss a sale or purchase, please contact us online or phone 712-476-4500.

Call for PriceMighty Giant 1015 Tub Grinder3706Mighty GiantNA

***NEW*** 1015 Tub Grinder by Jones Manufacturing, Plus 1 controller, Remote, SN: 1015-21-0008

Call for PriceMighty Giant Commercial Power Unit 3500 Series3800Mighty GiantNA

***NEW*** 27′ long elevator, swings side to side and up and down, hydraulic opening tub for easy access to screens & hammers, multi-function remote control system including throttle up/down, can choose Caterpillar or Cummins engines up to 800HP, chain driven tub with variable speed and reverse, hammers are reversible and have 4 hard surfaced corners, 14″ high capacity discharge auger, Industrial radiator, heavy duty air filter system with pre-cleaner.  Call today for more information on these top quality commercial grinders!

$61,000Haybuster 1130 Tub Grinder4103HaybusterNA

2018 model, local trade, has the new style hammers, comes with 7 inch screen, folding conveyor, 16.5L – 16.1SL flotation tires, conveyor has rubber boot on the end, large 1000 cv pto, SN: 1118 0913 30. Nice unit!

Mighty Giant 2015 Tub Grinder
Call for PriceMighty Giant 2015 Tub Grinder3713Mighty Giant2015NA

***NEW*** PTO driven, tandem 10,000 lb axles, remote control for operation, 2′ x 25′ conveyor, 26″ x 48″ mill with 5″ shaft.  Capable of grinding any type of forage or grain. Hydraulically raise, lower, side to side, and fold the discharge elevator.  Hydraulic tub tilt for easy access to the mill, hammers, and screens, upgraded 1/2″ mill disk/hammers, SN: 2015-21-1092


Additional Information

Tub Grinders

Post Equipment in Rock Valley, Iowa, sells new and used tub grinders such as Mighty Giant and Haybuster.

What are tub grinders?

Tub grinders use a series of rotors, knives, or hammers to process and chop up both round and square bales or in some cases wood. After the tub grinder processes the desired materials, it shoots it up a discharge elevator which can be raised, lowered, swung or folded to your desire hydraulically. These processed bales can be used for either feeding or bedding cattle. Tub grinders are beneficial to cattle owners because they reduce labor, cows consume more and waste less hay, cornstalks, or other material that is being processed. Because of its discharge elevator to distribute the processed product into pens, bunks, or other areas for feeding or bedding, gives cattle equal feeding room while the processing blows away dust and mold from the final product. Tub grinders come in a range of horsepower requirements and are also known as hay grinders and/or wood grinders.

Tub Grinders from Post Equipment

At Post Equipment, we check the status of the working condition of each tub grinder and are upfront to our customers about their conditions. We even list all the details of our tub grinders, along with their prices, here on our website. All tub grinders are available to look at in-person at our Rock Valley location.

Popular Tub Grinder Brands & Models

The most popular tub grinder we carry is Mighty Giant by Jones Manufacturing and Haybuster.

Mighty Giant

Mighty Giant tub grinders made by Jones Manufacturing has a consistent grind with a large capacity.

Mighty Giant has a video about their hay grinders.

Mighty Giant also has a video about their wood grinders.

Popular Mighty Giant Models

The following models are popular at Post Equipment in Mighty Giant hay grinders: 1015, 2000, 2015, 2300, 3500, 4000, 5000.
The following models are popular at Post Equipment in Mighty Giant grinders: 2100 PTO drive, 3100 power drive, 4100 power unit, and 5100 hydrafork.

You can check out more details on these tub grinders for hay or wood on Mighty Giant’s website here.


Haybuster’s Big Bite Line of tub grinders provide solutions for grinding hay, crop residues, grain, and commercial grinding applications.

Popular Haybuster Models

The following are popular at Post Equipment in Haybuster grinders: 1150, 1150GL, 1155 1155GL, H-1000, H-1030, H-1130, H-1130E.

You can check out more details on these tub grinders for hay or wood on Haybuster’s website here.

Contact Post Equipment online or by phone 712-476-4500 to ask about any machines you see above.